removed now indicator from android and ios widgets

Reviewed-on: #99

android/app/src/main/AndroidManifest.xml

@@ -2,7 +2,9 @@
     <application
         android:label="Marianum Fulda"
         android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
+        android:icon="@mipmap/ic_launcher"
+        android:fullBackupContent="@xml/backup_rules"
+        android:dataExtractionRules="@xml/data_extraction_rules">
         <activity
             android:name=".MainActivity"
             android:exported="true"
@@ -23,23 +25,85 @@
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="image/*" />
+                <data android:mimeType="video/*" />
+                <data android:mimeType="application/*" />
+                <data android:mimeType="text/*" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND_MULTIPLE" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="image/*" />
+                <data android:mimeType="video/*" />
+                <data android:mimeType="application/*" />
+            </intent-filter>
         </activity>
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
-    </application>
-    <!-- Required to query activities that can process text, see:
-         https://developer.android.com/training/package-visibility?hl=en and
-         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
 
-         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+        <!-- Receiver classes live at the package root (NOT under .widgets) because
+             the home_widget Flutter plugin resolves them as <app-package>.<name>. -->
+        <receiver
+            android:name="eu.mhsl.marianum.mobile.client.TimetableDayWidget"
+            android:label="@string/widget_day_label"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/timetable_day_widget_info" />
+        </receiver>
+
+        <receiver
+            android:name="eu.mhsl.marianum.mobile.client.TimetableWeekWidget"
+            android:label="@string/widget_week_label"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/timetable_week_widget_info" />
+        </receiver>
+    </application>
+    <!-- Required so url_launcher / can_launch can actually see browsers,
+         mail clients and dialers under Android 11+ package-visibility rules
+         (otherwise UrlLauncher logs "component name for ... is null" and
+         link taps in Talk silently do nothing). The PROCESS_TEXT intent is
+         needed by io.flutter.plugin.text.ProcessTextPlugin (selection
+         menu).
+         See https://developer.android.com/training/package-visibility -->
     <queries>
         <intent>
             <action android:name="android.intent.action.PROCESS_TEXT"/>
             <data android:mimeType="text/plain"/>
         </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW"/>
+            <data android:scheme="https"/>
+        </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW"/>
+            <data android:scheme="http"/>
+        </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW"/>
+            <data android:scheme="mailto"/>
+        </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW"/>
+            <data android:scheme="tel"/>
+        </intent>
     </queries>
     <uses-permission android:name="android.permission.INTERNET"/>
+    <!-- Workmanager periodic widget refresh needs to reschedule after device
+         reboot, otherwise the widget freezes until the user opens the app. -->
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
 </manifest>

android/app/src/main/kotlin/eu/mhsl/marianum/mobile/client/MainActivity.kt

@@ -1,5 +1,42 @@
 package eu.mhsl.marianum.mobile.client
 
+import android.content.Intent
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity() {
+    private val widgetChannel = "eu.mhsl.marianum.widget"
+    /// Last seen widget tap target. Cleared by Dart via `consumePendingNavigation`
+    /// so the same intent isn't replayed on every resume.
+    private var pendingTimetableTap: Boolean = false
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+        MethodChannel(
+            flutterEngine.dartExecutor.binaryMessenger,
+            widgetChannel
+        ).setMethodCallHandler { call, result ->
+            when (call.method) {
+                "consumePendingNavigation" -> {
+                    val pending = pendingTimetableTap
+                    pendingTimetableTap = false
+                    result.success(pending)
+                }
+                else -> result.notImplemented()
+            }
+        }
+        consumeIntentData(intent)
+    }
+
+    override fun onNewIntent(intent: Intent) {
+        super.onNewIntent(intent)
+        consumeIntentData(intent)
+    }
+
+    private fun consumeIntentData(intent: Intent?) {
+        if (intent?.getBooleanExtra("widget_open_timetable", false) == true) {
+            pendingTimetableTap = true
+        }
+    }
+}

android/app/src/main/kotlin/eu/mhsl/marianum/mobile/client/TimetableDayWidget.kt

@@ -0,0 +1,37 @@
+package eu.mhsl.marianum.mobile.client
+
+import android.appwidget.AppWidgetManager
+import android.appwidget.AppWidgetProvider
+import android.content.Context
+import android.os.Bundle
+import eu.mhsl.marianum.mobile.client.widgets.WidgetRenderer
+
+/**
+ * Lives at the package root (not under `widgets/`) because the home_widget
+ * Flutter plugin resolves the receiver class as `<app-package>.<androidName>`.
+ */
+class TimetableDayWidget : AppWidgetProvider() {
+    override fun onUpdate(
+        context: Context,
+        appWidgetManager: AppWidgetManager,
+        appWidgetIds: IntArray,
+    ) {
+        for (id in appWidgetIds) {
+            val options = appWidgetManager.getAppWidgetOptions(id)
+            val views = WidgetRenderer.buildDay(context, context.packageName, options)
+            appWidgetManager.updateAppWidget(id, views)
+        }
+    }
+
+    override fun onAppWidgetOptionsChanged(
+        context: Context,
+        appWidgetManager: AppWidgetManager,
+        appWidgetId: Int,
+        newOptions: Bundle,
+    ) {
+        // Re-render on resize, otherwise the tiles stay at install-time size
+        // and either clip or leave dead space.
+        val views = WidgetRenderer.buildDay(context, context.packageName, newOptions)
+        appWidgetManager.updateAppWidget(appWidgetId, views)
+    }
+}

android/app/src/main/kotlin/eu/mhsl/marianum/mobile/client/TimetableWeekWidget.kt

@@ -0,0 +1,31 @@
+package eu.mhsl.marianum.mobile.client
+
+import android.appwidget.AppWidgetManager
+import android.appwidget.AppWidgetProvider
+import android.content.Context
+import android.os.Bundle
+import eu.mhsl.marianum.mobile.client.widgets.WidgetRenderer
+
+class TimetableWeekWidget : AppWidgetProvider() {
+    override fun onUpdate(
+        context: Context,
+        appWidgetManager: AppWidgetManager,
+        appWidgetIds: IntArray,
+    ) {
+        for (id in appWidgetIds) {
+            val options = appWidgetManager.getAppWidgetOptions(id)
+            val views = WidgetRenderer.buildWeek(context, context.packageName, options)
+            appWidgetManager.updateAppWidget(id, views)
+        }
+    }
+
+    override fun onAppWidgetOptionsChanged(
+        context: Context,
+        appWidgetManager: AppWidgetManager,
+        appWidgetId: Int,
+        newOptions: Bundle,
+    ) {
+        val views = WidgetRenderer.buildWeek(context, context.packageName, newOptions)
+        appWidgetManager.updateAppWidget(appWidgetId, views)
+    }
+}

android/app/src/main/kotlin/eu/mhsl/marianum/mobile/client/widgets/WidgetData.kt

@@ -0,0 +1,157 @@
+package eu.mhsl.marianum.mobile.client.widgets
+
+import org.json.JSONException
+import org.json.JSONObject
+import java.text.SimpleDateFormat
+import java.util.Calendar
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+// Mirror of lib/widget_data/widget_data.dart — JSON keys + enum names
+// must stay in sync.
+enum class WidgetLessonStatus {
+    REGULAR, ONGOING, PAST, CANCELLED, IRREGULAR, TEACHER_CHANGED, EVENT;
+
+    companion object {
+        fun fromWire(raw: String?): WidgetLessonStatus = when (raw) {
+            "regular" -> REGULAR
+            "ongoing" -> ONGOING
+            "past" -> PAST
+            "cancelled" -> CANCELLED
+            "irregular" -> IRREGULAR
+            "teacherChanged" -> TEACHER_CHANGED
+            "event" -> EVENT
+            else -> REGULAR
+        }
+    }
+}
+
+data class WidgetLesson(
+    val start: Date,
+    val end: Date,
+    val subjectShort: String,
+    val subjectLong: String?,
+    val room: String?,
+    val teacher: String?,
+    val originalTeacher: String?,
+    val status: WidgetLessonStatus,
+    val customColor: String?,
+    val siblingCount: Int,
+)
+
+data class WidgetPeriod(
+    val name: String,
+    val startMinutes: Int,
+    val endMinutes: Int,
+    val virtualStartMinutes: Int,
+    val virtualEndMinutes: Int,
+)
+
+data class WidgetTimetableData(
+    val fetchedAt: Date,
+    val anchorDate: Date,
+    val lessons: List<WidgetLesson>,
+    val periods: List<WidgetPeriod>,
+    val isHoliday: Boolean,
+    val holidayName: String?,
+)
+
+object WidgetDataParser {
+    private val isoFormat: SimpleDateFormat
+        get() = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.ROOT).apply {
+            timeZone = TimeZone.getDefault()
+        }
+
+    /// Dart's toIso8601String() ships microseconds (6 digits) when non-zero;
+    /// SimpleDateFormat only parses 3 → strip the extra digits. Local time
+    /// without Z is the default, so removeSuffix("Z") makes the parser
+    /// tolerate both shapes.
+    private fun parseDate(raw: String?): Date? {
+        if (raw.isNullOrEmpty()) return null
+        val cleaned = raw
+            .replace(Regex("([.,]\\d{3})\\d+"), "$1")
+            .removeSuffix("Z")
+        return try {
+            isoFormat.parse(cleaned)
+        } catch (_: Exception) {
+            null
+        }
+    }
+
+    fun parse(json: String?): WidgetTimetableData? {
+        if (json.isNullOrEmpty()) return null
+        return try {
+            val root = JSONObject(json)
+            val lessonsArray = root.optJSONArray("lessons")
+            val lessons = mutableListOf<WidgetLesson>()
+            if (lessonsArray != null) {
+                for (i in 0 until lessonsArray.length()) {
+                    val obj = lessonsArray.optJSONObject(i) ?: continue
+                    val start = parseDate(obj.stringOrNull("start")) ?: continue
+                    val end = parseDate(obj.stringOrNull("end")) ?: continue
+                    lessons += WidgetLesson(
+                        start = start,
+                        end = end,
+                        subjectShort = obj.stringOrNull("subjectShort") ?: "",
+                        subjectLong = obj.stringOrNull("subjectLong"),
+                        room = obj.stringOrNull("room"),
+                        teacher = obj.stringOrNull("teacher"),
+                        originalTeacher = obj.stringOrNull("originalTeacher"),
+                        status = WidgetLessonStatus.fromWire(obj.stringOrNull("status")),
+                        customColor = obj.stringOrNull("customColor"),
+                        siblingCount = obj.optInt("siblingCount", 0),
+                    )
+                }
+            }
+            val periodsArray = root.optJSONArray("periods")
+            val periods = mutableListOf<WidgetPeriod>()
+            if (periodsArray != null) {
+                for (i in 0 until periodsArray.length()) {
+                    val obj = periodsArray.optJSONObject(i) ?: continue
+                    periods += WidgetPeriod(
+                        name = obj.stringOrNull("name") ?: "",
+                        startMinutes = obj.optInt("startMinutes", 0),
+                        endMinutes = obj.optInt("endMinutes", 0),
+                        virtualStartMinutes = obj.optInt("virtualStartMinutes", 0),
+                        virtualEndMinutes = obj.optInt("virtualEndMinutes", 0),
+                    )
+                }
+            }
+            WidgetTimetableData(
+                fetchedAt = parseDate(root.stringOrNull("fetchedAt")) ?: Date(),
+                anchorDate = parseDate(root.stringOrNull("anchorDate")) ?: Date(),
+                lessons = lessons,
+                periods = periods,
+                isHoliday = root.optBoolean("isHoliday", false),
+                holidayName = root.stringOrNull("holidayName"),
+            )
+        } catch (_: JSONException) {
+            null
+        }
+    }
+
+    private fun JSONObject.stringOrNull(key: String): String? {
+        if (!has(key) || isNull(key)) return null
+        val raw = optString(key, "")
+        return if (raw.isEmpty()) null else raw
+    }
+}
+
+object WidgetDateUtils {
+    fun startOfDay(date: Date): Date {
+        val cal = Calendar.getInstance().apply { time = date }
+        cal.set(Calendar.HOUR_OF_DAY, 0)
+        cal.set(Calendar.MINUTE, 0)
+        cal.set(Calendar.SECOND, 0)
+        cal.set(Calendar.MILLISECOND, 0)
+        return cal.time
+    }
+
+    fun isSameDay(a: Date, b: Date): Boolean {
+        val ca = Calendar.getInstance().apply { time = a }
+        val cb = Calendar.getInstance().apply { time = b }
+        return ca.get(Calendar.YEAR) == cb.get(Calendar.YEAR) &&
+            ca.get(Calendar.DAY_OF_YEAR) == cb.get(Calendar.DAY_OF_YEAR)
+    }
+}

android/app/src/main/kotlin/eu/mhsl/marianum/mobile/client/widgets/WidgetRenderer.kt

@@ -0,0 +1,740 @@
+package eu.mhsl.marianum.mobile.client.widgets
+
+import android.app.PendingIntent
+import android.appwidget.AppWidgetManager
+import android.content.Context
+import android.content.Intent
+import android.content.SharedPreferences
+import android.content.res.Configuration
+import android.os.Bundle
+import android.util.TypedValue
+import android.view.View
+import android.widget.RemoteViews
+import eu.mhsl.marianum.mobile.client.MainActivity
+import eu.mhsl.marianum.mobile.client.R
+import java.text.SimpleDateFormat
+import java.util.Calendar
+import java.util.Date
+import java.util.Locale
+import kotlin.math.max
+
+/**
+ * Renders the day and week widgets as a time-grid: lesson blocks absolutely
+ * positioned on a vertical axis, mirroring the in-app Syncfusion calendar.
+ * Per-hour dp is computed from the widget bundle so the grid scales with
+ * resize, clamped to [MIN_HOUR_HEIGHT_DP, MAX_HOUR_HEIGHT_DP].
+ */
+object WidgetRenderer {
+    private const val FALLBACK_VIRTUAL_MINUTES = 11 * 60
+
+    private const val DAY_CHROME_DP = 40
+    private const val WEEK_CHROME_DP = 64
+
+    private const val MIN_HOUR_HEIGHT_DP = 18
+    private const val MAX_HOUR_HEIGHT_DP = 72
+
+    private const val MIN_BLOCK_HEIGHT_DP = 16
+    private const val LESSON_GAP_DP = 1.5f
+
+    // Below SHOW_ROOM_MIN: subject only. Below SHOW_TEACHER_SEPARATE_MIN:
+    // subject + room. Above: subject + room + teacher stacked.
+    private const val BLOCK_SHOW_ROOM_MIN_DP = 18
+    private const val BLOCK_SHOW_TEACHER_SEPARATE_MIN_DP = 30
+
+    /// Below this column width autoSize can't fit subject + room — drop
+    /// room/teacher entirely on the week-widget.
+    private const val WEEK_COLUMN_TIGHT_DP = 45
+
+    private val timeFormat = SimpleDateFormat("HH:mm", Locale.GERMAN)
+    private val dateShort = SimpleDateFormat("dd.MM.", Locale.GERMAN)
+    private val weekdayShort = SimpleDateFormat("EE", Locale.GERMAN)
+    private val dateTimeShort = SimpleDateFormat("dd.MM. HH:mm", Locale.GERMAN)
+
+    /// Hex values mirror LightAppTheme / DarkAppTheme tokens so the widget
+    /// matches the app's branding rather than the generic system look.
+    private data class WidgetPalette(
+        val background: Int,
+        val textPrimary: Int,
+        val textSecondary: Int,
+        val divider: Int,
+        val breakBlock: Int,
+        val watermarkAlpha: Float,
+    )
+
+    private val lightPalette = WidgetPalette(
+        background = 0xFFFCF7F5.toInt(),
+        textPrimary = 0xFF1A1A1A.toInt(),
+        textSecondary = 0xFF555555.toInt(),
+        divider = 0x22000000,
+        breakBlock = 0x0C000000,
+        watermarkAlpha = 0.014f,
+    )
+
+    private val darkPalette = WidgetPalette(
+        background = 0xFF1F1716.toInt(),
+        textPrimary = 0xFFF1F1F1.toInt(),
+        textSecondary = 0xFFB0B0B0.toInt(),
+        divider = 0x33FFFFFF,
+        breakBlock = 0x14FFFFFF,
+        watermarkAlpha = 0.025f,
+    )
+
+    private fun resolvePalette(context: Context, themeMode: String?): WidgetPalette {
+        val isDark = when (themeMode) {
+            "light" -> false
+            "dark" -> true
+            else -> {
+                val uiMode = context.resources.configuration.uiMode and
+                    Configuration.UI_MODE_NIGHT_MASK
+                uiMode == Configuration.UI_MODE_NIGHT_YES
+            }
+        }
+        return if (isDark) darkPalette else lightPalette
+    }
+
+    fun buildDay(
+        context: Context,
+        packageName: String,
+        options: Bundle? = null,
+    ): RemoteViews {
+        val prefs = sharedPrefs(context)
+        val palette = resolvePalette(context, prefs.getString(KEY_THEME_MODE, "system"))
+        if (!prefs.getBoolean(KEY_LOGGED_IN, false)) {
+            return buildPlaceholder(
+                context,
+                packageName,
+                context.getString(R.string.widget_login_required),
+                palette,
+            )
+        }
+        val data = WidgetDataParser.parse(prefs.getString(KEY_DAY_DATA, null))
+            ?: return buildPlaceholder(
+                context,
+                packageName,
+                context.getString(R.string.widget_loading),
+                palette,
+            )
+
+        val totalVirtualMin = data.periods.lastOrNull()?.virtualEndMinutes
+            ?: FALLBACK_VIRTUAL_MINUTES
+        val hourHeightDp = resolveHourHeight(options, DAY_CHROME_DP, totalVirtualMin)
+
+        val views = RemoteViews(packageName, R.layout.widget_day)
+        applyChrome(views, palette, options)
+        views.setTextColor(R.id.widget_day_title, palette.textPrimary)
+        views.setTextColor(R.id.widget_day_subtitle, palette.textSecondary)
+        views.setTextColor(R.id.widget_day_empty, palette.textSecondary)
+        views.setTextViewText(
+            R.id.widget_day_title,
+            "${dayLabel(context, data.anchorDate)} · ${dateShort.format(data.anchorDate)}",
+        )
+        views.setTextViewText(
+            R.id.widget_day_subtitle,
+            context.getString(R.string.widget_status_label, freshnessLabel(context, data.fetchedAt)),
+        )
+
+        views.removeAllViews(R.id.widget_day_time_labels)
+        views.removeAllViews(R.id.widget_day_grid)
+
+        if (data.isHoliday) {
+            views.setViewVisibility(R.id.widget_day_empty, View.VISIBLE)
+            views.setTextViewText(
+                R.id.widget_day_empty,
+                data.holidayName ?: context.getString(R.string.widget_holiday),
+            )
+        } else if (data.lessons.isEmpty()) {
+            views.setViewVisibility(R.id.widget_day_empty, View.VISIBLE)
+            views.setTextViewText(
+                R.id.widget_day_empty,
+                context.getString(R.string.widget_no_lessons),
+            )
+        } else {
+            views.setViewVisibility(R.id.widget_day_empty, View.GONE)
+            populateGridLines(packageName, views, R.id.widget_day_time_labels, hourHeightDp, palette, data.periods)
+            populateTimeLabels(packageName, views, R.id.widget_day_time_labels, hourHeightDp, palette, data.periods)
+            populateGridLines(packageName, views, R.id.widget_day_grid, hourHeightDp, palette, data.periods)
+            populateBreakBlocks(packageName, views, R.id.widget_day_grid, hourHeightDp, palette, data.periods)
+            for (lesson in data.lessons) {
+                addLessonBlock(
+                    context = context,
+                    packageName = packageName,
+                    parent = views,
+                    containerId = R.id.widget_day_grid,
+                    lesson = lesson,
+                    hourHeightDp = hourHeightDp,
+                    periods = data.periods,
+                    subjectOnly = false,
+                    horizontalPaddingDp = 7,
+                )
+            }
+        }
+
+        views.setOnClickPendingIntent(R.id.widget_root, openAppIntent(context))
+        return views
+    }
+
+    fun buildWeek(
+        context: Context,
+        packageName: String,
+        options: Bundle? = null,
+    ): RemoteViews {
+        val prefs = sharedPrefs(context)
+        val palette = resolvePalette(context, prefs.getString(KEY_THEME_MODE, "system"))
+        if (!prefs.getBoolean(KEY_LOGGED_IN, false)) {
+            return buildPlaceholder(
+                context,
+                packageName,
+                context.getString(R.string.widget_login_required),
+                palette,
+            )
+        }
+        val data = WidgetDataParser.parse(prefs.getString(KEY_WEEK_DATA, null))
+            ?: return buildPlaceholder(
+                context,
+                packageName,
+                context.getString(R.string.widget_loading),
+                palette,
+            )
+
+        val totalVirtualMin = data.periods.lastOrNull()?.virtualEndMinutes
+            ?: FALLBACK_VIRTUAL_MINUTES
+        val hourHeightDp = resolveHourHeight(options, WEEK_CHROME_DP, totalVirtualMin)
+
+        val views = RemoteViews(packageName, R.layout.widget_week)
+        applyChrome(views, palette, options)
+        views.setTextColor(R.id.widget_week_title, palette.textPrimary)
+        views.setTextColor(R.id.widget_week_subtitle, palette.textSecondary)
+        val cal = Calendar.getInstance().apply { time = data.anchorDate }
+        val weekNumber = cal.get(Calendar.WEEK_OF_YEAR)
+        val end = Calendar.getInstance().apply {
+            time = data.anchorDate
+            add(Calendar.DAY_OF_YEAR, 4)
+        }.time
+        val kwPrefix = context.getString(R.string.widget_calendar_week_prefix)
+        views.setTextViewText(
+            R.id.widget_week_title,
+            "$kwPrefix $weekNumber · ${dateShort.format(data.anchorDate)}–${dateShort.format(end)}",
+        )
+        views.setTextViewText(
+            R.id.widget_week_subtitle,
+            context.getString(R.string.widget_status_label, freshnessLabel(context, data.fetchedAt)),
+        )
+
+        val headerIds = listOf(
+            R.id.widget_week_header_mon,
+            R.id.widget_week_header_tue,
+            R.id.widget_week_header_wed,
+            R.id.widget_week_header_thu,
+            R.id.widget_week_header_fri,
+        )
+        val columnIds = listOf(
+            R.id.widget_week_col_mon,
+            R.id.widget_week_col_tue,
+            R.id.widget_week_col_wed,
+            R.id.widget_week_col_thu,
+            R.id.widget_week_col_fri,
+        )
+        views.removeAllViews(R.id.widget_week_time_labels)
+        populateGridLines(packageName, views, R.id.widget_week_time_labels, hourHeightDp, palette, data.periods)
+        populateTimeLabels(packageName, views, R.id.widget_week_time_labels, hourHeightDp, palette, data.periods)
+
+        val (weekWidthDp, _) = widgetSizeDp(options)
+        // Time-label column is 28dp wide; the rest is split across 5 days
+        // plus thin dividers (negligible). Drop room/teacher only on the
+        // very narrowest week widgets — autoSize handles the in-between
+        // sizes.
+        val dayColumnWidthDp = (weekWidthDp - 28f - 20f) / 5f
+        val subjectOnly = dayColumnWidthDp < WEEK_COLUMN_TIGHT_DP
+
+        for ((index, columnId) in columnIds.withIndex()) {
+            views.removeAllViews(headerIds[index])
+            views.removeAllViews(columnId)
+            val day = Calendar.getInstance().apply {
+                time = data.anchorDate
+                add(Calendar.DAY_OF_YEAR, index)
+            }.time
+            val header = RemoteViews(packageName, R.layout.widget_week_day_header)
+            header.setTextColor(R.id.widget_week_day_header_weekday, palette.textPrimary)
+            header.setTextColor(R.id.widget_week_day_header_date, palette.textSecondary)
+            header.setTextViewText(R.id.widget_week_day_header_weekday, weekdayShort.format(day))
+            header.setTextViewText(R.id.widget_week_day_header_date, dateShort.format(day))
+            views.addView(headerIds[index], header)
+
+            populateGridLines(packageName, views, columnId, hourHeightDp, palette, data.periods)
+            populateBreakBlocks(packageName, views, columnId, hourHeightDp, palette, data.periods)
+            for (lesson in data.lessons.filter { WidgetDateUtils.isSameDay(it.start, day) }) {
+                addLessonBlock(
+                    context = context,
+                    packageName = packageName,
+                    parent = views,
+                    containerId = columnId,
+                    lesson = lesson,
+                    hourHeightDp = hourHeightDp,
+                    periods = data.periods,
+                    subjectOnly = subjectOnly,
+                    horizontalPaddingDp = 3,
+                )
+            }
+        }
+
+        views.setOnClickPendingIntent(R.id.widget_root, openAppIntent(context))
+        return views
+    }
+
+    /// Pulls the launcher-reported widget size out of the AppWidget options
+    /// bundle. The grid now spans `totalVirtualMin` minutes (lessons +
+    /// preserved big breaks), so we divide by that instead of a fixed hour
+    /// count to keep tiles readable across different timetables.
+    private fun resolveHourHeight(
+        options: Bundle?,
+        chromeDp: Int,
+        totalVirtualMin: Int,
+    ): Float {
+        val virtualHours = (totalVirtualMin / 60.0f).coerceAtLeast(1f)
+        val rawHeightDp = options?.let {
+            max(
+                it.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, 0),
+                it.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, 0),
+            )
+        } ?: 0
+        if (rawHeightDp <= 0) return 32f
+        val gridHeightDp = (rawHeightDp - chromeDp)
+            .coerceAtLeast((MIN_HOUR_HEIGHT_DP * virtualHours).toInt())
+        return (gridHeightDp.toFloat() / virtualHours)
+            .coerceIn(MIN_HOUR_HEIGHT_DP.toFloat(), MAX_HOUR_HEIGHT_DP.toFloat())
+    }
+
+    /// Real wall-clock minute → position on the virtual axis. Inside a
+    /// period: linear. In a gap: linear across the virtual gap (zero for
+    /// squeezed small breaks, real width for big breaks).
+    private fun realMinutesToVirtual(
+        realMin: Int,
+        periods: List<WidgetPeriod>,
+    ): Float {
+        if (periods.isEmpty()) return realMin.toFloat()
+        for (period in periods) {
+            if (realMin in period.startMinutes..period.endMinutes) {
+                return period.virtualStartMinutes + (realMin - period.startMinutes).toFloat()
+            }
+        }
+        val first = periods.first()
+        if (realMin < first.startMinutes) {
+            return (realMin - first.startMinutes + first.virtualStartMinutes).toFloat()
+        }
+        val last = periods.last()
+        if (realMin > last.endMinutes) {
+            return last.virtualEndMinutes + (realMin - last.endMinutes).toFloat()
+        }
+        var prev = first
+        for (i in 1 until periods.size) {
+            val curr = periods[i]
+            if (realMin in (prev.endMinutes + 1) until curr.startMinutes) {
+                val gap = curr.startMinutes - prev.endMinutes
+                val virtualGap = curr.virtualStartMinutes - prev.virtualEndMinutes
+                return if (gap > 0) {
+                    prev.virtualEndMinutes +
+                        (realMin - prev.endMinutes).toFloat() * virtualGap / gap
+                } else {
+                    curr.virtualStartMinutes.toFloat()
+                }
+            }
+            prev = curr
+        }
+        return 0f
+    }
+
+    /// Below this per-hour height the two-line label collapses to a single
+    /// period number — time + number overlap otherwise.
+    private const val TIME_LABEL_COMPACT_THRESHOLD_DP = 26f
+
+    private fun populateTimeLabels(
+        packageName: String,
+        parent: RemoteViews,
+        containerId: Int,
+        hourHeightDp: Float,
+        palette: WidgetPalette,
+        periods: List<WidgetPeriod>,
+    ) {
+        val compact = hourHeightDp < TIME_LABEL_COMPACT_THRESHOLD_DP
+        for (period in periods) {
+            val label = RemoteViews(packageName, R.layout.widget_time_label)
+            label.setTextViewText(R.id.widget_time_label_number, "${period.name}.")
+            label.setTextViewText(R.id.widget_time_label_time, formatHm(period.startMinutes))
+            if (compact) {
+                label.setViewVisibility(R.id.widget_time_label_time, View.GONE)
+                label.setTextViewTextSize(
+                    R.id.widget_time_label_number,
+                    TypedValue.COMPLEX_UNIT_SP,
+                    9f,
+                )
+                label.setTextColor(R.id.widget_time_label_number, palette.textPrimary)
+            } else {
+                label.setViewVisibility(R.id.widget_time_label_time, View.VISIBLE)
+                label.setTextViewTextSize(
+                    R.id.widget_time_label_number,
+                    TypedValue.COMPLEX_UNIT_SP,
+                    7f,
+                )
+                label.setTextColor(R.id.widget_time_label_number, palette.textSecondary)
+            }
+            label.setTextColor(R.id.widget_time_label_time, palette.textPrimary)
+            val topDp = period.virtualStartMinutes * hourHeightDp / 60.0f
+            label.setViewLayoutMargin(
+                R.id.widget_time_label_root,
+                RemoteViews.MARGIN_TOP,
+                topDp,
+                TypedValue.COMPLEX_UNIT_DIP,
+            )
+            parent.addView(containerId, label)
+        }
+    }
+
+    private fun populateGridLines(
+        packageName: String,
+        parent: RemoteViews,
+        containerId: Int,
+        hourHeightDp: Float,
+        palette: WidgetPalette,
+        periods: List<WidgetPeriod>,
+    ) {
+        // Lines at every period start + end, deduped by virtual minute so
+        // adjacent periods share a line and big-break boundaries get both
+        // upper and lower edges.
+        val drawn = mutableSetOf<Int>()
+        for (period in periods) {
+            for (virtualMin in listOf(period.virtualStartMinutes, period.virtualEndMinutes)) {
+                if (!drawn.add(virtualMin)) continue
+                val line = RemoteViews(packageName, R.layout.widget_grid_line)
+                line.setInt(R.id.widget_grid_line_root, "setBackgroundColor", palette.divider)
+                val topDp = virtualMin * hourHeightDp / 60.0f
+                line.setViewLayoutMargin(
+                    R.id.widget_grid_line_root,
+                    RemoteViews.MARGIN_TOP,
+                    topDp,
+                    TypedValue.COMPLEX_UNIT_DIP,
+                )
+                parent.addView(containerId, line)
+            }
+        }
+    }
+
+    /// Faint translucent block in any virtual gap between two periods —
+    /// only big breaks (Hofpause, Mittagspause) survive the mapper's
+    /// small-break collapse.
+    private fun populateBreakBlocks(
+        packageName: String,
+        parent: RemoteViews,
+        containerId: Int,
+        hourHeightDp: Float,
+        palette: WidgetPalette,
+        periods: List<WidgetPeriod>,
+    ) {
+        for (i in 0 until periods.size - 1) {
+            val curr = periods[i]
+            val next = periods[i + 1]
+            val virtualGap = next.virtualStartMinutes - curr.virtualEndMinutes
+            if (virtualGap <= 0) continue
+            val block = RemoteViews(packageName, R.layout.widget_break_block)
+            val topDp = curr.virtualEndMinutes * hourHeightDp / 60.0f
+            val heightDp = virtualGap * hourHeightDp / 60.0f
+            block.setViewLayoutMargin(
+                R.id.widget_break_block_root,
+                RemoteViews.MARGIN_TOP,
+                topDp,
+                TypedValue.COMPLEX_UNIT_DIP,
+            )
+            block.setViewLayoutHeight(
+                R.id.widget_break_block_root,
+                heightDp,
+                TypedValue.COMPLEX_UNIT_DIP,
+            )
+            block.setInt(
+                R.id.widget_break_block_root,
+                "setBackgroundColor",
+                palette.breakBlock,
+            )
+            parent.addView(containerId, block)
+        }
+    }
+
+    private fun formatHm(minutesSinceMidnight: Int): String {
+        val h = minutesSinceMidnight / 60
+        val m = minutesSinceMidnight % 60
+        return "%02d:%02d".format(h, m)
+    }
+
+    /// Overrides the chrome XML's `@color/widget_*` defaults when the user
+    /// pins a fixed light/dark theme, and resizes the watermark M to match
+    /// the current widget bounds.
+    private fun applyChrome(views: RemoteViews, palette: WidgetPalette, options: Bundle?) {
+        views.setInt(R.id.widget_root, "setBackgroundColor", palette.background)
+        views.setInt(R.id.widget_watermark, "setColorFilter", palette.textPrimary)
+        views.setFloat(R.id.widget_watermark, "setAlpha", palette.watermarkAlpha)
+
+        val (widthDp, heightDp) = widgetSizeDp(options)
+        // Sized to the longer edge so the M scales with widget resize.
+        // Negative end/bottom margin lets a sliver tuck behind the edge.
+        val markSize = (max(widthDp, heightDp) * 0.8f).coerceIn(160f, 400f)
+        val offsetEnd = -(markSize * 0.18f)
+        val offsetBottom = -(markSize * 0.18f)
+        views.setViewLayoutWidth(
+            R.id.widget_watermark,
+            markSize,
+            TypedValue.COMPLEX_UNIT_DIP,
+        )
+        views.setViewLayoutHeight(
+            R.id.widget_watermark,
+            markSize,
+            TypedValue.COMPLEX_UNIT_DIP,
+        )
+        views.setViewLayoutMargin(
+            R.id.widget_watermark,
+            RemoteViews.MARGIN_END,
+            offsetEnd,
+            TypedValue.COMPLEX_UNIT_DIP,
+        )
+        views.setViewLayoutMargin(
+            R.id.widget_watermark,
+            RemoteViews.MARGIN_BOTTOM,
+            offsetBottom,
+            TypedValue.COMPLEX_UNIT_DIP,
+        )
+    }
+
+    private fun widgetSizeDp(options: Bundle?): Pair<Int, Int> {
+        if (options == null) return Pair(220, 220)
+        val width = max(
+            options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, 0),
+            options.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, 0),
+        ).coerceAtLeast(140)
+        val height = max(
+            options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, 0),
+            options.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, 0),
+        ).coerceAtLeast(140)
+        return Pair(width, height)
+    }
+
+    private fun addLessonBlock(
+        context: Context,
+        packageName: String,
+        parent: RemoteViews,
+        containerId: Int,
+        lesson: WidgetLesson,
+        hourHeightDp: Float,
+        periods: List<WidgetPeriod>,
+        subjectOnly: Boolean,
+        horizontalPaddingDp: Int,
+    ) {
+        val cal = Calendar.getInstance()
+        cal.time = lesson.start
+        val startMinutes = cal.get(Calendar.HOUR_OF_DAY) * 60 + cal.get(Calendar.MINUTE)
+        cal.time = lesson.end
+        val endMinutes = cal.get(Calendar.HOUR_OF_DAY) * 60 + cal.get(Calendar.MINUTE)
+        val durationMinutes = (endMinutes - startMinutes).coerceAtLeast(15)
+
+        val virtualStart = realMinutesToVirtual(startMinutes, periods)
+        val virtualEnd = realMinutesToVirtual(startMinutes + durationMinutes, periods)
+        if (virtualEnd <= virtualStart) return
+
+        // Half the gap above + half below so the grid line under the tile
+        // stays visible.
+        val topDp = virtualStart * hourHeightDp / 60.0f + LESSON_GAP_DP / 2f
+        val heightDp = ((virtualEnd - virtualStart) * hourHeightDp / 60.0f - LESSON_GAP_DP)
+            .coerceAtLeast(MIN_BLOCK_HEIGHT_DP.toFloat())
+
+        val block = RemoteViews(packageName, R.layout.widget_lesson_block)
+        block.setViewLayoutMargin(
+            R.id.widget_lesson_block_root,
+            RemoteViews.MARGIN_TOP,
+            topDp,
+            TypedValue.COMPLEX_UNIT_DIP,
+        )
+        block.setViewLayoutHeight(
+            R.id.widget_lesson_block_root,
+            heightDp,
+            TypedValue.COMPLEX_UNIT_DIP,
+        )
+        block.setInt(
+            R.id.widget_lesson_block_root,
+            "setBackgroundResource",
+            statusDrawable(lesson),
+        )
+
+        val density = context.resources.displayMetrics.density
+        val padXPx = (horizontalPaddingDp * density).toInt()
+        val padYPx = (3 * density).toInt()
+        block.setViewPadding(
+            R.id.widget_lesson_block_root,
+            padXPx, padYPx, padXPx, padYPx,
+        )
+
+        block.setTextViewText(R.id.widget_lesson_subject, subjectLabel(lesson))
+
+        // Separate fixed-size badge so the +N hint stays readable when
+        // autoSize shrinks the subject on narrow tiles.
+        if (lesson.siblingCount > 0) {
+            block.setTextViewText(
+                R.id.widget_lesson_sibling_badge,
+                "+${lesson.siblingCount}",
+            )
+            block.setViewVisibility(R.id.widget_lesson_sibling_badge, View.VISIBLE)
+        } else {
+            block.setViewVisibility(R.id.widget_lesson_sibling_badge, View.GONE)
+        }
+
+        val room = roomLabel(lesson)
+        val teacher = teacherLabel(lesson)
+        val noSecondaryContent = room.isNullOrEmpty() && teacher.isNullOrEmpty()
+        val hideSecondary = subjectOnly ||
+            heightDp < BLOCK_SHOW_ROOM_MIN_DP ||
+            noSecondaryContent
+        block.setViewVisibility(
+            R.id.widget_lesson_secondary_stack,
+            if (hideSecondary) View.GONE else View.VISIBLE,
+        )
+        // Custom-events have no room/teacher → let the subject wrap to 2 lines
+        // so long titles don't autoshrink to nothing.
+        block.setInt(
+            R.id.widget_lesson_subject,
+            "setMaxLines",
+            if (noSecondaryContent) 2 else 1,
+        )
+        when {
+            hideSecondary -> {
+                applyOptionalText(block, R.id.widget_lesson_room, null)
+                applyOptionalText(block, R.id.widget_lesson_teacher, null)
+            }
+            heightDp < BLOCK_SHOW_TEACHER_SEPARATE_MIN_DP -> {
+                applyOptionalText(block, R.id.widget_lesson_room, room)
+                applyOptionalText(block, R.id.widget_lesson_teacher, null)
+            }
+            else -> {
+                applyOptionalText(block, R.id.widget_lesson_room, room)
+                applyOptionalText(block, R.id.widget_lesson_teacher, teacher)
+            }
+        }
+
+        parent.addView(containerId, block)
+    }
+
+    private fun applyOptionalText(views: RemoteViews, viewId: Int, text: String?) {
+        if (text.isNullOrEmpty()) {
+            views.setViewVisibility(viewId, View.GONE)
+        } else {
+            views.setTextViewText(viewId, text)
+            views.setViewVisibility(viewId, View.VISIBLE)
+        }
+    }
+
+    /// Custom-events use the user-picked palette (orange/red/green/blue,
+    /// mirroring CustomTimetableColors).
+    private fun statusDrawable(lesson: WidgetLesson): Int {
+        if (lesson.status == WidgetLessonStatus.EVENT && lesson.customColor != null) {
+            return when (lesson.customColor) {
+                "orange" -> R.drawable.widget_lesson_block_event_orange
+                "red" -> R.drawable.widget_lesson_block_event_red
+                "green" -> R.drawable.widget_lesson_block_event_green
+                "blue" -> R.drawable.widget_lesson_block_event_blue
+                else -> R.drawable.widget_lesson_block_event_orange
+            }
+        }
+        return when (lesson.status) {
+            WidgetLessonStatus.CANCELLED -> R.drawable.widget_lesson_block_cancelled
+            WidgetLessonStatus.IRREGULAR -> R.drawable.widget_lesson_block_irregular
+            WidgetLessonStatus.TEACHER_CHANGED -> R.drawable.widget_lesson_block_teacher_changed
+            WidgetLessonStatus.PAST -> R.drawable.widget_lesson_block_past
+            WidgetLessonStatus.EVENT -> R.drawable.widget_lesson_block_event_orange
+            WidgetLessonStatus.ONGOING -> R.drawable.widget_lesson_block_ongoing
+            WidgetLessonStatus.REGULAR -> R.drawable.widget_lesson_block_regular
+        }
+    }
+
+    private fun subjectLabel(lesson: WidgetLesson): String {
+        return lesson.subjectShort.ifEmpty { lesson.subjectLong ?: "—" }
+    }
+
+    private fun roomLabel(lesson: WidgetLesson): String? = lesson.room
+
+    private fun teacherLabel(lesson: WidgetLesson): String? =
+        lesson.teacher ?: lesson.originalTeacher
+
+    private fun dayLabel(context: Context, anchor: Date): String {
+        val today = WidgetDateUtils.startOfDay(Date())
+        val tomorrow = Calendar.getInstance().apply {
+            time = today
+            add(Calendar.DAY_OF_YEAR, 1)
+        }.time
+        val anchorStart = WidgetDateUtils.startOfDay(anchor)
+        return when {
+            anchorStart == today -> context.getString(R.string.widget_today)
+            anchorStart == tomorrow -> context.getString(R.string.widget_tomorrow)
+            else -> SimpleDateFormat("EEEE", Locale.GERMAN).format(anchor)
+        }
+    }
+
+    private fun freshnessLabel(context: Context, fetchedAt: Date): String {
+        val today = WidgetDateUtils.startOfDay(Date())
+        val fetchedDay = WidgetDateUtils.startOfDay(fetchedAt)
+        val yesterday = Calendar.getInstance().apply {
+            time = today
+            add(Calendar.DAY_OF_YEAR, -1)
+        }.time
+        val yesterdayPrefix = context.getString(R.string.widget_yesterday_prefix)
+        return when (fetchedDay) {
+            today -> timeFormat.format(fetchedAt)
+            yesterday -> "$yesterdayPrefix ${timeFormat.format(fetchedAt)}"
+            else -> dateTimeShort.format(fetchedAt)
+        }
+    }
+
+    private fun buildPlaceholder(
+        context: Context,
+        packageName: String,
+        message: String,
+        palette: WidgetPalette,
+    ): RemoteViews {
+        val views = RemoteViews(packageName, R.layout.widget_placeholder)
+        applyChrome(views, palette, null)
+        views.setTextColor(R.id.widget_placeholder_title, palette.textPrimary)
+        views.setTextColor(R.id.widget_placeholder_message, palette.textSecondary)
+        views.setTextViewText(
+            R.id.widget_placeholder_title,
+            context.getString(R.string.widget_placeholder_title),
+        )
+        views.setTextViewText(R.id.widget_placeholder_message, message)
+        views.setOnClickPendingIntent(
+            R.id.widget_placeholder_message,
+            openAppIntent(context),
+        )
+        return views
+    }
+
+    private fun openAppIntent(context: Context): PendingIntent {
+        // ACTION_MAIN + LAUNCHER mirrors a launcher tap; the boolean extra
+        // is consumed by Dart via WidgetNavigation to route to the timetable.
+        val intent = Intent(context, MainActivity::class.java).apply {
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP
+            action = Intent.ACTION_MAIN
+            addCategory(Intent.CATEGORY_LAUNCHER)
+            putExtra("widget_open_timetable", true)
+        }
+        return PendingIntent.getActivity(
+            context,
+            0,
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+        )
+    }
+
+    private fun sharedPrefs(context: Context): SharedPreferences {
+        return context.getSharedPreferences(
+            "HomeWidgetPreferences",
+            Context.MODE_PRIVATE,
+        )
+    }
+
+    const val KEY_DAY_DATA = "widget_data_day_v1"
+    const val KEY_WEEK_DATA = "widget_data_week_v1"
+    const val KEY_LOGGED_IN = "widget_data_logged_in_v1"
+    const val KEY_THEME_MODE = "widget_setting_theme_mode_v1"
+}

android/app/src/main/res/drawable/app_widget_background.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Plain rounded rectangle. We deliberately avoid ?attr/appWidgetRadius
+     because RemoteViews inflation does not resolve custom theme attributes
+     reliably across launchers. Hard-coded 20dp matches the system home-screen
+     radius closely on stock Android. -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="20dp" />
+    <solid android:color="@color/widget_background" />
+</shape>

android/app/src/main/res/drawable/marianum_m_watermark.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Direct port of /home/elias/Bilder/marianum_m_white.svg.
+  - viewport matches the source SVG (70mm × 82.2mm).
+  - Transforms recreate the SVG's three nested matrices: outer scale+offset,
+    inner translate, and a final scale+y-flip that pulls the path data into
+    the visible coordinate space.
+  - Tinted at runtime via setColorFilter so light/dark themes can share one
+    drawable.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="70dp"
+    android:height="82dp"
+    android:viewportWidth="70.000168"
+    android:viewportHeight="82.227348">
+
+    <group
+        android:scaleX="0.26458333"
+        android:scaleY="0.26458334"
+        android:translateX="107.44411"
+        android:translateY="-80.482198">
+        <group
+            android:translateX="-749.41293"
+            android:translateY="290.52252">
+            <group
+                android:scaleX="0.13333333"
+                android:scaleY="-0.13333333"
+                android:translateX="0"
+                android:translateY="632.14667">
+                <path
+                    android:fillColor="#FFFFFF"
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+            </group>
+        </group>
+    </group>
+</vector>

android/app/src/main/res/drawable/widget_grid_line.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/widget_divider" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_cancelled.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="6dp" />
+            <solid android:color="@color/widget_lesson_cancelled" />
+            <stroke android:width="1.5dp" android:color="#C8FF0000" />
+        </shape>
+    </item>
+    <item
+        android:left="3dp"
+        android:top="3dp"
+        android:right="3dp"
+        android:bottom="3dp"
+        android:drawable="@drawable/widget_lesson_cancelled_x" />
+</layer-list>

android/app/src/main/res/drawable/widget_lesson_block_event_blue.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="#FF2196F3" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_event_green.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="#FF4CAF50" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_event_orange.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="#FFEF6C00" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_event_red.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="#FF993333" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_irregular.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="@color/widget_lesson_irregular" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_ongoing.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="@color/widget_lesson_ongoing" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_past.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="@color/widget_lesson_past" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_regular.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="@color/widget_lesson_regular" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_block_teacher_changed.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="6dp" />
+    <solid android:color="@color/widget_lesson_teacher_changed" />
+</shape>

android/app/src/main/res/drawable/widget_lesson_cancelled_x.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="100dp"
+    android:height="100dp"
+    android:viewportWidth="100"
+    android:viewportHeight="100">
+    <path
+        android:strokeColor="#C8FF0000"
+        android:strokeWidth="5"
+        android:pathData="M0,0 L100,100 M100,0 L0,100" />
+</vector>

android/app/src/main/res/layout/widget_break_block.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/widget_break_block_root"
+    android:layout_width="match_parent"
+    android:layout_height="14dp"
+    android:layout_marginTop="0dp"
+    android:layout_marginStart="2dp"
+    android:layout_marginEnd="2dp" />

android/app/src/main/res/layout/widget_day.xml

@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- FrameLayout root so the Marianum watermark can sit at bottom|end behind
+     the actual widget content without disturbing the LinearLayout flow. -->
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_root"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/app_widget_background">
+
+    <!-- Bottom-leading so the mark looks like it's peeking out of the lower
+         left corner. Width/height/start+bottom margins are overridden in the
+         renderer so the mark scales with the widget size. -->
+    <ImageView
+        android:id="@+id/widget_watermark"
+        android:layout_width="160dp"
+        android:layout_height="160dp"
+        android:layout_gravity="bottom|end"
+        android:scaleType="fitCenter"
+        android:importantForAccessibility="no"
+        android:contentDescription="@null"
+        android:alpha="0.025"
+        android:src="@drawable/marianum_m_watermark" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="10dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+            <TextView
+                android:id="@+id/widget_day_title"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:textSize="14sp"
+                android:textStyle="bold"
+                android:textColor="@color/widget_text_primary"
+                android:singleLine="true"
+                android:ellipsize="end"
+                tools:text="Heute · 08.05." />
+            <TextView
+                android:id="@+id/widget_day_subtitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="10sp"
+                android:textColor="@color/widget_text_secondary"
+                tools:text="Stand: 14:32" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:layout_marginTop="6dp"
+            android:orientation="horizontal">
+
+            <FrameLayout
+                android:id="@+id/widget_day_time_labels"
+                android:layout_width="32dp"
+                android:layout_height="match_parent" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_day_grid"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1" />
+        </LinearLayout>
+
+        <TextView
+            android:id="@+id/widget_day_empty"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:visibility="gone"
+            android:textSize="13sp"
+            android:textColor="@color/widget_text_secondary"
+            android:gravity="center"
+            android:padding="12dp"
+            tools:text="Keine Stunden" />
+    </LinearLayout>
+</FrameLayout>

android/app/src/main/res/layout/widget_day_preview.xml

@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/widget_background">
+
+    <ImageView
+        android:layout_width="160dp"
+        android:layout_height="160dp"
+        android:layout_gravity="bottom|end"
+        android:layout_marginEnd="-28dp"
+        android:layout_marginBottom="-28dp"
+        android:scaleType="fitCenter"
+        android:importantForAccessibility="no"
+        android:contentDescription="@null"
+        android:alpha="0.018"
+        android:src="@drawable/marianum_m_watermark" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="10dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+            <TextView
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:textSize="14sp"
+                android:textStyle="bold"
+                android:textColor="@color/widget_text_primary"
+                android:singleLine="true"
+                android:text="Heute · 06.05." />
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="10sp"
+                android:textColor="@color/widget_text_secondary"
+                android:text="Stand: 07:50" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:orientation="horizontal"
+            android:layout_marginTop="6dp">
+
+            <FrameLayout
+                android:layout_width="32dp"
+                android:layout_height="match_parent">
+
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
+                    android:orientation="vertical" android:gravity="end" android:paddingEnd="3dp"
+                    android:layout_marginTop="22dp">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@color/widget_text_primary" android:text="1." />
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="7sp" android:textColor="@color/widget_text_secondary" android:text="07:55" />
+                </LinearLayout>
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
+                    android:orientation="vertical" android:gravity="end" android:paddingEnd="3dp"
+                    android:layout_marginTop="50dp">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@color/widget_text_primary" android:text="2." />
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="7sp" android:textColor="@color/widget_text_secondary" android:text="08:40" />
+                </LinearLayout>
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
+                    android:orientation="vertical" android:gravity="end" android:paddingEnd="3dp"
+                    android:layout_marginTop="79dp">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@color/widget_text_primary" android:text="3." />
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="7sp" android:textColor="@color/widget_text_secondary" android:text="09:30" />
+                </LinearLayout>
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
+                    android:orientation="vertical" android:gravity="end" android:paddingEnd="3dp"
+                    android:layout_marginTop="115dp">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@color/widget_text_primary" android:text="4." />
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="7sp" android:textColor="@color/widget_text_secondary" android:text="10:35" />
+                </LinearLayout>
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
+                    android:orientation="vertical" android:gravity="end" android:paddingEnd="3dp"
+                    android:layout_marginTop="142dp">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@color/widget_text_primary" android:text="5." />
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="7sp" android:textColor="@color/widget_text_secondary" android:text="11:25" />
+                </LinearLayout>
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
+                    android:orientation="vertical" android:gravity="end" android:paddingEnd="3dp"
+                    android:layout_marginTop="169dp">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@color/widget_text_primary" android:text="6." />
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="7sp" android:textColor="@color/widget_text_secondary" android:text="12:15" />
+                </LinearLayout>
+            </FrameLayout>
+
+            <FrameLayout
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1">
+
+                <FrameLayout android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginTop="29dp" android:background="@color/widget_divider" />
+                <FrameLayout android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginTop="56dp" android:background="@color/widget_divider" />
+                <FrameLayout android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginTop="83dp" android:background="@color/widget_divider" />
+                <FrameLayout android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginTop="115dp" android:background="@color/widget_divider" />
+                <FrameLayout android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginTop="143dp" android:background="@color/widget_divider" />
+                <FrameLayout android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginTop="170dp" android:background="@color/widget_divider" />
+
+                <FrameLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="22dp"
+                    android:layout_marginTop="29dp"
+                    android:layout_marginStart="2dp"
+                    android:layout_marginEnd="2dp"
+                    android:padding="3dp"
+                    android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@android:color/white" android:text="MA-LK" />
+                </FrameLayout>
+
+                <FrameLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="55dp"
+                    android:layout_marginTop="83dp"
+                    android:layout_marginStart="2dp"
+                    android:layout_marginEnd="2dp"
+                    android:padding="3dp"
+                    android:background="@drawable/widget_lesson_block_regular">
+                    <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:orientation="vertical">
+                        <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                            android:textSize="11sp" android:textStyle="bold"
+                            android:textColor="@android:color/white" android:text="DE-GK" />
+                        <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                            android:textSize="9sp" android:textColor="#CCFFFFFF" android:text="B11" />
+                    </LinearLayout>
+                </FrameLayout>
+
+                <FrameLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="22dp"
+                    android:layout_marginTop="143dp"
+                    android:layout_marginStart="2dp"
+                    android:layout_marginEnd="2dp"
+                    android:padding="3dp"
+                    android:background="@drawable/widget_lesson_block_cancelled">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@android:color/white" android:text="BIO" />
+                </FrameLayout>
+
+                <FrameLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="22dp"
+                    android:layout_marginTop="170dp"
+                    android:layout_marginStart="2dp"
+                    android:layout_marginEnd="2dp"
+                    android:padding="3dp"
+                    android:background="@drawable/widget_lesson_block_teacher_changed">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
+                        android:textSize="11sp" android:textStyle="bold"
+                        android:textColor="@android:color/white" android:text="GE" />
+                </FrameLayout>
+            </FrameLayout>
+        </LinearLayout>
+    </LinearLayout>
+</FrameLayout>

android/app/src/main/res/layout/widget_grid_line.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/widget_grid_line_root"
+    android:layout_width="match_parent"
+    android:layout_height="1dp"
+    android:layout_marginTop="0dp"
+    android:background="@drawable/widget_grid_line" />

android/app/src/main/res/layout/widget_lesson_block.xml

@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_lesson_block_root"
+    android:layout_width="match_parent"
+    android:layout_height="40dp"
+    android:layout_marginStart="2dp"
+    android:layout_marginEnd="2dp"
+    android:layout_marginTop="0dp"
+    android:paddingStart="7dp"
+    android:paddingEnd="7dp"
+    android:paddingTop="3dp"
+    android:paddingBottom="3dp"
+    android:background="@drawable/widget_lesson_block_regular">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="horizontal"
+        android:gravity="top"
+        android:baselineAligned="false">
+
+        <TextView
+            android:id="@+id/widget_lesson_subject"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:textStyle="bold"
+            android:textColor="@android:color/white"
+            android:maxLines="1"
+            android:ellipsize="end"
+            android:gravity="top|start"
+            android:includeFontPadding="false"
+            android:autoSizeTextType="uniform"
+            android:autoSizeMinTextSize="5sp"
+            android:autoSizeMaxTextSize="11sp"
+            android:autoSizeStepGranularity="1sp"
+            tools:text="MA-LK" />
+
+        <LinearLayout
+            android:id="@+id/widget_lesson_secondary_stack"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:gravity="top|end"
+            android:layout_marginStart="4dp">
+
+            <TextView
+                android:id="@+id/widget_lesson_room"
+                android:layout_width="wrap_content"
+                android:layout_height="12dp"
+                android:textColor="#CCFFFFFF"
+                android:maxLines="1"
+                android:ellipsize="end"
+                android:gravity="end|top"
+                android:includeFontPadding="false"
+                android:autoSizeTextType="uniform"
+                android:autoSizeMinTextSize="5sp"
+                android:autoSizeMaxTextSize="11sp"
+                android:autoSizeStepGranularity="1sp"
+                tools:text="A12" />
+
+            <TextView
+                android:id="@+id/widget_lesson_teacher"
+                android:layout_width="wrap_content"
+                android:layout_height="12dp"
+                android:textColor="#B3FFFFFF"
+                android:maxLines="1"
+                android:ellipsize="end"
+                android:gravity="end|top"
+                android:includeFontPadding="false"
+                android:autoSizeTextType="uniform"
+                android:autoSizeMinTextSize="5sp"
+                android:autoSizeMaxTextSize="11sp"
+                android:autoSizeStepGranularity="1sp"
+                tools:text="Müller" />
+        </LinearLayout>
+    </LinearLayout>
+
+    <TextView
+        android:id="@+id/widget_lesson_sibling_badge"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|start"
+        android:textStyle="bold"
+        android:textSize="12sp"
+        android:textColor="@android:color/white"
+        android:maxLines="1"
+        android:includeFontPadding="false"
+        android:visibility="gone"
+        tools:text="+1" />
+</FrameLayout>

android/app/src/main/res/layout/widget_placeholder.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_root"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/app_widget_background">
+
+    <ImageView
+        android:id="@+id/widget_watermark"
+        android:layout_width="160dp"
+        android:layout_height="160dp"
+        android:layout_gravity="bottom|end"
+        android:scaleType="fitCenter"
+        android:importantForAccessibility="no"
+        android:contentDescription="@null"
+        android:alpha="0.025"
+        android:src="@drawable/marianum_m_watermark" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:gravity="center"
+        android:padding="16dp">
+
+        <TextView
+            android:id="@+id/widget_placeholder_title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textSize="14sp"
+            android:textStyle="bold"
+            android:textColor="@color/widget_text_primary"
+            tools:text="Marianum Vertretungsplan" />
+
+        <TextView
+            android:id="@+id/widget_placeholder_message"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:textSize="12sp"
+            android:layout_marginTop="6dp"
+            android:textColor="@color/widget_text_secondary"
+            tools:text="Bitte einloggen, um den Stundenplan zu laden" />
+    </LinearLayout>
+</FrameLayout>

android/app/src/main/res/layout/widget_time_label.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_time_label_root"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginTop="0dp"
+    android:orientation="vertical"
+    android:gravity="end"
+    android:paddingEnd="3dp">
+
+    <TextView
+        android:id="@+id/widget_time_label_time"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="9sp"
+        android:textColor="@color/widget_text_primary"
+        android:singleLine="true"
+        android:lineSpacingExtra="-2dp"
+        tools:text="07:55" />
+
+    <TextView
+        android:id="@+id/widget_time_label_number"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="7sp"
+        android:textColor="@color/widget_text_secondary"
+        android:singleLine="true"
+        android:lineSpacingExtra="-2dp"
+        tools:text="1." />
+</LinearLayout>

android/app/src/main/res/layout/widget_week.xml

@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_root"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/app_widget_background">
+
+    <ImageView
+        android:id="@+id/widget_watermark"
+        android:layout_width="160dp"
+        android:layout_height="160dp"
+        android:layout_gravity="bottom|end"
+        android:scaleType="fitCenter"
+        android:importantForAccessibility="no"
+        android:contentDescription="@null"
+        android:alpha="0.025"
+        android:src="@drawable/marianum_m_watermark" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="10dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+            <TextView
+                android:id="@+id/widget_week_title"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:textSize="14sp"
+                android:textStyle="bold"
+                android:textColor="@color/widget_text_primary"
+                android:singleLine="true"
+                android:ellipsize="end"
+                tools:text="KW 19 · 06.05.–10.05." />
+            <TextView
+                android:id="@+id/widget_week_subtitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="10sp"
+                android:textColor="@color/widget_text_secondary"
+                tools:text="Stand: 14:32" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_marginTop="6dp">
+
+            <FrameLayout
+                android:layout_width="28dp"
+                android:layout_height="wrap_content" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_header_mon"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_header_tue"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_header_wed"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_header_thu"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_header_fri"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:layout_marginTop="2dp"
+            android:orientation="horizontal">
+
+            <FrameLayout
+                android:id="@+id/widget_week_time_labels"
+                android:layout_width="28dp"
+                android:layout_height="match_parent" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_col_mon"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_col_tue"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_col_wed"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_col_thu"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1" />
+
+            <FrameLayout
+                android:layout_width="1dp"
+                android:layout_height="match_parent"
+                android:background="@color/widget_divider" />
+
+            <FrameLayout
+                android:id="@+id/widget_week_col_fri"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1" />
+        </LinearLayout>
+    </LinearLayout>
+</FrameLayout>

android/app/src/main/res/layout/widget_week_day_header.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/widget_week_day_header_root"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:gravity="center"
+    android:paddingTop="2dp"
+    android:paddingBottom="3dp">
+
+    <TextView
+        android:id="@+id/widget_week_day_header_weekday"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="11sp"
+        android:textStyle="bold"
+        android:textColor="@color/widget_text_primary"
+        tools:text="Mo" />
+
+    <TextView
+        android:id="@+id/widget_week_day_header_date"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="9sp"
+        android:textColor="@color/widget_text_secondary"
+        tools:text="06.05." />
+</LinearLayout>

android/app/src/main/res/layout/widget_week_preview.xml

@@ -0,0 +1,147 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Static preview for the week widget. Five day columns with two short
+     demo blocks each so the structure is recognisable in the picker. -->
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/widget_background">
+
+    <ImageView
+        android:layout_width="200dp"
+        android:layout_height="200dp"
+        android:layout_gravity="bottom|end"
+        android:layout_marginEnd="-36dp"
+        android:layout_marginBottom="-36dp"
+        android:scaleType="fitCenter"
+        android:importantForAccessibility="no"
+        android:contentDescription="@null"
+        android:alpha="0.018"
+        android:src="@drawable/marianum_m_watermark" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="10dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+            <TextView
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:textSize="14sp"
+                android:textStyle="bold"
+                android:textColor="@color/widget_text_primary"
+                android:singleLine="true"
+                android:text="KW 19 · 06.05.–10.05." />
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="10sp"
+                android:textColor="@color/widget_text_secondary"
+                android:text="Stand: 07:50" />
+        </LinearLayout>
+
+        <!-- Day-name + date row -->
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_marginTop="6dp">
+            <FrameLayout android:layout_width="20dp" android:layout_height="wrap_content" />
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical" android:gravity="center">
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textStyle="bold" android:textColor="@color/widget_text_primary" android:text="Mo" />
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textColor="@color/widget_text_secondary" android:text="06.05." />
+            </LinearLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical" android:gravity="center">
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textStyle="bold" android:textColor="@color/widget_text_primary" android:text="Di" />
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textColor="@color/widget_text_secondary" android:text="07.05." />
+            </LinearLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical" android:gravity="center">
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textStyle="bold" android:textColor="@color/widget_text_primary" android:text="Mi" />
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textColor="@color/widget_text_secondary" android:text="08.05." />
+            </LinearLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical" android:gravity="center">
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textStyle="bold" android:textColor="@color/widget_text_primary" android:text="Do" />
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textColor="@color/widget_text_secondary" android:text="09.05." />
+            </LinearLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical" android:gravity="center">
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="11sp" android:textStyle="bold" android:textColor="@color/widget_text_primary" android:text="Fr" />
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textColor="@color/widget_text_secondary" android:text="10.05." />
+            </LinearLayout>
+        </LinearLayout>
+
+        <!-- Time grid: time-label column + 5 day columns -->
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:orientation="horizontal"
+            android:layout_marginTop="2dp">
+
+            <FrameLayout android:layout_width="20dp" android:layout_height="match_parent">
+                <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="0dp" android:gravity="end" android:paddingEnd="3dp" android:textSize="8sp" android:textColor="@color/widget_text_secondary" android:text="08" />
+                <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="36dp" android:gravity="end" android:paddingEnd="3dp" android:textSize="8sp" android:textColor="@color/widget_text_secondary" android:text="10" />
+                <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="72dp" android:gravity="end" android:paddingEnd="3dp" android:textSize="8sp" android:textColor="@color/widget_text_secondary" android:text="12" />
+            </FrameLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+
+            <!-- Mon -->
+            <FrameLayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1">
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="2dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="MA" />
+                </FrameLayout>
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="40dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="EN" />
+                </FrameLayout>
+            </FrameLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+
+            <!-- Tue -->
+            <FrameLayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1">
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="20dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_cancelled">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="BIO" />
+                </FrameLayout>
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="60dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="DE" />
+                </FrameLayout>
+            </FrameLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+
+            <!-- Wed -->
+            <FrameLayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1">
+                <FrameLayout android:layout_width="match_parent" android:layout_height="32dp" android:layout_marginTop="2dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="MA" />
+                </FrameLayout>
+            </FrameLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+
+            <!-- Thu -->
+            <FrameLayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1">
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="2dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_teacher_changed">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="GE" />
+                </FrameLayout>
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="40dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="PH" />
+                </FrameLayout>
+            </FrameLayout>
+            <FrameLayout android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/widget_divider" />
+
+            <!-- Fri -->
+            <FrameLayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1">
+                <FrameLayout android:layout_width="match_parent" android:layout_height="14dp" android:layout_marginTop="20dp" android:layout_marginStart="1dp" android:layout_marginEnd="1dp" android:padding="2dp" android:background="@drawable/widget_lesson_block_regular">
+                    <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="9sp" android:textStyle="bold" android:textColor="@android:color/white" android:text="EN" />
+                </FrameLayout>
+            </FrameLayout>
+        </LinearLayout>
+    </LinearLayout>
+</FrameLayout>

android/app/src/main/res/values-night/widget_colors.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="widget_background">#FF1F1716</color>
+    <color name="widget_text_primary">#FFF1F1F1</color>
+    <color name="widget_text_secondary">#FFB0B0B0</color>
+    <color name="widget_divider">#33FFFFFF</color>
+</resources>

android/app/src/main/res/values/strings.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="widget_day_label">Marianum · Heute</string>
+    <string name="widget_week_label">Marianum · Woche</string>
+    <string name="widget_day_description">Stundenplan und Vertretungen für den anstehenden Schultag.</string>
+    <string name="widget_week_description">Stundenplan und Vertretungen für die ganze Schulwoche.</string>
+    <string name="widget_no_lessons">Keine Stunden</string>
+    <string name="widget_holiday">Ferien</string>
+    <string name="widget_login_required">Bitte einloggen, um den Stundenplan zu laden</string>
+    <string name="widget_loading">Lade…</string>
+    <string name="widget_status_label">Stand: %1$s</string>
+    <string name="widget_today">Heute</string>
+    <string name="widget_tomorrow">Morgen</string>
+    <string name="widget_placeholder_title">Marianum Stundenplan</string>
+    <string name="widget_calendar_week_prefix">KW</string>
+    <string name="widget_yesterday_prefix">gestern</string>
+</resources>

android/app/src/main/res/values/widget_colors.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Status colors mirror lib/view/pages/timetable/data/lesson_color.dart
+         exactly so widget tiles match the in-app calendar. -->
+    <color name="widget_lesson_regular">#FF993333</color>
+    <color name="widget_lesson_ongoing">#FFC83333</color>
+    <color name="widget_lesson_past">#FF993333</color>
+    <color name="widget_lesson_cancelled">#FF000000</color>
+    <color name="widget_lesson_irregular">#FF8F19B3</color>
+    <color name="widget_lesson_teacher_changed">#FF29639B</color>
+    <color name="widget_lesson_event">#FF2E7D32</color>
+
+    <color name="widget_background">#FFFCF7F5</color>
+    <color name="widget_text_primary">#FF111111</color>
+    <color name="widget_text_secondary">#FF555555</color>
+    <color name="widget_divider">#22000000</color>
+</resources>

android/app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Auto-Backup rules for Android 11 and below.
+     Excludes the home_widget plugin's SharedPreferences file
+     (HomeWidgetPreferences) so the cached timetable — which contains
+     teacher names, room numbers and personal custom events — is not
+     uploaded to the user's Google Drive. -->
+<full-backup-content>
+    <exclude domain="sharedpref" path="HomeWidgetPreferences.xml"/>
+</full-backup-content>

android/app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Backup + device-transfer rules for Android 12+.
+     Excludes the home_widget plugin's SharedPreferences file
+     (HomeWidgetPreferences) so the cached timetable — which contains
+     teacher names, room numbers and personal custom events — is not
+     uploaded to the user's Google Drive or transferred to a new device.
+     The widget repopulates from a fresh Webuntis fetch after sign-in. -->
+<data-extraction-rules>
+    <cloud-backup>
+        <exclude domain="sharedpref" path="HomeWidgetPreferences.xml"/>
+    </cloud-backup>
+    <device-transfer>
+        <exclude domain="sharedpref" path="HomeWidgetPreferences.xml"/>
+    </device-transfer>
+</data-extraction-rules>

android/app/src/main/res/xml/timetable_day_widget_info.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:initialLayout="@layout/widget_placeholder"
+    android:minWidth="110dp"
+    android:minHeight="180dp"
+    android:targetCellWidth="2"
+    android:targetCellHeight="5"
+    android:resizeMode="horizontal|vertical"
+    android:widgetCategory="home_screen"
+    android:updatePeriodMillis="0"
+    android:description="@string/widget_day_description"
+    android:previewLayout="@layout/widget_day_preview" />

android/app/src/main/res/xml/timetable_week_widget_info.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:initialLayout="@layout/widget_placeholder"
+    android:minWidth="320dp"
+    android:minHeight="240dp"
+    android:targetCellWidth="5"
+    android:targetCellHeight="5"
+    android:resizeMode="horizontal|vertical"
+    android:widgetCategory="home_screen"
+    android:updatePeriodMillis="0"
+    android:description="@string/widget_week_description"
+    android:previewLayout="@layout/widget_week_preview" />

android/build.gradle

@@ -9,6 +9,29 @@ rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
 }
+// Pin every Android subproject to JVM 17 so plugins that ship Kotlin sources
+// compiled with a higher target (e.g. receive_sharing_intent at 21) or stale
+// Java compatibility (e.g. home_widget at 1.8) don't break the build under
+// newer Gradle/Kotlin tooling. Registered before evaluationDependsOn so the
+// afterEvaluate fires at the right point in the lifecycle.
+subprojects { sub ->
+    sub.afterEvaluate {
+        if (sub.hasProperty('android')) {
+            sub.android {
+                compileOptions {
+                    sourceCompatibility = JavaVersion.VERSION_17
+                    targetCompatibility = JavaVersion.VERSION_17
+                }
+            }
+        }
+        sub.tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
+            kotlinOptions {
+                jvmTarget = '17'
+            }
+        }
+    }
+}
+
 subprojects {
     project.evaluationDependsOn(':app')
 }

android/settings.gradle

@@ -21,7 +21,7 @@ plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
     id "com.android.application" version '8.13.2' apply false
     id "com.android.library" version '8.13.2' apply false
-    id "org.jetbrains.kotlin.android" version "2.1.10" apply false
+    id "org.jetbrains.kotlin.android" version "2.2.20" apply false
     id 'org.gradle.toolchains.foojay-resolver-convention' version '0.10.0'
 }
 

assets/img/marianum_m_white.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="70.000168mm"
+   height="82.227348mm"
+   viewBox="0 0 70.000168 82.227348"
+   version="1.1"
+   id="svg1"
+   xml:space="preserve"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"><defs
+     id="defs1" /><g
+     id="g1"
+     transform="matrix(0.26458333,0,0,0.26458334,107.44411,-80.482198)"><g
+       id="group-R5"
+       transform="translate(-749.41293,290.52252)"><path
+         id="path3"
+         d="m 3499.67,4594.33 c -16.43,-106.19 -29.71,-199.97 -43.79,-293.49 86.83,-19 138.5,-27.61 223.38,-43.82 63.81,-12.18 175.24,-20.4 179.64,-83.23 6.46,-92.69 -124.69,-55.41 -188.38,-43.81 -84.33,15.36 -159.13,28.84 -232.2,43.81 -13.68,-60.72 -26.83,-118.68 -39.43,-179.61 -36.76,-178.32 -73.67,-368.16 -105.11,-551.97 18.09,25.66 30.84,42.72 43.8,65.7 66.7,118.26 140.39,245.04 227.76,354.83 33.49,42.05 76.86,94.81 118.31,113.91 98.42,45.36 166.68,-22.2 170.87,-118.28 3.68,-85.28 -23.09,-181.17 -35.08,-275.99 -12.4,-98.19 -22.89,-194.93 -35.03,-275.98 72.44,102.69 147.93,269.64 240.95,381.12 27.51,33 73.55,80.61 118.27,87.62 218.76,34.33 126.58,-312.17 127.05,-473.13 0.4,-144.9 44.01,-255.37 175.21,-271.59 43.02,-5.31 105.84,11.16 112.7,-26.34 8.67,-47.38 -78.15,-60.52 -125.84,-61.28 -291.34,-4.51 -322.06,262.33 -311.01,573.88 -19.85,-18.57 -35.71,-47.53 -52.57,-74.47 -97.59,-155.88 -203.95,-327.22 -297.92,-503.79 -25.93,-48.79 -53.68,-114.7 -135.8,-83.23 -17.27,6.63 -48.25,44.39 -52.56,56.96 -19.58,57.19 1.55,137.42 8.76,205.89 21.54,203.72 57.81,389.09 78.87,587.01 -26.3,0.51 -43.93,-30.07 -56.96,-48.2 -46.9,-65.27 -86.02,-140.76 -127.04,-214.64 -52.84,-95.15 -108.23,-192.84 -157.71,-293.52 -75.25,-153.09 -188.6,-501.89 -242.12,-678.81 -8.67,-28.67 -17.7,-58.08 -26.3,-87.64 -7.48,-25.72 -10.39,-57.68 -35.05,-74.46 -100.02,18.93 -89.71,104.89 -70.09,205.9 47.35,243.43 170.89,706.45 211.48,946.04 -72.97,-70.97 -153.99,-207.41 -289.14,-236.55 -136.47,-29.44 -217.95,47.68 -271.6,122.66 -17.14,23.96 -41.43,49.54 -26.29,78.84 83.96,35.51 113.37,-65.2 197.15,-74.47 22.65,-2.5 54.56,2.4 74.46,8.78 132.4,42.34 237.57,218.76 297.87,346.07 74.16,156.45 125.32,330.5 148.95,490.64 -65.71,11.4 -142.96,22.15 -219.25,36.52 -109.8,20.72 -158.81,10.75 -201.29,59.86 9.15,41.95 41.41,60.8 70.1,83.24 126.26,-16.84 252.45,-33.77 372.36,-56.97 20.43,89.25 51.98,218.51 74.45,311.05 40.53,26.02 88.88,-8.43 105.17,-35.06"
+         style="fill:#d3d2d2;fill-opacity:1;fill-rule:evenodd;stroke:none"
+         transform="matrix(0.13333333,0,0,-0.13333333,0,632.14667)" /></g></g></svg>

ios/Podfile

@@ -34,6 +34,10 @@ target 'Runner' do
   pod 'PhoneNumberKit', '~> 3.7.6'
 
   flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+
+  target 'Share Extension' do
+    inherit! :search_paths
+  end
 #  target 'RunnerTests' do
 #    inherit! :search_paths
 #  end

ios/Runner/Info.plist

@@ -2,6 +2,19 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 	<dict>
+		<key>AppGroupId</key>
+		<string>$(CUSTOM_GROUP_ID)</string>
+		<key>CFBundleURLTypes</key>
+		<array>
+			<dict>
+				<key>CFBundleTypeRole</key>
+				<string>Editor</string>
+				<key>CFBundleURLSchemes</key>
+				<array>
+					<string>ShareMedia-$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+				</array>
+			</dict>
+		</array>
 		<key>CADisableMinimumFrameDurationOnPhone</key>
 		<true/>
 		<key>CFBundleDevelopmentRegion</key>

ios/Runner/Runner.entitlements

@@ -4,5 +4,10 @@
 <dict>
 	<key>aps-environment</key>
 	<string>development</string>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.eu.mhsl.marianum.mobile.client.widget</string>
+		<string>group.eu.mhsl.marianum.mobile.client.share</string>
+	</array>
 </dict>
 </plist>

ios/Share Extension/Info.plist

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>AppGroupId</key>
+	<string>$(CUSTOM_GROUP_ID)</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Marianum Fulda</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>PHSupportedMediaTypes</key>
+			<array>
+				<string>Video</string>
+				<string>Image</string>
+			</array>
+			<key>NSExtensionActivationRule</key>
+			<dict>
+				<key>NSExtensionActivationSupportsText</key>
+				<true/>
+				<key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
+				<integer>1</integer>
+				<key>NSExtensionActivationSupportsImageWithMaxCount</key>
+				<integer>10</integer>
+				<key>NSExtensionActivationSupportsMovieWithMaxCount</key>
+				<integer>10</integer>
+				<key>NSExtensionActivationSupportsFileWithMaxCount</key>
+				<integer>10</integer>
+			</dict>
+		</dict>
+		<key>NSExtensionMainStoryboard</key>
+		<string>MainInterface</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.share-services</string>
+	</dict>
+</dict>
+</plist>

ios/Share Extension/MainInterface.storyboard

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="j1y-V4-xli">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="22504"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Share View Controller-->
+        <scene sceneID="ceB-am-kn3">
+            <objects>
+                <viewController id="j1y-V4-xli" customClass="ShareViewController" customModuleProvider="target">
+                    <view key="view" contentMode="scaleToFill" id="wbc-yd-nQP">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <viewLayoutGuide key="safeArea" id="bcg-RR-FT9"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="CzN-xT-EUl" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

ios/Share Extension/SETUP.md

@@ -0,0 +1,93 @@
+# iOS Share Extension — Xcode Setup
+
+Die Quellen unter `ios/Share Extension/` müssen einmalig in Xcode als **Share Extension Target** verdrahtet werden — analog zur `TimetableWidgetExtension`. Erst danach taucht „Marianum Fulda" im System-Share-Sheet auf.
+
+## Schritt 1 — Share-Extension-Target anlegen
+
+1. `ios/Runner.xcworkspace` in Xcode öffnen.
+2. Projekt-Sidebar → `Runner` (Projekt-Root) → **+ Add Target** unten links.
+3. **iOS → Share Extension** wählen.
+4. Eigenschaften:
+   - Product Name: `Share Extension` (mit Leerzeichen, exakt so — der Ordnername und Podfile-Eintrag matchen).
+   - Bundle Identifier: `eu.mhsl.marianum.mobile.client.Share-Extension`.
+   - Language: Swift.
+   - Embed in: Runner.
+5. Beim Activate-Scheme-Dialog auf **Cancel** klicken.
+6. Deployment Target = mind. iOS 12.0 (Plugin-Mindestanforderung).
+
+## Schritt 2 — Vorhandene Quelldateien ins Target ziehen
+
+Xcode legt Dummy-Dateien an. Diese **löschen** (Move to Trash). Dann:
+
+1. Sidebar → Rechtsklick auf den Ordner `Share Extension` → **Add Files to "Runner"…**
+2. Im File-Picker zu `ios/Share Extension/` navigieren und folgende Dateien selektieren:
+   - `ShareViewController.swift`
+   - `Info.plist`
+   - `MainInterface.storyboard`
+   - `Share Extension.entitlements`
+3. **Wichtig**: bei „Add to targets" nur `Share Extension` ankreuzen, **nicht** Runner.
+
+## Schritt 3 — App Group aktivieren
+
+Beide Targets brauchen die App-Group-Berechtigung, damit die Extension geteilte Dateien für die Hauptapp im gemeinsamen Container ablegen kann.
+
+1. **Runner**-Target → **Signing & Capabilities** → **+ Capability** → **App Groups**.
+   - Group-ID hinzufügen: `group.eu.mhsl.marianum.mobile.client.share` (zusätzlich zur bereits existierenden Widget-Group).
+2. Dasselbe für **Share Extension**-Target — mit derselben Group-ID `group.eu.mhsl.marianum.mobile.client.share`.
+
+Im Apple-Developer-Portal muss diese App-Group bei beiden App-IDs eingetragen sein, sonst schlägt das Provisioning fehl.
+
+## Schritt 4 — User-Defined Build Setting `CUSTOM_GROUP_ID`
+
+Beide Targets brauchen das User-Defined Setting, das in `Runner/Info.plist` und `Share Extension/Info.plist` als `$(CUSTOM_GROUP_ID)` referenziert wird.
+
+1. **Runner** → Build Settings → `+` (oben links) → **Add User-Defined Setting**.
+   - Name: `CUSTOM_GROUP_ID`
+   - Wert: `group.eu.mhsl.marianum.mobile.client.share`
+2. Dasselbe für **Share Extension**-Target.
+
+## Schritt 5 — Entitlements verlinken
+
+1. **Runner** → Build Settings → `CODE_SIGN_ENTITLEMENTS` zeigt bereits auf `Runner/Runner.entitlements` (jetzt mit beiden Groups).
+2. **Share Extension** → Build Settings → `CODE_SIGN_ENTITLEMENTS` → auf `Share Extension/Share Extension.entitlements` setzen.
+
+## Schritt 6 — Info.plist-Pfad
+
+**Share Extension** → Build Settings → `INFOPLIST_FILE` → auf `Share Extension/Info.plist` setzen.
+
+## Schritt 7 — Build Phases reorder
+
+Damit das Plugin-Modul vom Extension-Target gefunden wird:
+
+1. **Runner**-Target → **Build Phases**.
+2. `Embed Foundation Extensions` per Drag-and-Drop **vor** `Thin Binary` ziehen.
+
+## Schritt 8 — Pods installieren
+
+```bash
+cd ios && pod install
+```
+
+Der Podfile-Eintrag (`target 'Share Extension' do inherit! :search_paths end`) ist bereits vorhanden.
+
+## Schritt 9 — Build & Run
+
+1. Scheme `Runner` wählen → Run auf Device oder Simulator (≥ iOS 12).
+2. Foto in der Fotos-App auswählen → Teilen → „Marianum Fulda" sollte erscheinen.
+3. Auswahl → App öffnet sich, ShareTargetPage erscheint.
+
+## Troubleshooting
+
+- **Error: No such module 'receive_sharing_intent'**
+  → Schritt 7 (Build Phases reorder) wurde übersprungen.
+- **Error: ‚Frameworks' not allowed in extension**
+  → In Build Settings der Share Extension `Other Linker Flags` und `Framework Search Paths` leeren (nur die geerbten Pod-Pfade behalten).
+- **Share-Sheet zeigt App nicht an**
+  → `NSExtensionActivationRule`-Limits in `Share Extension/Info.plist` zu klein? Werte testweise erhöhen. Außerdem: App muss **mindestens einmal nach Install** geöffnet worden sein, sonst wird die Extension von iOS nicht registriert.
+- **Files kommen mit `nil` Pfad an**
+  → App-Group nicht konsistent. Prüfen, dass `CUSTOM_GROUP_ID` in beiden Targets identisch ist und die Entitlement-Files dieselbe Group enthalten.
+
+## Was am Mac noch zu tun ist
+
+- Schritte 1–8 oben (~15 Min).
+- Auf physischem iPhone testen — Simulator-Share-Sheet ist eingeschränkt.

ios/Share Extension/Share Extension.entitlements

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.eu.mhsl.marianum.mobile.client.share</string>
+	</array>
+</dict>
+</plist>

ios/Share Extension/ShareViewController.swift

@@ -0,0 +1,8 @@
+import UIKit
+import receive_sharing_intent
+
+class ShareViewController: RSIShareViewController {
+    override func shouldAutoRedirect() -> Bool {
+        return true
+    }
+}

ios/TimetableWidgetExtension/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

ios/TimetableWidgetExtension/Assets.xcassets/marianum_m.imageset/Contents.json

@@ -0,0 +1,16 @@
+{
+  "images" : [
+    {
+      "filename" : "marianum_m_white.svg",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true,
+    "template-rendering-intent" : "template"
+  }
+}

ios/TimetableWidgetExtension/Assets.xcassets/marianum_m.imageset/marianum_m_white.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="70.000168mm"
+   height="82.227348mm"
+   viewBox="0 0 70.000168 82.227348"
+   version="1.1"
+   id="svg1"
+   xml:space="preserve"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"><defs
+     id="defs1" /><g
+     id="g1"
+     transform="matrix(0.26458333,0,0,0.26458334,107.44411,-80.482198)"><g
+       id="group-R5"
+       transform="translate(-749.41293,290.52252)"><path
+         id="path3"
+         d="m 3499.67,4594.33 c -16.43,-106.19 -29.71,-199.97 -43.79,-293.49 86.83,-19 138.5,-27.61 223.38,-43.82 63.81,-12.18 175.24,-20.4 179.64,-83.23 6.46,-92.69 -124.69,-55.41 -188.38,-43.81 -84.33,15.36 -159.13,28.84 -232.2,43.81 -13.68,-60.72 -26.83,-118.68 -39.43,-179.61 -36.76,-178.32 -73.67,-368.16 -105.11,-551.97 18.09,25.66 30.84,42.72 43.8,65.7 66.7,118.26 140.39,245.04 227.76,354.83 33.49,42.05 76.86,94.81 118.31,113.91 98.42,45.36 166.68,-22.2 170.87,-118.28 3.68,-85.28 -23.09,-181.17 -35.08,-275.99 -12.4,-98.19 -22.89,-194.93 -35.03,-275.98 72.44,102.69 147.93,269.64 240.95,381.12 27.51,33 73.55,80.61 118.27,87.62 218.76,34.33 126.58,-312.17 127.05,-473.13 0.4,-144.9 44.01,-255.37 175.21,-271.59 43.02,-5.31 105.84,11.16 112.7,-26.34 8.67,-47.38 -78.15,-60.52 -125.84,-61.28 -291.34,-4.51 -322.06,262.33 -311.01,573.88 -19.85,-18.57 -35.71,-47.53 -52.57,-74.47 -97.59,-155.88 -203.95,-327.22 -297.92,-503.79 -25.93,-48.79 -53.68,-114.7 -135.8,-83.23 -17.27,6.63 -48.25,44.39 -52.56,56.96 -19.58,57.19 1.55,137.42 8.76,205.89 21.54,203.72 57.81,389.09 78.87,587.01 -26.3,0.51 -43.93,-30.07 -56.96,-48.2 -46.9,-65.27 -86.02,-140.76 -127.04,-214.64 -52.84,-95.15 -108.23,-192.84 -157.71,-293.52 -75.25,-153.09 -188.6,-501.89 -242.12,-678.81 -8.67,-28.67 -17.7,-58.08 -26.3,-87.64 -7.48,-25.72 -10.39,-57.68 -35.05,-74.46 -100.02,18.93 -89.71,104.89 -70.09,205.9 47.35,243.43 170.89,706.45 211.48,946.04 -72.97,-70.97 -153.99,-207.41 -289.14,-236.55 -136.47,-29.44 -217.95,47.68 -271.6,122.66 -17.14,23.96 -41.43,49.54 -26.29,78.84 83.96,35.51 113.37,-65.2 197.15,-74.47 22.65,-2.5 54.56,2.4 74.46,8.78 132.4,42.34 237.57,218.76 297.87,346.07 74.16,156.45 125.32,330.5 148.95,490.64 -65.71,11.4 -142.96,22.15 -219.25,36.52 -109.8,20.72 -158.81,10.75 -201.29,59.86 9.15,41.95 41.41,60.8 70.1,83.24 126.26,-16.84 252.45,-33.77 372.36,-56.97 20.43,89.25 51.98,218.51 74.45,311.05 40.53,26.02 88.88,-8.43 105.17,-35.06"
+         style="fill:#d3d2d2;fill-opacity:1;fill-rule:evenodd;stroke:none"
+         transform="matrix(0.13333333,0,0,-0.13333333,0,632.14667)" /></g></g></svg>

ios/TimetableWidgetExtension/Info.plist

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Marianum Stundenplan</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.widgetkit-extension</string>
+	</dict>
+</dict>
+</plist>

ios/TimetableWidgetExtension/MarianumWatermark.swift

@@ -0,0 +1,28 @@
+import SwiftUI
+
+/// Marianum-M peeking out of the bottom-right corner. Sized to the longer
+/// widget edge so it scales with resize; offset nudges a sliver behind the
+/// edge.
+struct MarianumWatermark: View {
+    @Environment(\.colorScheme) private var colorScheme
+
+    var body: some View {
+        GeometryReader { geo in
+            let markSize = min(400, max(160, max(geo.size.width, geo.size.height) * 0.8))
+            let offsetX = markSize * 0.18
+            let offsetY = markSize * 0.18
+            ZStack(alignment: .bottomTrailing) {
+                Color.clear
+                Image("marianum_m")
+                    .resizable()
+                    .renderingMode(.template)
+                    .aspectRatio(contentMode: .fit)
+                    .foregroundStyle(.primary)
+                    .frame(width: markSize, height: markSize)
+                    .opacity(colorScheme == .dark ? 0.025 : 0.014)
+                    .offset(x: offsetX, y: offsetY)
+            }
+        }
+        .clipped()
+    }
+}

ios/TimetableWidgetExtension/SETUP.md

@@ -0,0 +1,72 @@
+# iOS Widget Extension — Xcode Setup
+
+Die Swift-Quellen unter `ios/TimetableWidgetExtension/` müssen einmalig in Xcode als **Widget Extension Target** verdrahtet werden — ohne diesen Schritt bleibt der Code unkompiliert.
+
+## Schritt 1 — Widget-Extension-Target anlegen
+
+1. `ios/Runner.xcworkspace` in Xcode öffnen.
+2. Projekt-Sidebar → `Runner` (Projekt-Root) → **+ Add Target** unten links.
+3. **iOS → Widget Extension** wählen.
+4. Eigenschaften:
+   - Product Name: `TimetableWidgetExtension`
+   - Bundle Identifier: `eu.mhsl.marianum.mobile.client.TimetableWidgetExtension`
+   - Language: Swift
+   - Include Configuration Intent: **OFF** (StaticConfiguration reicht)
+   - Embed in: Runner
+5. Beim Activate-Scheme-Dialog auf **Cancel** klicken.
+
+## Schritt 2 — Vorhandene Quelldateien ins Target ziehen
+
+Xcode hat zunächst Dummy-Dateien (`TimetableWidgetExtension.swift`, `TimetableWidgetExtensionBundle.swift`) angelegt. Diese **löschen** (Move to Trash). Dann:
+
+1. Sidebar → Rechtsklick auf den Ordner `TimetableWidgetExtension` → **Add Files to "Runner"…**
+2. Im File-Picker zu `ios/TimetableWidgetExtension/` navigieren und alle `.swift`-Dateien, die `Info.plist`, `TimetableWidgetExtension.entitlements` **und den `Assets.xcassets`-Ordner** selektieren (mit `marianum_m`-Asset darin — gleicher Asset-Name wie auf Android-Seite).
+3. **Wichtig**: bei „Add to targets" nur `TimetableWidgetExtension` ankreuzen, **nicht** Runner.
+
+## Schritt 3 — App Group aktivieren
+
+Beide Targets brauchen die App-Group-Berechtigung, damit Hauptapp und Widget über `UserDefaults(suiteName:)` schreiben/lesen können.
+
+1. **Runner**-Target → **Signing & Capabilities** → **+ Capability** → **App Groups**.
+   - Group-ID hinzufügen: `group.eu.mhsl.marianum.mobile.client.widget`
+2. Dasselbe für **TimetableWidgetExtension** — mit derselben Group-ID.
+
+Im Apple-Developer-Portal muss die App-Group bei beiden App-IDs eingetragen sein, sonst schlägt das Provisioning fehl.
+
+## Schritt 4 — Entitlements verlinken
+
+1. **Runner** → Build Settings → `CODE_SIGN_ENTITLEMENTS` sollte bereits auf `Runner/Runner.entitlements` zeigen.
+2. **TimetableWidgetExtension** → Build Settings → `CODE_SIGN_ENTITLEMENTS` → auf `TimetableWidgetExtension/TimetableWidgetExtension.entitlements` setzen.
+
+## Schritt 5 — Info.plist + Deployment Target
+
+1. **TimetableWidgetExtension** → Build Settings → `INFOPLIST_FILE` → auf `TimetableWidgetExtension/Info.plist` setzen.
+2. Build Settings → `IPHONEOS_DEPLOYMENT_TARGET` ≥ 16.0 (Code gated `.containerBackground` mit `if #available(iOS 17, *)`, läuft also auch auf 16).
+
+## Schritt 6 — Build & Run
+
+- Scheme `Runner` (nicht das Widget-Scheme) wählen → Run.
+- Auf Home-Screen langes Drücken → Widget hinzufügen → "Marianum · Heute" / "Marianum · Woche".
+- Widget-Tap öffnet die App im zuletzt sichtbaren Tab. Eine Tab-Navigation auf den Stundenplan ist bewusst nicht implementiert (Android nutzt Intent-Extras, iOS würde dafür ein URL-Scheme oder AppIntent brauchen — beides bewusst ausgespart).
+
+## Troubleshooting
+
+- **Widget zeigt „Lade…"** auch nach Refresh: App-Group greift nicht. Prüfen, ob beide Targets dieselbe Group-ID haben und das Provisioning aktualisiert wurde.
+- **Stale-Daten nach Logout**: `WidgetSync.clear()` schreibt `widget_data_logged_in_v1 = false`; Widget zeigt dann den Login-Placeholder.
+- **Lessons um 1–2 Stunden verschoben**: Date-Parser-Bug. Sollte gefixt sein in `WidgetData.swift::parseDartDate` — verifizieren, dass die ISO-8601-Strings ohne Z-Suffix als `TimeZone.current` geparsed werden.
+- **App-Store-Submit später**: `Runner.entitlements` `aps-environment` von `development` auf `production` umbiegen.
+
+## Was bereits im Repo erledigt ist
+
+- Alle Swift-Quellen, Info.plist, Entitlements liegen unter `ios/TimetableWidgetExtension/`.
+- App-Group-ID konsistent zwischen Dart (`WidgetSync.iosAppGroupId`), Swift (`WidgetDataKey.appGroupId`) und der Entitlements-Datei.
+- `home_widget`-Plugin auf der Dart-Seite konfiguriert; ruft `HomeWidget.setAppGroupId` beim ersten Sync.
+- `containerBackground` für iOS 17+ gegated, fällt auf iOS 16 sauber zurück.
+- Date-Parser fixt das fehlende Z-Suffix (Dart schreibt lokale Zeit ohne TZ-Marker).
+
+## Was am Mac noch zu tun ist
+
+- Schritte 1–5 oben in Xcode durchklicken (10–15 Min).
+- `flutter pub get` + `cd ios && pod install`.
+- Auf physischem Gerät oder iOS-Simulator (≥ 16.0) bauen.
+- Widget aufs Home-Screen ziehen, prüfen dass Lesson-Zeiten korrekt rendern.

ios/TimetableWidgetExtension/TimetableDayView.swift

@@ -0,0 +1,425 @@
+import SwiftUI
+import WidgetKit
+
+// Layout constants — must mirror WidgetRenderer.kt on Android, otherwise
+// the platforms drift apart on the same widget size.
+let FALLBACK_VIRTUAL_MINUTES = 11 * 60
+let MIN_HOUR_HEIGHT: CGFloat = 18
+let MAX_HOUR_HEIGHT: CGFloat = 72
+let MIN_BLOCK_HEIGHT: CGFloat = 16
+let LESSON_GAP: CGFloat = 1.5
+
+func realMinutesToVirtual(_ realMin: Int, periods: [WidgetPeriod]) -> CGFloat {
+    guard !periods.isEmpty else { return CGFloat(realMin) }
+    for p in periods where realMin >= p.startMinutes && realMin <= p.endMinutes {
+        return CGFloat(p.virtualStartMinutes + (realMin - p.startMinutes))
+    }
+    let first = periods.first!
+    if realMin < first.startMinutes {
+        return CGFloat(realMin - first.startMinutes + first.virtualStartMinutes)
+    }
+    let last = periods.last!
+    if realMin > last.endMinutes {
+        return CGFloat(last.virtualEndMinutes + (realMin - last.endMinutes))
+    }
+    var prev = first
+    for i in 1..<periods.count {
+        let curr = periods[i]
+        if realMin > prev.endMinutes && realMin < curr.startMinutes {
+            let gap = curr.startMinutes - prev.endMinutes
+            let virtualGap = curr.virtualStartMinutes - prev.virtualEndMinutes
+            if gap > 0 {
+                return CGFloat(prev.virtualEndMinutes) +
+                    CGFloat(realMin - prev.endMinutes) * CGFloat(virtualGap) / CGFloat(gap)
+            }
+            return CGFloat(curr.virtualStartMinutes)
+        }
+        prev = curr
+    }
+    return 0
+}
+
+let BLOCK_SHOW_ROOM_MIN: CGFloat = 18
+let BLOCK_SHOW_TEACHER_SEPARATE_MIN: CGFloat = 30
+
+let MIN_SUBJECT_FONT: CGFloat = 9
+let MAX_SUBJECT_FONT: CGFloat = 14
+let MIN_SECONDARY_FONT: CGFloat = 7
+
+func subjectFont(forHourHeight hourHeight: CGFloat) -> CGFloat {
+    let t = max(0, min(1, (hourHeight - MIN_HOUR_HEIGHT) / (MAX_HOUR_HEIGHT - MIN_HOUR_HEIGHT)))
+    return MIN_SUBJECT_FONT + t * (MAX_SUBJECT_FONT - MIN_SUBJECT_FONT)
+}
+
+struct TimetableDayView: View {
+    let entry: TimetableEntry
+
+    var body: some View {
+        ZStack {
+            if !entry.isLoggedIn {
+                placeholder("Bitte einloggen, um den Stundenplan zu laden")
+            } else if let data = entry.data {
+                content(data: data)
+            } else {
+                placeholder("Lade…")
+            }
+        }
+        .background(MarianumWatermark())
+        .widgetThemeOverride(entry.themeMode)
+    }
+
+    @ViewBuilder
+    private func content(data: WidgetTimetableData) -> some View {
+        VStack(alignment: .leading, spacing: 6) {
+            header(data: data)
+            if data.isHoliday {
+                emptyState(text: data.holidayName ?? "Ferien")
+            } else if data.lessons.isEmpty {
+                emptyState(text: "Keine Stunden")
+            } else {
+                GeometryReader { geo in
+                    let totalMin = CGFloat(data.periods.last?.virtualEndMinutes ?? FALLBACK_VIRTUAL_MINUTES)
+                    TimeGridView(
+                        lessons: data.lessons,
+                        periods: data.periods,
+                        hourHeight: max(
+                            MIN_HOUR_HEIGHT,
+                            min(MAX_HOUR_HEIGHT, geo.size.height / max(totalMin, 60) * 60)
+                        ),
+                        showRoom: true,
+                        showTeacher: true,
+                        showTimeLabels: true
+                    )
+                }
+            }
+        }
+    }
+
+    private func header(data: WidgetTimetableData) -> some View {
+        HStack {
+            Text(dayLabel(for: data.anchorDate))
+                .font(.system(size: 14, weight: .semibold))
+                .foregroundStyle(.primary)
+            Spacer()
+            Text("Stand: \(freshnessLabel(for: data.fetchedAt))")
+                .font(.system(size: 10))
+                .foregroundStyle(.secondary)
+        }
+    }
+
+    private func emptyState(text: String) -> some View {
+        VStack {
+            Spacer()
+            Text(text)
+                .font(.caption)
+                .foregroundStyle(.secondary)
+            Spacer()
+        }
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
+    }
+
+    private func placeholder(_ message: String) -> some View {
+        VStack(spacing: 4) {
+            Text("Marianum Stundenplan")
+                .font(.system(size: 14, weight: .semibold))
+            Text(message)
+                .font(.caption)
+                .foregroundStyle(.secondary)
+                .multilineTextAlignment(.center)
+        }
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
+    }
+}
+
+struct TimeGridView: View {
+    let lessons: [WidgetLesson]
+    let periods: [WidgetPeriod]
+    let hourHeight: CGFloat
+    let showRoom: Bool
+    let showTeacher: Bool
+    let showTimeLabels: Bool
+    /// Week-widget passes 3 for narrow columns; day-widget keeps 7.
+    var horizontalPadding: CGFloat = 7
+
+    private var totalVirtualMinutes: Int {
+        periods.last?.virtualEndMinutes ?? FALLBACK_VIRTUAL_MINUTES
+    }
+
+    private var totalHeight: CGFloat {
+        CGFloat(totalVirtualMinutes) * hourHeight / 60.0
+    }
+
+    /// Below this per-hour height the two-line label collapses to a single
+    /// period number — time + number overlap otherwise.
+    private var compactLabels: Bool { hourHeight < 26 }
+
+    var body: some View {
+        HStack(alignment: .top, spacing: 0) {
+            if showTimeLabels {
+                timeLabelsColumn
+                    .frame(width: 32, alignment: .topTrailing)
+                Rectangle()
+                    .fill(Color.primary.opacity(0.13))
+                    .frame(width: 1)
+            }
+            ZStack(alignment: .top) {
+                gridLines
+                breakBlocks
+                ForEach(lessons.indices, id: \.self) { idx in
+                    lessonBlock(lessons[idx])
+                }
+            }
+            .frame(maxWidth: .infinity, minHeight: totalHeight, alignment: .top)
+        }
+    }
+
+    private var timeLabelsColumn: some View {
+        ZStack(alignment: .topTrailing) {
+            // Hour rules continue through the time-label column so it reads
+            // as a real table column rather than a free-floating tick list.
+            // Hour rules extend through the time-label column so it reads
+            // as a table column rather than a free-floating tick list.
+            ForEach(periodBoundaries(periods), id: \.self) { virtualMin in
+                Rectangle()
+                    .fill(Color.primary.opacity(0.08))
+                    .frame(height: 1)
+                    .offset(y: CGFloat(virtualMin) * hourHeight / 60.0)
+            }
+            ForEach(periods, id: \.startMinutes) { period in
+                VStack(alignment: .trailing, spacing: -2) {
+                    if compactLabels {
+                        Text("\(period.name).")
+                            .font(.system(size: 9, weight: .bold))
+                            .foregroundStyle(.primary)
+                            .lineLimit(1)
+                    } else {
+                        Text(formatHm(period.startMinutes))
+                            .font(.system(size: 9))
+                            .foregroundStyle(.primary)
+                            .lineLimit(1)
+                        Text("\(period.name).")
+                            .font(.system(size: 7, weight: .bold))
+                            .foregroundStyle(.secondary)
+                            .lineLimit(1)
+                    }
+                }
+                .padding(.trailing, 4)
+                .offset(y: CGFloat(period.virtualStartMinutes) * hourHeight / 60.0)
+            }
+        }
+        .frame(height: totalHeight, alignment: .topTrailing)
+    }
+
+    private var gridLines: some View {
+        ZStack(alignment: .top) {
+            // Hour rules continue through the time-label column so it reads
+            // as a real table column rather than a free-floating tick list.
+            ForEach(periodBoundaries(periods), id: \.self) { virtualMin in
+                Rectangle()
+                    .fill(Color.primary.opacity(0.08))
+                    .frame(height: 1)
+                    .offset(y: CGFloat(virtualMin) * hourHeight / 60.0)
+            }
+        }
+        .frame(height: totalHeight)
+    }
+
+    private var breakBlocks: some View {
+        ZStack(alignment: .top) {
+            ForEach(0..<max(0, periods.count - 1), id: \.self) { i in
+                let curr = periods[i]
+                let next = periods[i + 1]
+                let virtualGap = next.virtualStartMinutes - curr.virtualEndMinutes
+                if virtualGap > 0 {
+                    Rectangle()
+                        .fill(Color.primary.opacity(0.03))
+                        .frame(height: CGFloat(virtualGap) * hourHeight / 60.0)
+                        .padding(.horizontal, 1)
+                        .offset(y: CGFloat(curr.virtualEndMinutes) * hourHeight / 60.0)
+                }
+            }
+        }
+        .frame(height: totalHeight)
+    }
+
+    private func formatHm(_ minutes: Int) -> String {
+        String(format: "%02d:%02d", minutes / 60, minutes % 60)
+    }
+
+    @ViewBuilder
+    private func lessonBlock(_ lesson: WidgetLesson) -> some View {
+        let cal = Calendar.current
+        let comps = cal.dateComponents([.hour, .minute], from: lesson.start)
+        let startMinutes = (comps.hour ?? 0) * 60 + (comps.minute ?? 0)
+        let durationMinutes = max(15, Int(lesson.end.timeIntervalSince(lesson.start) / 60))
+        let virtualStart = realMinutesToVirtual(startMinutes, periods: periods)
+        let virtualEnd = realMinutesToVirtual(startMinutes + durationMinutes, periods: periods)
+
+        if virtualEnd > virtualStart {
+            let top = virtualStart * hourHeight / 60.0 + LESSON_GAP / 2
+            let height = max(
+                MIN_BLOCK_HEIGHT,
+                (virtualEnd - virtualStart) * hourHeight / 60.0 - LESSON_GAP
+            )
+            let subjectSize = subjectFont(forHourHeight: hourHeight)
+            let secondarySize = max(MIN_SECONDARY_FONT, subjectSize - 2)
+            let room = lesson.room
+            let teacher = lesson.teacher ?? lesson.originalTeacher
+            let hasSecondary = (room?.isEmpty == false) || (teacher?.isEmpty == false)
+            HStack(alignment: .top, spacing: 4) {
+                Text(subjectLabel(lesson))
+                    .font(.system(size: subjectSize, weight: .semibold))
+                    .foregroundStyle(.white)
+                    .lineLimit(hasSecondary ? 1 : 2)
+                    .minimumScaleFactor(0.5)
+                if hasSecondary {
+                    Spacer(minLength: 0)
+                    VStack(alignment: .trailing, spacing: -1) {
+                        if showRoom && height >= BLOCK_SHOW_ROOM_MIN {
+                            if let room, !room.isEmpty {
+                                Text(room)
+                                    .font(.system(size: secondarySize))
+                                    .foregroundStyle(.white.opacity(0.85))
+                                    .lineLimit(1)
+                                    .minimumScaleFactor(0.5)
+                            }
+                            if showTeacher,
+                               height >= BLOCK_SHOW_TEACHER_SEPARATE_MIN,
+                               let teacher,
+                               !teacher.isEmpty {
+                                Text(teacher)
+                                    .font(.system(size: secondarySize))
+                                    .foregroundStyle(.white.opacity(0.7))
+                                    .lineLimit(1)
+                                    .minimumScaleFactor(0.5)
+                            }
+                        }
+                    }
+                }
+            }
+            .padding(.horizontal, horizontalPadding)
+            .padding(.vertical, 3)
+            .frame(maxWidth: .infinity, alignment: .topLeading)
+            .frame(height: height, alignment: .topLeading)
+            .background(blockColor(lesson))
+            .cornerRadius(6)
+            .overlay(alignment: .bottomLeading) {
+                // Separate fixed-size badge so the +N hint stays readable
+                // when the subject autoshrinks on narrow tiles.
+                if let count = lesson.siblingCount, count > 0 {
+                    Text("+\(count)")
+                        .font(.system(size: 12, weight: .bold))
+                        .foregroundStyle(.white)
+                        .padding(.leading, horizontalPadding)
+                        .padding(.bottom, 2)
+                }
+            }
+            .overlay {
+                // CrossPainter parity: clip cross to the rounded shape so
+                // the diagonals don't bleed past the corners.
+                if lesson.status == .cancelled {
+                    ZStack {
+                        RoundedRectangle(cornerRadius: 6)
+                            .stroke(Color.red.opacity(0.78), lineWidth: 1.5)
+                        GeometryReader { geo in
+                            Path { p in
+                                p.move(to: .zero)
+                                p.addLine(to: CGPoint(x: geo.size.width, y: geo.size.height))
+                                p.move(to: CGPoint(x: geo.size.width, y: 0))
+                                p.addLine(to: CGPoint(x: 0, y: geo.size.height))
+                            }
+                            .stroke(Color.red.opacity(0.78), lineWidth: 3)
+                        }
+                    }
+                    .clipShape(RoundedRectangle(cornerRadius: 6))
+                }
+            }
+            .padding(.horizontal, showRoom ? 2 : 1)
+            .offset(y: top)
+        }
+    }
+
+    private func subjectLabel(_ lesson: WidgetLesson) -> String {
+        !lesson.subjectShort.isEmpty
+            ? lesson.subjectShort
+            : (lesson.subjectLong ?? "—")
+    }
+
+    /// Mirrors lesson_color.dart + custom_event_colors.dart so the widget
+    /// matches the in-app calendar exactly.
+    private func blockColor(_ lesson: WidgetLesson) -> Color {
+        if lesson.status == .event, let custom = lesson.customColor {
+            switch custom {
+            case "orange": return Color(red: 239/255.0, green: 108/255.0, blue: 0/255.0)
+            case "red": return Color(red: 153/255.0, green: 51/255.0, blue: 51/255.0)
+            case "green": return Color(red: 76/255.0, green: 175/255.0, blue: 80/255.0)
+            case "blue": return Color(red: 33/255.0, green: 150/255.0, blue: 243/255.0)
+            default: break
+            }
+        }
+        switch lesson.status {
+        case .regular, .past: return Color(red: 153/255.0, green: 51/255.0, blue: 51/255.0)
+        case .ongoing: return Color(red: 200/255.0, green: 51/255.0, blue: 51/255.0)
+        case .cancelled: return .black
+        case .irregular: return Color(red: 143/255.0, green: 25/255.0, blue: 179/255.0)
+        case .teacherChanged: return Color(red: 41/255.0, green: 99/255.0, blue: 155/255.0)
+        case .event: return Color(red: 239/255.0, green: 108/255.0, blue: 0/255.0)
+        }
+    }
+}
+
+/// Period boundaries deduped: adjacent periods share a line, periods on
+/// either side of a break get their own (bracketing the break block).
+func periodBoundaries(_ periods: [WidgetPeriod]) -> [Int] {
+    var seen = Set<Int>()
+    var result: [Int] = []
+    for p in periods {
+        for v in [p.virtualStartMinutes, p.virtualEndMinutes] {
+            if seen.insert(v).inserted { result.append(v) }
+        }
+    }
+    return result.sorted()
+}
+
+func dayLabel(for date: Date) -> String {
+    let cal = Calendar.current
+    let today = cal.startOfDay(for: Date())
+    let anchor = cal.startOfDay(for: date)
+    if anchor == today {
+        return "Heute · \(shortDate(date))"
+    }
+    if let tomorrow = cal.date(byAdding: .day, value: 1, to: today), anchor == tomorrow {
+        return "Morgen · \(shortDate(date))"
+    }
+    let formatter = DateFormatter()
+    formatter.locale = Locale(identifier: "de_DE")
+    formatter.dateFormat = "EEEE · dd.MM."
+    return formatter.string(from: date)
+}
+
+func shortDate(_ date: Date) -> String {
+    let f = DateFormatter()
+    f.locale = Locale(identifier: "de_DE")
+    f.dateFormat = "dd.MM."
+    return f.string(from: date)
+}
+
+func freshnessLabel(for fetchedAt: Date) -> String {
+    let cal = Calendar.current
+    let today = cal.startOfDay(for: Date())
+    let fetchedDay = cal.startOfDay(for: fetchedAt)
+    let timeFmt = DateFormatter()
+    timeFmt.locale = Locale(identifier: "de_DE")
+    timeFmt.dateFormat = "HH:mm"
+    if fetchedDay == today {
+        return timeFmt.string(from: fetchedAt)
+    }
+    if let yesterday = cal.date(byAdding: .day, value: -1, to: today),
+       fetchedDay == yesterday {
+        return "gestern \(timeFmt.string(from: fetchedAt))"
+    }
+    let dateTimeFmt = DateFormatter()
+    dateTimeFmt.locale = Locale(identifier: "de_DE")
+    dateTimeFmt.dateFormat = "dd.MM. HH:mm"
+    return dateTimeFmt.string(from: fetchedAt)
+}

ios/TimetableWidgetExtension/TimetableWeekView.swift

@@ -0,0 +1,160 @@
+import SwiftUI
+import WidgetKit
+
+struct TimetableWeekView: View {
+    let entry: TimetableEntry
+
+    var body: some View {
+        ZStack {
+            if !entry.isLoggedIn {
+                placeholder("Bitte einloggen, um den Stundenplan zu laden")
+            } else if let data = entry.data {
+                content(data: data)
+            } else {
+                placeholder("Lade…")
+            }
+        }
+        .background(MarianumWatermark())
+        .widgetThemeOverride(entry.themeMode)
+    }
+
+    @ViewBuilder
+    private func content(data: WidgetTimetableData) -> some View {
+        VStack(alignment: .leading, spacing: 4) {
+            header(data: data)
+            dayHeaderRow(data: data)
+            GeometryReader { geo in
+                let totalMin = CGFloat(data.periods.last?.virtualEndMinutes ?? FALLBACK_VIRTUAL_MINUTES)
+                let hourHeight = max(
+                    MIN_HOUR_HEIGHT,
+                    min(MAX_HOUR_HEIGHT, geo.size.height / max(totalMin, 60) * 60)
+                )
+                let dayColumnWidth = (geo.size.width - 28 - 4) / 5
+                let subjectOnly = dayColumnWidth < 70
+                HStack(alignment: .top, spacing: 0) {
+                    timeLabelsColumn(hourHeight: hourHeight, periods: data.periods)
+                        .frame(width: 28, alignment: .topTrailing)
+                    columnDivider
+                    ForEach(0..<5, id: \.self) { offset in
+                        column(
+                            data: data,
+                            offset: offset,
+                            hourHeight: hourHeight,
+                            subjectOnly: subjectOnly
+                        )
+                        .frame(maxWidth: .infinity)
+                        if offset < 4 { columnDivider }
+                    }
+                }
+            }
+        }
+    }
+
+    private var columnDivider: some View {
+        Rectangle()
+            .fill(Color.primary.opacity(0.13))
+            .frame(width: 1)
+    }
+
+    private func header(data: WidgetTimetableData) -> some View {
+        let cal = Calendar.current
+        let week = cal.component(.weekOfYear, from: data.anchorDate)
+        let endDate = cal.date(byAdding: .day, value: 4, to: data.anchorDate) ?? data.anchorDate
+        return HStack {
+            Text("KW \(week) · \(shortDate(data.anchorDate))–\(shortDate(endDate))")
+                .font(.system(size: 13, weight: .semibold))
+                .foregroundStyle(.primary)
+            Spacer()
+            Text("Stand: \(freshnessLabel(for: data.fetchedAt))")
+                .font(.system(size: 10))
+                .foregroundStyle(.secondary)
+        }
+    }
+
+    private func dayHeaderRow(data: WidgetTimetableData) -> some View {
+        let cal = Calendar.current
+        return HStack(spacing: 0) {
+            Spacer().frame(width: 28)
+            columnDivider
+            ForEach(0..<5, id: \.self) { offset in
+                let day = cal.date(byAdding: .day, value: offset, to: data.anchorDate) ?? data.anchorDate
+                VStack(spacing: 0) {
+                    Text(weekday(for: day))
+                        .font(.system(size: 11, weight: .bold))
+                        .foregroundStyle(.primary)
+                    Text(shortDate(day))
+                        .font(.system(size: 9))
+                        .foregroundStyle(.secondary)
+                }
+                .frame(maxWidth: .infinity)
+                if offset < 4 { columnDivider }
+            }
+        }
+    }
+
+    private func timeLabelsColumn(hourHeight: CGFloat, periods: [WidgetPeriod]) -> some View {
+        let totalMin = periods.last?.virtualEndMinutes ?? FALLBACK_VIRTUAL_MINUTES
+        let totalHeight = CGFloat(totalMin) * hourHeight / 60.0
+        return ZStack(alignment: .topTrailing) {
+            ForEach(periodBoundaries(periods), id: \.self) { virtualMin in
+                Rectangle()
+                    .fill(Color.primary.opacity(0.08))
+                    .frame(height: 1)
+                    .offset(y: CGFloat(virtualMin) * hourHeight / 60.0)
+            }
+            ForEach(periods, id: \.startMinutes) { period in
+                VStack(alignment: .trailing, spacing: -2) {
+                    Text(String(format: "%02d:%02d", period.startMinutes / 60, period.startMinutes % 60))
+                        .font(.system(size: 8))
+                        .foregroundStyle(.primary)
+                        .lineLimit(1)
+                    Text("\(period.name).")
+                        .font(.system(size: 6, weight: .bold))
+                        .foregroundStyle(.secondary)
+                        .lineLimit(1)
+                }
+                .offset(y: CGFloat(period.virtualStartMinutes) * hourHeight / 60.0)
+            }
+        }
+        .frame(height: totalHeight, alignment: .topTrailing)
+    }
+
+    private func column(
+        data: WidgetTimetableData,
+        offset: Int,
+        hourHeight: CGFloat,
+        subjectOnly: Bool
+    ) -> some View {
+        let cal = Calendar.current
+        let day = cal.date(byAdding: .day, value: offset, to: data.anchorDate) ?? data.anchorDate
+        let lessonsForDay = data.lessons.filter { cal.isDate($0.start, inSameDayAs: day) }
+        return TimeGridView(
+            lessons: lessonsForDay,
+            periods: data.periods,
+            hourHeight: hourHeight,
+            showRoom: !subjectOnly,
+            showTeacher: !subjectOnly,
+            showTimeLabels: false,
+            horizontalPadding: 3
+        )
+    }
+
+    private func weekday(for date: Date) -> String {
+        let f = DateFormatter()
+        f.locale = Locale(identifier: "de_DE")
+        f.dateFormat = "EE"
+        return f.string(from: date)
+    }
+
+    private func placeholder(_ message: String) -> some View {
+        VStack(spacing: 4) {
+            Text("Marianum Stundenplan")
+                .font(.system(size: 14, weight: .semibold))
+            Text(message)
+                .font(.caption)
+                .foregroundStyle(.secondary)
+                .multilineTextAlignment(.center)
+        }
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
+    }
+}

ios/TimetableWidgetExtension/TimetableWidgetExtension.entitlements

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.eu.mhsl.marianum.mobile.client.widget</string>
+	</array>
+</dict>
+</plist>

ios/TimetableWidgetExtension/TimetableWidgetExtension.swift

@@ -0,0 +1,138 @@
+import SwiftUI
+import WidgetKit
+
+@main
+struct MarianumWidgetBundle: WidgetBundle {
+    var body: some Widget {
+        TimetableDayWidget()
+        TimetableWeekWidget()
+    }
+}
+
+// MARK: - Day widget
+
+struct TimetableDayWidget: Widget {
+    let kind: String = "TimetableDayWidget"
+
+    var body: some WidgetConfiguration {
+        StaticConfiguration(kind: kind, provider: TimetableDayProvider()) { entry in
+            TimetableDayView(entry: entry).widgetContainerBackground()
+        }
+        .configurationDisplayName("Marianum · Heute")
+        .description("Stundenplan und Vertretungen für den anstehenden Schultag.")
+        .supportedFamilies([.systemSmall, .systemMedium, .systemLarge])
+    }
+}
+
+struct TimetableDayProvider: TimelineProvider {
+    func placeholder(in context: Context) -> TimetableEntry {
+        TimetableEntry.placeholder()
+    }
+
+    func getSnapshot(in context: Context, completion: @escaping (TimetableEntry) -> Void) {
+        completion(TimetableEntry.current(variant: .day))
+    }
+
+    func getTimeline(
+        in context: Context,
+        completion: @escaping (Timeline<TimetableEntry>) -> Void
+    ) {
+        let entry = TimetableEntry.current(variant: .day)
+        // 30 min mirrors the Dart workmanager cadence. iOS treats this as
+        // advisory; the "Stand:" label tells the user when data is stale.
+        let next = Calendar.current.date(byAdding: .minute, value: 30, to: Date()) ?? Date()
+        completion(Timeline(entries: [entry], policy: .after(next)))
+    }
+}
+
+// MARK: - Week widget
+
+struct TimetableWeekWidget: Widget {
+    let kind: String = "TimetableWeekWidget"
+
+    var body: some WidgetConfiguration {
+        StaticConfiguration(kind: kind, provider: TimetableWeekProvider()) { entry in
+            TimetableWeekView(entry: entry).widgetContainerBackground()
+        }
+        .configurationDisplayName("Marianum · Woche")
+        .description("Stundenplan und Vertretungen für die ganze Schulwoche.")
+        .supportedFamilies([.systemMedium, .systemLarge, .systemExtraLarge])
+    }
+}
+
+struct TimetableWeekProvider: TimelineProvider {
+    func placeholder(in context: Context) -> TimetableEntry {
+        TimetableEntry.placeholder()
+    }
+
+    func getSnapshot(in context: Context, completion: @escaping (TimetableEntry) -> Void) {
+        completion(TimetableEntry.current(variant: .week))
+    }
+
+    func getTimeline(
+        in context: Context,
+        completion: @escaping (Timeline<TimetableEntry>) -> Void
+    ) {
+        let entry = TimetableEntry.current(variant: .week)
+        let next = Calendar.current.date(byAdding: .minute, value: 30, to: Date()) ?? Date()
+        completion(Timeline(entries: [entry], policy: .after(next)))
+    }
+}
+
+// MARK: - Entry
+
+enum TimetableVariant { case day, week }
+
+struct TimetableEntry: TimelineEntry {
+    let date: Date
+    let variant: TimetableVariant
+    let data: WidgetTimetableData?
+    let isLoggedIn: Bool
+    let themeMode: String
+
+    static func placeholder() -> TimetableEntry {
+        TimetableEntry(
+            date: Date(),
+            variant: .day,
+            data: nil,
+            isLoggedIn: true,
+            themeMode: "system"
+        )
+    }
+
+    static func current(variant: TimetableVariant) -> TimetableEntry {
+        let isLoggedIn = WidgetDataLoader.isLoggedIn()
+        let data = isLoggedIn
+            ? (variant == .day ? WidgetDataLoader.loadDay() : WidgetDataLoader.loadWeek())
+            : nil
+        return TimetableEntry(
+            date: Date(),
+            variant: variant,
+            data: data,
+            isLoggedIn: isLoggedIn,
+            themeMode: WidgetDataLoader.themeMode()
+        )
+    }
+}
+
+extension View {
+    @ViewBuilder
+    func widgetThemeOverride(_ mode: String) -> some View {
+        switch mode {
+        case "light": self.environment(\.colorScheme, .light)
+        case "dark": self.environment(\.colorScheme, .dark)
+        default: self
+        }
+    }
+
+    /// `.containerBackground(_:for:)` is iOS 17+. Older iOS uses the
+    /// implicit `.background(...)` model and renders fine without it.
+    @ViewBuilder
+    func widgetContainerBackground() -> some View {
+        if #available(iOS 17.0, *) {
+            self.containerBackground(.fill.tertiary, for: .widget)
+        } else {
+            self
+        }
+    }
+}

ios/TimetableWidgetExtension/WidgetData.swift

@@ -0,0 +1,128 @@
+import Foundation
+
+/// Mirrors lib/widget_data/widget_data.dart. JSON keys must stay in sync —
+/// the bridge is one-way: Dart writes, Swift reads.
+enum WidgetLessonStatus: String, Codable {
+    case regular
+    case ongoing
+    case past
+    case cancelled
+    case irregular
+    case teacherChanged
+    case event
+}
+
+struct WidgetLesson: Codable {
+    let start: Date
+    let end: Date
+    let subjectShort: String
+    let subjectLong: String?
+    let room: String?
+    let teacher: String?
+    let originalTeacher: String?
+    let status: WidgetLessonStatus
+    let customColor: String?
+    let siblingCount: Int?
+}
+
+struct WidgetPeriod: Codable {
+    let name: String
+    let startMinutes: Int
+    let endMinutes: Int
+    let virtualStartMinutes: Int
+    let virtualEndMinutes: Int
+}
+
+struct WidgetTimetableData: Codable {
+    let fetchedAt: Date
+    let anchorDate: Date
+    let lessons: [WidgetLesson]
+    let periods: [WidgetPeriod]
+    let isHoliday: Bool
+    let holidayName: String?
+}
+
+enum WidgetDataKey {
+    static let appGroupId = "group.eu.mhsl.marianum.mobile.client.widget"
+    static let dayData = "widget_data_day_v1"
+    static let weekData = "widget_data_week_v1"
+    static let loggedIn = "widget_data_logged_in_v1"
+    static let themeMode = "widget_setting_theme_mode_v1"
+}
+
+enum WidgetDataLoader {
+    /// Dart's `DateTime.toIso8601String()` on a non-UTC DateTime drops the
+    /// trailing Z and ships local wall-clock time. ISO8601DateFormatter's
+    /// default treats that as UTC and shifts every lesson by the local TZ
+    /// offset — dispatch by suffix instead, mirroring WidgetDataParser.kt.
+    private static func parseDartDate(_ raw: String) -> Date? {
+        let hasTzSuffix = raw.hasSuffix("Z")
+            || raw.range(of: #"[+-]\d{2}:?\d{2}$"#, options: .regularExpression) != nil
+        if hasTzSuffix {
+            let iso = ISO8601DateFormatter()
+            iso.formatOptions = [.withFullDate, .withFullTime, .withFractionalSeconds]
+            if let d = iso.date(from: raw) { return d }
+            iso.formatOptions = [.withFullDate, .withFullTime]
+            return iso.date(from: raw)
+        }
+        for pattern in [
+            "yyyy-MM-dd'T'HH:mm:ss.SSSSSS",
+            "yyyy-MM-dd'T'HH:mm:ss.SSS",
+            "yyyy-MM-dd'T'HH:mm:ss",
+        ] {
+            let f = DateFormatter()
+            f.dateFormat = pattern
+            f.timeZone = TimeZone.current
+            f.locale = Locale(identifier: "en_US_POSIX")
+            if let d = f.date(from: raw) { return d }
+        }
+        return nil
+    }
+
+    private static func decoder() -> JSONDecoder {
+        let dec = JSONDecoder()
+        dec.dateDecodingStrategy = .custom { decoder in
+            let container = try decoder.singleValueContainer()
+            let raw = try container.decode(String.self)
+            if let d = parseDartDate(raw) { return d }
+            throw DecodingError.dataCorruptedError(
+                in: container,
+                debugDescription: "Unparseable date: \(raw)"
+            )
+        }
+        return dec
+    }
+
+    static func loadDay() -> WidgetTimetableData? {
+        load(key: WidgetDataKey.dayData)
+    }
+
+    static func loadWeek() -> WidgetTimetableData? {
+        load(key: WidgetDataKey.weekData)
+    }
+
+    static func isLoggedIn() -> Bool {
+        let defaults = UserDefaults(suiteName: WidgetDataKey.appGroupId)
+        return defaults?.bool(forKey: WidgetDataKey.loggedIn) ?? false
+    }
+
+    /// "light" / "dark" / "system". The view's `.environment(\.colorScheme)`
+    /// reads this so the App's theme choice wins over the OS-level setting.
+    static func themeMode() -> String {
+        let defaults = UserDefaults(suiteName: WidgetDataKey.appGroupId)
+        return defaults?.string(forKey: WidgetDataKey.themeMode) ?? "system"
+    }
+
+    private static func load(key: String) -> WidgetTimetableData? {
+        guard let defaults = UserDefaults(suiteName: WidgetDataKey.appGroupId),
+              let raw = defaults.string(forKey: key),
+              let data = raw.data(using: .utf8) else {
+            return nil
+        }
+        do {
+            return try decoder().decode(WidgetTimetableData.self, from: data)
+        } catch {
+            return nil
+        }
+    }
+}

lib/api/marianumcloud/search/search_files.dart

@@ -0,0 +1,36 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:http/http.dart' as http;
+
+import '../nextcloud_ocs.dart';
+import 'search_files_response.dart';
+
+/// Wraps the Nextcloud OCS Search Provider API for the `files` provider.
+/// Endpoint: `/ocs/v2.php/search/providers/files/search`.
+class SearchFiles {
+  Future<SearchFilesResponse> run({
+    required String term,
+    int limit = 50,
+    int? cursor,
+  }) async {
+    final endpoint = NextcloudOcs.uri(
+      'search/providers/files/search',
+      queryParameters: {
+        'term': term,
+        'limit': limit.toString(),
+        if (cursor != null) 'cursor': cursor.toString(),
+      },
+    );
+    final response = await http.get(endpoint, headers: NextcloudOcs.headers());
+    if (response.statusCode != HttpStatus.ok) {
+      throw Exception(
+        'Files search failed with ${response.statusCode}: ${response.body}',
+      );
+    }
+    final decoded = jsonDecode(response.body) as Map<String, dynamic>;
+    final ocs = decoded['ocs'] as Map<String, dynamic>;
+    final data = ocs['data'] as Map<String, dynamic>;
+    return SearchFilesResponse.fromJson(data);
+  }
+}

lib/api/marianumcloud/search/search_files_response.dart

@@ -0,0 +1,91 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import '../webdav/queries/list_files/cacheable_file.dart';
+
+part 'search_files_response.g.dart';
+
+/// Subset of the OCS Search Provider API response we actually consume.
+/// The provider (`files`) returns one object per match plus pagination state.
+@JsonSerializable(explicitToJson: true)
+class SearchFilesResponse {
+  final String name;
+  final bool isPaginated;
+  final int? cursor;
+  final List<SearchFilesEntry> entries;
+
+  SearchFilesResponse({
+    required this.name,
+    required this.isPaginated,
+    required this.cursor,
+    required this.entries,
+  });
+
+  factory SearchFilesResponse.fromJson(Map<String, dynamic> json) =>
+      _$SearchFilesResponseFromJson(json);
+  Map<String, dynamic> toJson() => _$SearchFilesResponseToJson(this);
+}
+
+@JsonSerializable()
+class SearchFilesEntry {
+  final String title;
+  final String? subline;
+  final String? icon;
+  final String? resourceUrl;
+  final Map<String, dynamic>? attributes;
+
+  SearchFilesEntry({
+    required this.title,
+    this.subline,
+    this.icon,
+    this.resourceUrl,
+    this.attributes,
+  });
+
+  factory SearchFilesEntry.fromJson(Map<String, dynamic> json) =>
+      _$SearchFilesEntryFromJson(json);
+  Map<String, dynamic> toJson() => _$SearchFilesEntryToJson(this);
+
+  /// Heuristic — the files provider sets icon classes containing "folder" for
+  /// directories. Falls back to false when missing or unrecognised.
+  bool get isDirectory => (icon ?? '').toLowerCase().contains('folder');
+
+  String? _stringAttribute(String key) {
+    final raw = attributes?[key];
+    return raw is String && raw.isNotEmpty ? raw : null;
+  }
+
+  String? _dirFromResourceUrl() {
+    final url = resourceUrl;
+    if (url == null) return null;
+    return Uri.tryParse(url)?.queryParameters['dir'];
+  }
+
+  /// Reconstructs the WebDAV-relative path used elsewhere (matching
+  /// [CacheableFile.path] — no leading slash, trailing slash for
+  /// directories). Prefers the explicit `path` attribute set by Nextcloud's
+  /// files search provider (28+); falls back to the `dir` query parameter
+  /// in [resourceUrl]. Returns `null` when neither is available — `subline`
+  /// is intentionally **not** parsed because it is localized UI text
+  /// ("in {folder}"), not a path, and using it produced bogus duplicate
+  /// folder headers like "/in Alte-Notebooks".
+  String? get webdavPath {
+    final attrPath = _stringAttribute('path');
+    if (attrPath != null) {
+      final stripped = attrPath.replaceAll(RegExp(r'^/+|/+$'), '');
+      return isDirectory ? '$stripped/' : stripped;
+    }
+    final dir = _dirFromResourceUrl();
+    if (dir != null) {
+      final stripped = dir.replaceAll(RegExp(r'^/+|/+$'), '');
+      final base = stripped.isEmpty ? title : '$stripped/$title';
+      return isDirectory ? '$base/' : base;
+    }
+    return null;
+  }
+
+  CacheableFile? toCacheable() {
+    final path = webdavPath;
+    if (path == null) return null;
+    return CacheableFile(path: path, isDirectory: isDirectory, name: title);
+  }
+}

lib/api/marianumcloud/search/search_files_response.g.dart

@@ -0,0 +1,44 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'search_files_response.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+SearchFilesResponse _$SearchFilesResponseFromJson(Map<String, dynamic> json) =>
+    SearchFilesResponse(
+      name: json['name'] as String,
+      isPaginated: json['isPaginated'] as bool,
+      cursor: (json['cursor'] as num?)?.toInt(),
+      entries: (json['entries'] as List<dynamic>)
+          .map((e) => SearchFilesEntry.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    );
+
+Map<String, dynamic> _$SearchFilesResponseToJson(
+  SearchFilesResponse instance,
+) => <String, dynamic>{
+  'name': instance.name,
+  'isPaginated': instance.isPaginated,
+  'cursor': instance.cursor,
+  'entries': instance.entries.map((e) => e.toJson()).toList(),
+};
+
+SearchFilesEntry _$SearchFilesEntryFromJson(Map<String, dynamic> json) =>
+    SearchFilesEntry(
+      title: json['title'] as String,
+      subline: json['subline'] as String?,
+      icon: json['icon'] as String?,
+      resourceUrl: json['resourceUrl'] as String?,
+      attributes: json['attributes'] as Map<String, dynamic>?,
+    );
+
+Map<String, dynamic> _$SearchFilesEntryToJson(SearchFilesEntry instance) =>
+    <String, dynamic>{
+      'title': instance.title,
+      'subline': instance.subline,
+      'icon': instance.icon,
+      'resourceUrl': instance.resourceUrl,
+      'attributes': instance.attributes,
+    };

lib/api/marianumcloud/talk/chat/get_chat_response.dart

@@ -66,7 +66,7 @@ class GetChatResponseObject {
 
   static GetChatResponseObject getDateDummy(int timestamp) {
     var elementDate = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
-    return getTextDummy(elementDate.formatDate());
+    return getTextDummy(elementDate.formatDateRelativeShort());
   }
 
   static GetChatResponseObject getTextDummy(String text) =>

lib/api/marianumcloud/talk/chat/long_poll_chat.dart

@@ -0,0 +1,69 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:http/http.dart' as http;
+
+import '../../../errors/network_exception.dart';
+import '../../../errors/server_exception.dart';
+import '../../nextcloud_ocs.dart';
+import 'get_chat_params.dart';
+import 'get_chat_response.dart';
+
+/// Long-poll variant of GetChat (`lookIntoFuture=1`). Bypasses [TalkApi]
+/// because that layer treats non-2xx as errors, and we need 304 to be a
+/// normal "no new messages" outcome. `setReadMarker=on` lets the server
+/// move the read cursor whenever the call returns messages.
+class LongPollChat {
+  final String chatToken;
+  final int lastKnownMessageId;
+  final int timeoutSeconds;
+
+  LongPollChat({
+    required this.chatToken,
+    required this.lastKnownMessageId,
+    this.timeoutSeconds = 30,
+  });
+
+  /// Returns the response, or `null` on HTTP 304 (server timeout, nothing new).
+  Future<GetChatResponse?> run() async {
+    final params = GetChatParams(
+      lookIntoFuture: GetChatParamsSwitch.on,
+      timeout: timeoutSeconds,
+      lastKnownMessageId: lastKnownMessageId,
+      includeLastKnown: GetChatParamsSwitch.off,
+      setReadMarker: GetChatParamsSwitch.on,
+      limit: 100,
+    );
+    final uri = NextcloudOcs.uri(
+      'apps/spreed/api/v1/chat/$chatToken',
+      queryParameters: params.toJson(),
+    );
+    final headers = NextcloudOcs.headers();
+
+    final http.Response response;
+    try {
+      response = await http
+          .get(uri, headers: headers)
+          .timeout(Duration(seconds: timeoutSeconds + 15));
+    } on TimeoutException catch (e) {
+      throw NetworkException.timeout(technicalDetails: 'LongPollChat $uri: $e');
+    } on SocketException catch (e) {
+      throw NetworkException(technicalDetails: 'LongPollChat $uri: ${e.message}');
+    } on http.ClientException catch (e) {
+      throw NetworkException(technicalDetails: 'LongPollChat $uri: ${e.message}');
+    }
+
+    final status = response.statusCode;
+    if (status == 304) return null;
+    if (status >= 200 && status < 300) {
+      final decoded = jsonDecode(response.body) as Map<String, dynamic>;
+      return GetChatResponse.fromJson(decoded['ocs'] as Map<String, dynamic>)
+        ..headers = response.headers;
+    }
+    throw ServerException(
+      statusCode: status,
+      technicalDetails: 'LongPollChat $uri: HTTP $status',
+    );
+  }
+}

lib/api/marianumcloud/talk/set_read_marker/set_read_marker.dart

@@ -26,11 +26,5 @@ class SetReadMarker extends TalkApi {
     Uri uri,
     Object? body,
     Map<String, String>? headers,
-  ) {
+  ) => readState ? http.post(uri, headers: headers) : http.delete(uri, headers: headers);
-    if (readState) {
-      return http.post(uri, headers: headers);
-    } else {
-      return http.delete(uri, headers: headers);
-    }
-  }
 }

lib/api/marianumcloud/talk/share_files_to_chat.dart

@@ -0,0 +1,21 @@
+import '../files_sharing/file_sharing_api.dart';
+import '../files_sharing/file_sharing_api_params.dart';
+
+/// WebDAV folder under which Talk-shared files are uploaded before being
+/// linked into a chat.
+const String talkShareFolder = 'MarianumMobile';
+
+/// Posts each already-uploaded WebDAV path as a Talk share (ShareType 10) to
+/// the given conversation token. Calls run concurrently — the server accepts
+/// parallel posts and the picker UI is blocked anyway, so we shouldn't pay
+/// O(n*RTT) latency per share.
+Future<void> shareFilesToChat({
+  required String token,
+  required List<String> remoteFilePaths,
+}) => Future.wait(
+  remoteFilePaths.map(
+    (path) => FileSharingApi().share(
+      FileSharingApiParams(shareType: 10, shareWith: token, path: path),
+    ),
+  ),
+);

lib/api/marianumcloud/webdav/queries/list_files/list_files_cache.dart

@@ -16,8 +16,9 @@ class ListFilesCache extends SimpleCache<ListFilesResponse> {
     super.onNetworkData,
     super.onError,
     required String path,
+    super.renew = false,
   }) : super(
-         cacheTime: RequestCache.cacheNothing,
+         cacheTime: _cacheTimeFor(path),
          loader: () => ListFiles(ListFilesParams(path)).run(),
          fromJson: ListFilesResponse.fromJson,
          onUpdate: onUpdate,
@@ -25,6 +26,44 @@ class ListFilesCache extends SimpleCache<ListFilesResponse> {
     start(_documentId(path));
   }
 
+  /// The Nextcloud root listing is significantly slower than subfolders on
+  /// our instance and frequently returns HTTP 500. Since its content rarely
+  /// changes, the root payload is cached for a full day so app-resume and
+  /// connectivity-change auto-refetch triggers do not re-hit the slow root
+  /// endpoint within the same day. To avoid a long wait on the very first
+  /// open of the Files page, `prefetchRootListing` (called from `main`)
+  /// kicks off an async warm-up fetch in the background while the user is
+  /// still on the launch screen / other modules. Subfolders keep the
+  /// previous "always refetch on visit" TTL because their content changes
+  /// more often. Explicit user refreshes (rename, delete, copy/move,
+  /// upload) bypass the TTL via the inherited [renew] flag or via
+  /// [invalidate].
+  static int _cacheTimeFor(String path) {
+    final stripped = path.replaceAll('/', '').trim();
+    return stripped.isEmpty
+        ? RequestCache.cacheDay
+        : RequestCache.cacheNothing;
+  }
+
+  /// Triggers a root-listing fetch in the background if no cached payload
+  /// exists yet. Intended to be called once after login from `main` so the
+  /// (slow) root listing is already populated by the time the user
+  /// navigates to the Files module.
+  ///
+  /// No-ops when a cached root payload is already present in localstore —
+  /// the regular TTL handling in [RequestCache] takes over from there.
+  static Future<void> prefetchRootListing() async {
+    const rootPath = '';
+    final cached = await Localstore.instance
+        .collection(RequestCache.collection)
+        .doc(_documentId(rootPath))
+        .get();
+    if (cached != null) return;
+    // Drive the same code path as a regular fetch so the result lands in
+    // the cache; we don't care about the in-memory callback here.
+    ListFilesCache(path: rootPath, onUpdate: (_) {});
+  }
+
   static String _documentId(String path) {
     final cacheName = md5
         .convert(utf8.encode('MarianumMobile-$path'))

lib/app.dart

@@ -13,15 +13,20 @@ import 'model/data_cleaner.dart';
 import 'notification/notification_controller.dart';
 import 'notification/notification_tasks.dart';
 import 'notification/notify_updater.dart';
+import 'routing/app_routes.dart';
+import 'share_intent/share_intent_listener.dart';
 import 'state/app/modules/app_modules.dart';
 import 'state/app/modules/breaker/bloc/breaker_bloc.dart';
 import 'state/app/modules/chat_list/bloc/chat_list_bloc.dart';
 import 'state/app/modules/settings/bloc/settings_cubit.dart';
 import 'state/app/modules/timetable/bloc/timetable_bloc.dart';
+import 'state/app/modules/timetable/bloc/timetable_state.dart';
 import 'storage/settings.dart' as model;
 import 'utils/debouncer.dart';
 import 'view/pages/overhang.dart';
 import 'widget/breaker/breaker.dart';
+import 'widget_data/widget_navigation.dart';
+import 'widget_data/widget_publisher.dart';
 
 class App extends StatefulWidget {
   const App({super.key});
@@ -31,16 +36,33 @@ class App extends StatefulWidget {
 }
 
 class _AppState extends State<App> with WidgetsBindingObserver {
-  late Timer _refetchChats;
   late Timer _updateTimings;
-  // Tracked via the bottom-nav controller's listener so it always reflects the
+  StreamSubscription<dynamic>? _timetableWidgetSync;
-  // user's actual position, even between rapid setting emits where the
+  StreamSubscription<RemoteMessage>? _onMessageSub;
-  // controller hasn't caught up to a scheduled jump yet.
+  StreamSubscription<RemoteMessage>? _onMessageOpenedAppSub;
+  StreamSubscription<String>? _fcmTokenRefreshSub;
   int _knownTotalTabs = 1;
   bool _userOnLastTab = false;
 
+  static const Duration _chatListActiveInterval = Duration(seconds: 15);
+  static const Duration _chatListIdleInterval = Duration(seconds: 60);
+
   void _onTabControllerChanged() {
     _userOnLastTab = Main.bottomNavigator.index == _knownTotalTabs - 1;
+    _syncChatListPolling();
+  }
+
+  void _syncChatListPolling() {
+    if (!mounted) return;
+    final modules = AppModule.getBottomBarModules(context);
+    final talkSlot = modules.indexWhere((m) => m.module == Modules.talk);
+    final talkIsActive =
+        talkSlot >= 0 && Main.bottomNavigator.index == talkSlot;
+    final bloc = context.read<ChatListBloc>();
+    bloc.setAutoRefreshInterval(
+      talkIsActive ? _chatListActiveInterval : _chatListIdleInterval,
+    );
+    if (talkIsActive) bloc.refresh();
   }
 
   @override
@@ -52,9 +74,36 @@ class _AppState extends State<App> with WidgetsBindingObserver {
         log('Refreshing due to LifecycleChange');
         NotificationTasks.updateProviders(context);
       });
+      _handlePendingWidgetNavigation();
     }
   }
 
+  Future<void> _handlePendingWidgetNavigation() async {
+    final pending = await WidgetNavigation.consumePendingTimetableTap();
+    if (!pending || !mounted) return;
+    // `withNavBar: false` routes sit on the root navigator above the
+    // bottom-nav; pop them so jumpToTab is actually visible. Stop at
+    // popups so open dialogs/sheets stay alive.
+    final navigator = Navigator.of(context);
+    if (navigator.canPop()) {
+      navigator.popUntil((route) => route.isFirst || route is PopupRoute);
+    }
+    AppRoutes.goToTab(context, Modules.timetable);
+  }
+
+  void _handlePendingShare() {
+    if (!mounted) return;
+    final share = ShareIntentListener.pending.value;
+    if (share == null) return;
+    // A second share would otherwise leave the previous share-flow page
+    // on top with stale (already-cleared) file paths.
+    final navigator = Navigator.of(context);
+    if (navigator.canPop()) {
+      navigator.popUntil((route) => route.isFirst || route is PopupRoute);
+    }
+    AppRoutes.openShareTarget(context, share);
+  }
+
   @override
   void initState() {
     super.initState();
@@ -66,32 +115,56 @@ class _AppState extends State<App> with WidgetsBindingObserver {
       if (!mounted) return;
       context.read<BreakerBloc>().refresh();
       context.read<ChatListBloc>().refresh();
-      // App is freshly mounted on every login (BlocConsumer in main.dart
+      // Re-mounts on every login, so this also covers post-logout state reset.
-      // swaps it in for Login), so this also covers the post-logout case
+      final timetable = context.read<TimetableBloc>();
-      // where the bloc was reset to an empty state and needs a fresh fetch.
+      timetable.refresh();
-      context.read<TimetableBloc>().refresh();
+      // Mirror BLoC updates into the home-screen widget without waiting
+      // for the periodic background refresh.
+      final settingsCubit = context.read<SettingsCubit>();
+      _timetableWidgetSync?.cancel();
+      _timetableWidgetSync = timetable.stream.listen((state) {
+        final data = state.data;
+        if (data is TimetableState && !state.isLoading) {
+          unawaited(
+            WidgetPublisher.publishFromBlocState(
+              data,
+              settings: settingsCubit.val(),
+            ),
+          );
+        }
+      });
+      // Initial publish in case hydrated storage already has data.
+      final initialData = timetable.state.data;
+      if (initialData is TimetableState) {
+        unawaited(
+          WidgetPublisher.publishFromBlocState(
+            initialData,
+            settings: settingsCubit.val(),
+          ),
+        );
+      }
+      unawaited(_handlePendingWidgetNavigation());
+      ShareIntentListener.instance.attach();
+      ShareIntentListener.pending.addListener(_handlePendingShare);
+      _handlePendingShare();
+      _syncChatListPolling();
     });
 
     _updateTimings = Timer.periodic(const Duration(seconds: 30), (_) {
       if (mounted) setState(() {});
     });
 
-    _refetchChats = Timer.periodic(const Duration(seconds: 60), (_) {
-      WidgetsBinding.instance.addPostFrameCallback((_) {
-        if (!mounted) return;
-        context.read<ChatListBloc>().refresh();
-      });
-    });
-
     UpdateUserIndex.index();
 
     if (context.read<SettingsCubit>().val().notificationSettings.enabled) {
       void update() => NotifyUpdater.registerToServer();
-      FirebaseMessaging.instance.onTokenRefresh.listen((_) => update());
+      _fcmTokenRefreshSub = FirebaseMessaging.instance.onTokenRefresh.listen(
+        (_) => update(),
+      );
       update();
     }
 
-    FirebaseMessaging.onMessage.listen((message) {
+    _onMessageSub = FirebaseMessaging.onMessage.listen((message) {
       if (!mounted) return;
       NotificationController.onForegroundMessageHandler(message, context);
     });
@@ -99,7 +172,9 @@ class _AppState extends State<App> with WidgetsBindingObserver {
       NotificationController.onBackgroundMessageHandler,
     );
 
-    FirebaseMessaging.onMessageOpenedApp.listen((message) {
+    _onMessageOpenedAppSub = FirebaseMessaging.onMessageOpenedApp.listen((
+      message,
+    ) {
       if (!mounted) return;
       NotificationController.onAppOpenedByNotification(message, context);
     });
@@ -113,8 +188,13 @@ class _AppState extends State<App> with WidgetsBindingObserver {
 
   @override
   void dispose() {
-    _refetchChats.cancel();
     _updateTimings.cancel();
+    _timetableWidgetSync?.cancel();
+    _onMessageSub?.cancel();
+    _onMessageOpenedAppSub?.cancel();
+    _fcmTokenRefreshSub?.cancel();
+    ShareIntentListener.pending.removeListener(_handlePendingShare);
+    ShareIntentListener.instance.detach();
     Main.bottomNavigator.removeListener(_onTabControllerChanged);
     WidgetsBinding.instance.removeObserver(this);
     super.dispose();
@@ -129,17 +209,9 @@ class _AppState extends State<App> with WidgetsBindingObserver {
       final totalTabs = bottomBarModules.length + 1;
       final currentIndex = Main.bottomNavigator.index;
 
-      // The bottom-bar layout is identified by the ordered list of module
+      // PersistentTabView caches per-tab navigators by index and only
-      // names plus the trailing 'more' slot. Whenever this layout changes
+      // appends/trims at the end, so reordering/hiding leaves stale
-      // — slot count, reordering, or hiding a module — we recreate the
+      // route stacks under the wrong tabs. Re-key on layout to remount.
-      // entire PersistentTabView via the [layoutKey] below. The package
-      // caches per-tab navigator state by index in `_navigatorKeys`, and
-      // its internal `alignLength` only ever appends or trims at the end.
-      // So when the module sitting at e.g. index 3 changes, the navigator
-      // at that index still serves the old screen's route stack and the
-      // user sees stale content. Re-mounting clears those stacks; the
-      // trade-off (losing in-tab pushed routes on a settings change) is
-      // acceptable since the user explicitly re-shaped the bar.
       final layoutKey = ValueKey(
         '${bottomBarModules.map((m) => m.module.name).join('|')}|more',
       );
@@ -151,12 +223,8 @@ class _AppState extends State<App> with WidgetsBindingObserver {
         } else if (currentIndex >= totalTabs) {
           targetIndex = totalTabs - 1;
         }
-        // Re-mounting PTV with a new key constructs fresh internals from
+        // Replace the controller atomically: a stale index past the new
-        // its controller's current index. If the controller still points
+        // tab list crashes Style6BottomNavBar's initState.
-        // past the new tab list, Style6BottomNavBar (and others) crash on
-        // out-of-range access during initState. Replace the controller
-        // atomically with one initialised at the safe target index so the
-        // new PTV mounts cleanly.
         if (targetIndex != currentIndex) {
           Main.bottomNavigator.removeListener(_onTabControllerChanged);
           Main.bottomNavigator = PersistentTabController(
@@ -192,14 +260,17 @@ class _AppState extends State<App> with WidgetsBindingObserver {
           ),
         ],
         navBarBuilder: (config) => Style6BottomNavBar(
-          // Style6BottomNavBar builds its internal animation controller list
+          // Animation controllers are built once in initState and never
-          // in initState and never grows it on didUpdateWidget. Keying by the
+          // grown — re-key on item count to avoid RangeError on growth.
-          // item count forces a fresh State whenever the slot count changes,
-          // which avoids a RangeError when more tabs slide in.
           key: ValueKey(config.items.length),
           navBarConfig: config,
           navBarDecoration: NavBarDecoration(
-            border: const Border(top: BorderSide(width: 1, color: Colors.grey)),
+            border: Border(
+              top: BorderSide(
+                width: 1,
+                color: Theme.of(context).colorScheme.outlineVariant,
+              ),
+            ),
             color: Theme.of(context).colorScheme.surface,
           ),
         ),

lib/background/widget_background_task.dart

@@ -0,0 +1,178 @@
+import 'dart:async';
+import 'dart:developer';
+
+import 'package:flutter/widgets.dart';
+import 'package:intl/intl.dart';
+import 'package:workmanager/workmanager.dart';
+
+import '../api/mhsl/custom_timetable_event/get/get_custom_timetable_event.dart';
+import '../api/mhsl/custom_timetable_event/get/get_custom_timetable_event_params.dart';
+import '../api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.dart';
+import '../api/webuntis/queries/authenticate/authenticate.dart';
+import '../api/webuntis/queries/get_holidays/get_holidays.dart';
+import '../api/webuntis/queries/get_holidays/get_holidays_response.dart';
+import '../api/webuntis/queries/get_rooms/get_rooms.dart';
+import '../api/webuntis/queries/get_rooms/get_rooms_response.dart';
+import '../api/webuntis/queries/get_subjects/get_subjects.dart';
+import '../api/webuntis/queries/get_subjects/get_subjects_response.dart';
+import '../api/webuntis/queries/get_timegrid_units/get_timegrid_units.dart';
+import '../api/webuntis/queries/get_timegrid_units/get_timegrid_units_response.dart';
+import '../api/webuntis/queries/get_timetable/get_timetable.dart';
+import '../api/webuntis/queries/get_timetable/get_timetable_params.dart';
+import '../model/account_data.dart';
+import '../widget_data/widget_data_mapper.dart';
+import '../widget_data/widget_publisher.dart';
+import '../widget_data/widget_sync.dart';
+
+/// Periodic widget refresh in a background Dart isolate. Native HTTP would
+/// mean reimplementing WebUntis JSON-RPC (auth, session-timeout retry -8520,
+/// payload quirks) twice — Dart isolate keeps that logic in one place.
+class WidgetBackgroundTask {
+  static const String periodicTaskName = 'eu.mhsl.marianum.widget.refresh';
+  static const String oneOffTaskName = 'eu.mhsl.marianum.widget.refresh.once';
+
+  static const Duration periodicFrequency = Duration(minutes: 30);
+
+  static Future<void> initialize() async {
+    await Workmanager().initialize(_callbackDispatcher);
+    await Workmanager().registerPeriodicTask(
+      periodicTaskName,
+      periodicTaskName,
+      frequency: periodicFrequency,
+      constraints: Constraints(networkType: NetworkType.connected),
+      existingWorkPolicy: ExistingPeriodicWorkPolicy.keep,
+      backoffPolicy: BackoffPolicy.linear,
+      backoffPolicyDelay: const Duration(minutes: 5),
+    );
+  }
+
+  static Future<void> requestImmediateRefresh() async {
+    await Workmanager().registerOneOffTask(
+      '$oneOffTaskName-${DateTime.now().millisecondsSinceEpoch}',
+      oneOffTaskName,
+      constraints: Constraints(networkType: NetworkType.connected),
+      existingWorkPolicy: ExistingWorkPolicy.append,
+    );
+  }
+
+  static Future<void> cancelAll() async {
+    await Workmanager().cancelAll();
+  }
+}
+
+@pragma('vm:entry-point')
+void _callbackDispatcher() {
+  Workmanager().executeTask((task, inputData) async {
+    try {
+      WidgetsFlutterBinding.ensureInitialized();
+      await AccountData().waitForPopulation();
+      if (!AccountData().isPopulated()) {
+        log('[widget-bg] not logged in, skipping refresh');
+        await WidgetSync.setLoggedIn(false);
+        await WidgetSync.triggerUpdate();
+        return true;
+      }
+      await _refresh();
+      return true;
+    } on Exception catch (e, s) {
+      log('[widget-bg] refresh failed: $e', stackTrace: s);
+      // false → Workmanager retries with backoff. Native side keeps the
+      // last good snapshot so the user still sees something.
+      return false;
+    }
+  });
+}
+
+Future<void> _refresh() async {
+  await WidgetSync.ensureInitialized();
+  await Authenticate.createSession();
+
+  final now = WidgetPublisher.widgetNow();
+  final dateFormat = DateFormat('yyyyMMdd');
+  // 14-day window so the week-widget rolls forward into next Monday's
+  // lessons on Friday evening.
+  final weekStart = _startOfWeek(now);
+  final weekEndExclusive = weekStart.add(const Duration(days: 14));
+  final session = await Authenticate.getSession();
+
+  final timetable = await GetTimetable(
+    GetTimetableParams(
+      options: GetTimetableParamsOptions(
+        element: GetTimetableParamsOptionsElement(
+          id: session.personId,
+          type: session.personType,
+          keyType: GetTimetableParamsOptionsElementKeyType.id,
+        ),
+        startDate: int.parse(dateFormat.format(weekStart)),
+        endDate: int.parse(
+          dateFormat.format(weekEndExclusive.subtract(const Duration(days: 1))),
+        ),
+        teacherFields: GetTimetableParamsOptionsFields.all,
+        subjectFields: GetTimetableParamsOptionsFields.all,
+        roomFields: GetTimetableParamsOptionsFields.all,
+        klasseFields: GetTimetableParamsOptionsFields.all,
+      ),
+    ),
+  ).run();
+
+  // Reference data — failures fall through to null in the mapper rather
+  // than aborting the whole refresh.
+  final subjects = await _runOrNull<GetSubjectsResponse>(() => GetSubjects().run());
+  final rooms = await _runOrNull<GetRoomsResponse>(() => GetRooms().run());
+  final holidays = await _runOrNull<GetHolidaysResponse>(() => GetHolidays().run());
+  final timegrid = await _runOrNull<GetTimegridUnitsResponse>(
+    () => GetTimegridUnits().run(),
+  );
+  final customEvents = await _runOrNull<GetCustomTimetableEventResponse>(
+    () => GetCustomTimetableEvent(
+      GetCustomTimetableEventParams(AccountData().getUserSecret()),
+    ).run(),
+  );
+
+  final lessons = timetable.result;
+
+  final connectDouble = await WidgetSync.getConnectDoubleLessons();
+  final dayData = WidgetDataMapper.buildDayData(
+    now: now,
+    lessons: lessons,
+    subjects: subjects,
+    rooms: rooms,
+    holidays: holidays,
+    timegrid: timegrid,
+    customEvents: customEvents,
+    connectDoubleLessons: connectDouble,
+  );
+  final weekData = WidgetDataMapper.buildWeekData(
+    now: now,
+    lessons: lessons,
+    subjects: subjects,
+    rooms: rooms,
+    holidays: holidays,
+    timegrid: timegrid,
+    customEvents: customEvents,
+    connectDoubleLessons: connectDouble,
+  );
+
+  await WidgetSync.writeDayData(dayData);
+  await WidgetSync.writeWeekData(weekData);
+  await WidgetSync.setLoggedIn(true);
+  await WidgetSync.triggerUpdate();
+  log(
+    '[widget-bg] refreshed: day=${dayData.lessons.length} '
+    'week=${weekData.lessons.length}',
+  );
+}
+
+DateTime _startOfWeek(DateTime reference) {
+  final monday = reference.subtract(Duration(days: reference.weekday - 1));
+  return DateTime(monday.year, monday.month, monday.day);
+}
+
+Future<T?> _runOrNull<T>(Future<T> Function() task) async {
+  try {
+    return await task();
+  } on Exception catch (e) {
+    log('[widget-bg] reference fetch failed: $e');
+    return null;
+  }
+}

lib/extensions/date_time.dart

@@ -46,4 +46,18 @@ extension DateTimeFormatting on DateTime {
   String formatRelative() => Jiffy.parseFromDateTime(this).fromNow();
 
   String timeRangeTo(DateTime end) => '${formatHm()} - ${end.formatHm()}';
+
+  String formatDateRelativeShort({DateTime? now}) {
+    final reference = now ?? DateTime.now();
+    final today = DateTime(reference.year, reference.month, reference.day);
+    final self = DateTime(year, month, day);
+    final diff = today.difference(self).inDays;
+
+    if (diff == 0) return 'Heute';
+    if (diff == 1) return 'Gestern';
+    if (diff > 1 && diff <= 6) {
+      return Jiffy.parseFromDateTime(this).format(pattern: 'EEEE');
+    }
+    return formatDate();
+  }
 }

lib/main.dart

@@ -17,10 +17,14 @@ import 'package:path_provider/path_provider.dart';
 import 'package:persistent_bottom_nav_bar_v2/persistent_bottom_nav_bar_v2.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
+import 'api/marianumcloud/webdav/queries/list_files/list_files_cache.dart';
 import 'api/mhsl/breaker/get_breakers/get_breakers_response.dart';
 import 'app.dart';
+import 'background/widget_background_task.dart';
 import 'firebase_options.dart';
 import 'model/account_data.dart';
+import 'routing/app_routes.dart';
+import 'share_intent/share_intent_listener.dart';
 import 'state/app/modules/account/bloc/account_bloc.dart';
 import 'state/app/modules/account/bloc/account_state.dart';
 import 'state/app/modules/breaker/bloc/breaker_bloc.dart';
@@ -35,6 +39,7 @@ import 'view/login/login.dart';
 import 'widget/app_progress_indicator.dart';
 import 'widget/breaker/breaker.dart';
 import 'widget/debug/cache_view.dart';
+import 'widget_data/widget_sync.dart';
 
 Future<void> main() async {
   log('MarianumMobile started');
@@ -66,18 +71,42 @@ Future<void> main() async {
       HydratedBloc.storage = storage;
     }),
     AccountData().waitForPopulation(),
+    ShareIntentListener.instance.initialize(),
   ];
 
   log('starting app initialisation...');
   await Future.wait(initialisationTasks);
   log('app initialisation done!');
 
+  // Wire up the home-screen widget bridge before runApp so any widget render
+  // triggered during startup hits initialised native storage.
+  await WidgetSync.ensureInitialized();
+  unawaited(
+    WidgetBackgroundTask.initialize().onError(
+      (e, _) => log('Workmanager init failed: $e'),
+    ),
+  );
+
   unawaited(
     FirebaseMessaging.instance.getToken().then(
       (token) => log('Firebase token: ${token ?? "Error: no Firebase token!"}'),
     ),
   );
 
+  // Warm up the Nextcloud root listing in the background while the user is
+  // still on the launch screen / other modules — the root endpoint is slow
+  // on our instance, so kicking it off early means the Files page already
+  // has data ready by the time the user navigates to it. No-op when a
+  // cached payload is already present, so this does not undo the day-long
+  // root cache TTL.
+  if (AccountData().isPopulated()) {
+    unawaited(
+      ListFilesCache.prefetchRootListing().onError(
+        (e, _) => log('Files root prefetch failed: $e'),
+      ),
+    );
+  }
+
   if (kReleaseMode) {
     ErrorWidget.builder = (error) => Material(
       color: Colors.white,
@@ -125,7 +154,9 @@ Future<void> main() async {
         ),
         BlocProvider<BreakerBloc>(create: (_) => BreakerBloc()),
         BlocProvider<ChatListBloc>(create: (_) => ChatListBloc()),
-        BlocProvider<ChatBloc>(create: (_) => ChatBloc()),
+        BlocProvider<ChatBloc>(
+          create: (ctx) => ChatBloc(chatListBloc: ctx.read<ChatListBloc>()),
+        ),
         BlocProvider<TimetableBloc>(create: (_) => TimetableBloc()),
       ],
       child: const Main(),
@@ -171,6 +202,8 @@ class _MainState extends State<Main> {
           checkerboardRasterCacheImages:
               devToolsSettings.checkerboardRasterCacheImages,
           debugShowCheckedModeBanner: false,
+          // Used by ChatView.didPopNext to reclaim the global ChatBloc.
+          navigatorObservers: [AppRoutes.chatRouteObserver],
           localizationsDelegates: const [
             ...GlobalMaterialLocalizations.delegates,
             GlobalWidgetsLocalizations.delegate,
@@ -198,6 +231,10 @@ class _MainState extends State<Main> {
                     previous.status != current.status,
                 listener: (context, accountState) {
                   if (accountState.status != AccountStatus.loggedOut) return;
+                  // A pending share would otherwise survive logout and be
+                  // re-applied after re-login with file paths the OS may
+                  // already have evicted from the cache.
+                  ShareIntentListener.instance.clear();
                   // Routes pushed via AppRoutes (e.g. Settings) live on the
                   // root navigator and survive the home swap below, so they
                   // would still cover the Login screen after logout. Pop
@@ -287,6 +324,12 @@ Future<void> _wipeUserState({
     await prefs.clear();
     await HydratedBloc.storage.clear();
     await const CacheView().clear();
+    // Stop the periodic widget refresh job so the background isolate doesn't
+    // wake up every 30 minutes only to write `loggedIn=false`. Re-registers
+    // on the next successful login.
+    await WidgetBackgroundTask.cancelAll();
+    await WidgetSync.clear();
+    await WidgetSync.triggerUpdate();
   } catch (e, s) {
     log('User state wipe failed: $e', stackTrace: s);
   }

lib/notification/notification_controller.dart

@@ -1,13 +1,19 @@
+import 'dart:async';
+
 import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 
+import '../state/app/modules/chat/bloc/chat_bloc.dart';
 import '../widget/debug/debug_tile.dart';
 import '../widget/debug/json_viewer.dart';
 import '../widget/info_dialog.dart';
 import 'notification_tasks.dart';
 
+// `vm:entry-point` keeps this alive through AOT tree-shaking — the FCM
+// background isolate looks the class up by name from native code.
+@pragma('vm:entry-point')
 class NotificationController {
-  // Notification display is handled by the Firebase SDK using server-generated payloads.
   @pragma('vm:entry-point')
   static Future<void> onBackgroundMessageHandler(RemoteMessage message) async {
     NotificationTasks.updateBadgeCount(message);
@@ -17,8 +23,26 @@ class NotificationController {
     RemoteMessage message,
     BuildContext context,
   ) async {
-    NotificationTasks.updateProviders(context);
+    final pushToken = _extractChatToken(message);
+    final chatBloc = context.read<ChatBloc>();
+    // hasOpenChat, not currentToken: currentToken sticks around after
+    // leaveChat so didPopNext can re-claim a stacked chat.
+    final activeToken = chatBloc.state.data?.currentToken ?? '';
+    final chatIsOpen =
+        chatBloc.hasOpenChat &&
+        pushToken != null &&
+        pushToken.isNotEmpty &&
+        pushToken == activeToken;
+
     NotificationTasks.updateBadgeCount(message);
+
+    if (chatIsOpen) {
+      // Long-poll handles the message; just dismiss any stray tray entry.
+      unawaited(NotificationTasks.clearNotificationsForChat(pushToken));
+      return;
+    }
+
+    NotificationTasks.updateProviders(context);
   }
 
   static Future<void> onAppOpenedByNotification(

lib/notification/notification_tasks.dart

@@ -1,11 +1,15 @@
+import 'dart:developer';
+
+import 'package:eraser/eraser.dart';
 import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/cupertino.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_app_badge/flutter_app_badge.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../routing/app_routes.dart';
-import '../state/app/modules/chat/bloc/chat_bloc.dart';
 import '../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
+import 'notification_service.dart';
 
 class NotificationTasks {
   static void updateBadgeCount(RemoteMessage notification) {
@@ -14,9 +18,43 @@ class NotificationTasks {
     );
   }
 
+  /// Per-chat tag scheme. MUST match the Notify backend, which sets this
+  /// value on `AndroidNotification.setTag` AND `apns-collapse-id`.
+  static String chatTag(String chatToken) => 'talk_$chatToken';
+
+  /// Removes tray notifications belonging to [chatToken]. Eraser handles
+  /// iOS (where the plugin's `getActiveNotifications` returns null ids
+  /// for FCM posts and can't cancel them); the local-notifications sweep
+  /// handles Android and acts as a fallback while Eraser's native side
+  /// isn't built in yet.
+  static Future<void> clearNotificationsForChat(String chatToken) async {
+    final tag = chatTag(chatToken);
+    try {
+      await Eraser.clearAppNotificationsByTag(tag);
+    } on MissingPluginException {
+      // Eraser native code not yet linked — needs flutter clean + run.
+    } on Object catch (e) {
+      log('Eraser($tag) failed: $e');
+    }
+    try {
+      final plugin = NotificationService().flutterLocalNotificationsPlugin;
+      final actives = await plugin.getActiveNotifications();
+      for (final n in actives) {
+        final id = n.id;
+        if (id == null) continue;
+        if (n.tag == tag) await plugin.cancel(id: id, tag: n.tag);
+      }
+    } on Object catch (e) {
+      log('Active-notification sweep failed: $e');
+    }
+  }
+
+  /// Refreshes the chat list. Deliberately does NOT touch [ChatBloc] —
+  /// the open chat view manages its own state via long-poll, and refreshing
+  /// it here would re-fetch the last-opened chat with setReadMarker=on
+  /// even if the user has already left.
   static void updateProviders(BuildContext context) {
     context.read<ChatListBloc>().refresh();
-    context.read<ChatBloc>().refresh();
   }
 
   /// Switches to the Talk tab. If [chatToken] is provided, also schedules

lib/routing/app_routes.dart

@@ -6,6 +6,9 @@ import 'package:persistent_bottom_nav_bar_v2/persistent_bottom_nav_bar_v2.dart';
 import '../api/marianumcloud/talk/room/get_room_response.dart';
 import '../main.dart';
 import '../model/account_data.dart';
+import '../notification/notification_tasks.dart';
+import '../share_intent/pending_share.dart';
+import '../share_intent/remote_file_ref.dart';
 import '../state/app/modules/app_modules.dart';
 import '../state/app/modules/chat/bloc/chat_bloc.dart';
 import '../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
@@ -17,6 +20,9 @@ import '../view/pages/more/roomplan/roomplan.dart';
 import '../view/pages/more/share/qr_share_view.dart';
 import '../view/pages/settings/modules_settings_page.dart';
 import '../view/pages/settings/settings.dart';
+import '../view/pages/share_intent/share_chat_picker.dart';
+import '../view/pages/share_intent/share_folder_picker.dart';
+import '../view/pages/share_intent/share_target_page.dart';
 import '../view/pages/talk/chat_view.dart';
 import '../view/pages/talk/details/message_reactions.dart';
 import '../view/pages/talk/talk_navigator.dart';
@@ -34,6 +40,11 @@ class AppRoutes {
   /// by `ChatList` once the matching room is loaded.
   static final ValueNotifier<String?> pendingChatToken = ValueNotifier(null);
 
+  /// Root-navigator observer used by [ChatView] to reclaim the global
+  /// [ChatBloc] on `didPopNext` after a stacked chat is popped.
+  static final RouteObserver<PageRoute<dynamic>> chatRouteObserver =
+      RouteObserver<PageRoute<dynamic>>();
+
   static void openFolder(BuildContext context, List<String> path) {
     pushScreen(context, withNavBar: false, screen: Files(path: path));
   }
@@ -42,11 +53,16 @@ class AppRoutes {
     BuildContext context,
     String localPath, {
     bool openExternal = false,
+    RemoteFileRef? remoteFile,
   }) {
     pushScreen(
       context,
       withNavBar: false,
-      screen: FileViewer(path: localPath, openExternal: openExternal),
+      screen: FileViewer(
+        path: localPath,
+        openExternal: openExternal,
+        remoteFile: remoteFile,
+      ),
     );
   }
 
@@ -90,6 +106,64 @@ class AppRoutes {
     pushScreen(context, withNavBar: false, screen: const Roomplan());
   }
 
+  static void openShareTarget(BuildContext context, PendingShare share) {
+    pushScreen(
+      context,
+      withNavBar: false,
+      screen: ShareTargetPage(share: share),
+    );
+  }
+
+  static void openShareChatPicker(BuildContext context, PendingShare share) {
+    pushScreen(
+      context,
+      withNavBar: false,
+      screen: ShareChatPicker.forExternalShare(share: share),
+    );
+  }
+
+  static void openShareFolderPicker(BuildContext context, PendingShare share) {
+    pushScreen(
+      context,
+      withNavBar: false,
+      screen: ShareFolderPicker.forExternalShare(share: share),
+    );
+  }
+
+  static void openInternalShareToChat(
+    BuildContext context,
+    RemoteFileRef file,
+  ) {
+    pushScreen(
+      context,
+      withNavBar: false,
+      screen: ShareChatPicker.forInternalShare(file: file),
+    );
+  }
+
+  static void openForwardMessageToChat(
+    BuildContext context, {
+    String? text,
+    RemoteFileRef? file,
+  }) {
+    pushScreen(
+      context,
+      withNavBar: false,
+      screen: ShareChatPicker.forMessageForward(text: text, file: file),
+    );
+  }
+
+  static void openInternalSaveToFolder(
+    BuildContext context,
+    RemoteFileRef file,
+  ) {
+    pushScreen(
+      context,
+      withNavBar: false,
+      screen: ShareFolderPicker.forInternalSave(file: file),
+    );
+  }
+
   static void openMessageReactions(
     BuildContext context,
     String token,
@@ -109,6 +183,12 @@ class AppRoutes {
     required UserAvatar avatar,
     bool overrideToSingleSubScreen = true,
   }) {
+    // Local mark only. Server-side mark is sent later from
+    // ChatBloc._loadChat with the freshly-fetched maxId — sending one
+    // here too with the chat list's possibly-stale room.lastMessage.id
+    // would race the fresh one and could regress the server cursor.
+    context.read<ChatListBloc>().markRoomAsRead(room.token, room.lastMessage.id);
+    NotificationTasks.clearNotificationsForChat(room.token);
     TalkNavigator.pushSplitView(
       context,
       ChatView(room: room, selfId: selfId, avatar: avatar),

lib/share_intent/internal_share_actions.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+import 'package:nextcloud/nextcloud.dart';
+
+import '../api/marianumcloud/webdav/webdav_api.dart';
+import '../widget/confirm_dialog.dart';
+import 'remote_file_ref.dart';
+
+/// Server-side WebDAV copy of [source] into [targetFolderPath]. On a 412
+/// conflict the user is asked whether to overwrite; on confirmation the call
+/// is retried with `overwrite: true`. Returns true when the file ended up at
+/// the target, false when the user cancelled.
+Future<bool> copyRemoteFileTo({
+  required BuildContext context,
+  required RemoteFileRef source,
+  required String targetFolderPath,
+}) async {
+  final webdav = await WebdavApi.webdav;
+  final dst = targetFolderPath.isEmpty
+      ? source.name
+      : '${targetFolderPath.replaceAll(RegExp(r'/+$'), '')}/${source.name}';
+  final src = PathUri.parse(source.path);
+  final dstUri = PathUri.parse(dst);
+
+  try {
+    await webdav.copy(src, dstUri);
+    return true;
+  } on DynamiteApiException catch (e) {
+    if (e.statusCode != 412) rethrow;
+    if (!context.mounted) return false;
+    final overwrite = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => ConfirmDialog(
+        title: 'Datei existiert bereits',
+        content:
+            '"${source.name}" existiert in /$targetFolderPath. Überschreiben?',
+        confirmButton: 'Überschreiben',
+        cancelButton: 'Abbrechen',
+        onConfirm: () => Navigator.of(ctx).pop(true),
+      ),
+    );
+    if (overwrite != true) return false;
+    await webdav.copy(src, dstUri, overwrite: true);
+    return true;
+  }
+}

lib/share_intent/pending_share.dart

@@ -0,0 +1,15 @@
+class PendingShare {
+  final List<String> filePaths;
+  final String? text;
+  final DateTime receivedAt;
+
+  const PendingShare({
+    required this.filePaths,
+    required this.text,
+    required this.receivedAt,
+  });
+
+  bool get hasFiles => filePaths.isNotEmpty;
+  bool get hasText => text != null && text!.isNotEmpty;
+  bool get isEmpty => !hasFiles && !hasText;
+}

lib/share_intent/remote_file_ref.dart

@@ -0,0 +1,20 @@
+import '../api/marianumcloud/talk/chat/get_chat_response.dart';
+import '../api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
+
+/// References a file that already lives on the Nextcloud server. Used by the
+/// in-app share/save flows that operate on remote paths instead of local
+/// cache files (no upload needed).
+class RemoteFileRef {
+  final String path;
+  final String name;
+
+  const RemoteFileRef({required this.path, required this.name});
+
+  /// Caller must verify `file.path != null` first — Talk message parameters
+  /// without a path (system events, mentions, polls) are not file refs.
+  factory RemoteFileRef.fromTalk(RichObjectString file) =>
+      RemoteFileRef(path: file.path!, name: file.name);
+
+  factory RemoteFileRef.fromCacheable(CacheableFile file) =>
+      RemoteFileRef(path: file.path, name: file.name);
+}

lib/share_intent/share_intent_listener.dart

@@ -0,0 +1,94 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:receive_sharing_intent/receive_sharing_intent.dart';
+
+import 'pending_share.dart';
+
+/// Bridges native share intents (Android ACTION_SEND, iOS Share Extension)
+/// into a single [ValueNotifier] that the app routes off of.
+class ShareIntentListener {
+  ShareIntentListener._();
+  static final ShareIntentListener instance = ShareIntentListener._();
+
+  static final ValueNotifier<PendingShare?> pending = ValueNotifier(null);
+
+  StreamSubscription<List<SharedMediaFile>>? _streamSub;
+  bool _initialized = false;
+
+  /// Reads the cold-start payload exactly once. Call from `main()` before
+  /// `runApp` so the share is queued before the UI mounts.
+  Future<void> initialize() async {
+    if (_initialized) return;
+    _initialized = true;
+    try {
+      final initial = await ReceiveSharingIntent.instance.getInitialMedia();
+      final share = _toPendingShare(initial);
+      if (share != null) pending.value = share;
+      await ReceiveSharingIntent.instance.reset();
+    } catch (e) {
+      debugPrint('ShareIntentListener.initialize failed: $e');
+    }
+  }
+
+  /// Subscribes to warm-share stream events. Safe to call multiple times.
+  void attach() {
+    _streamSub ??= ReceiveSharingIntent.instance.getMediaStream().listen(
+      (items) {
+        final share = _toPendingShare(items);
+        if (share != null) pending.value = share;
+      },
+      onError: (Object e) =>
+          debugPrint('ShareIntentListener stream error: $e'),
+    );
+  }
+
+  /// Cancels the warm-share subscription. The singleton survives, so a
+  /// subsequent [attach] re-subscribes.
+  void detach() {
+    _streamSub?.cancel();
+    _streamSub = null;
+  }
+
+  /// Discards the current share and removes any temp files the plugin copied
+  /// into the app cache. Idempotent.
+  void clear() {
+    final current = pending.value;
+    pending.value = null;
+    if (current != null) {
+      for (final path in current.filePaths) {
+        try {
+          final f = File(path);
+          if (f.existsSync()) f.deleteSync();
+        } catch (_) {
+          // best-effort cleanup; OS will reclaim cache eventually
+        }
+      }
+    }
+    unawaited(ReceiveSharingIntent.instance.reset());
+  }
+
+  PendingShare? _toPendingShare(List<SharedMediaFile> items) {
+    if (items.isEmpty) return null;
+    final files = <String>[];
+    final texts = <String>[];
+    for (final item in items) {
+      switch (item.type) {
+        case SharedMediaType.image:
+        case SharedMediaType.video:
+        case SharedMediaType.file:
+          files.add(item.path);
+        case SharedMediaType.text:
+        case SharedMediaType.url:
+          texts.add(item.path);
+      }
+    }
+    if (files.isEmpty && texts.isEmpty) return null;
+    return PendingShare(
+      filePaths: files,
+      text: texts.isEmpty ? null : texts.join('\n'),
+      receivedAt: DateTime.now(),
+    );
+  }
+}

lib/state/app/modules/chat/bloc/chat_bloc.dart

@@ -1,15 +1,53 @@
+import 'dart:async';
+import 'dart:developer';
+import 'dart:math' as math;
+
+import 'package:flutter/widgets.dart';
+
 import '../../../../../api/errors/error_mapper.dart';
+import '../../../../../api/marianumcloud/talk/chat/get_chat_response.dart';
+import '../../../../../api/marianumcloud/talk/chat/long_poll_chat.dart';
+import '../../../../../api/marianumcloud/talk/room/get_room_response.dart';
+import '../../../../../api/marianumcloud/talk/set_read_marker/set_read_marker.dart';
+import '../../../../../api/marianumcloud/talk/set_read_marker/set_read_marker_params.dart';
 import '../../../infrastructure/loadable_state/loading_error.dart';
 import '../../../infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_hydrated_bloc.dart';
 import '../../../infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_hydrated_bloc_event.dart';
+import '../../chat_list/bloc/chat_list_bloc.dart';
 import '../repository/chat_repository.dart';
 import 'chat_event.dart';
 import 'chat_state.dart';
 
 class ChatBloc
-    extends LoadableHydratedBloc<ChatEvent, ChatState, ChatRepository> {
+    extends LoadableHydratedBloc<ChatEvent, ChatState, ChatRepository>
+    with WidgetsBindingObserver {
+  final ChatListBloc? _chatListBloc;
+
+  String? _pollingToken;
+  int _backoffMs = 0;
+  int _lastKnownMessageId = 0;
+  bool _appResumed = true;
+
+  /// True only while a ChatView is mounted. Can't reuse `currentToken` —
+  /// clearing it on leaveChat races with setToken from didPopNext when
+  /// popping a stacked chat, causing spurious server read-markers on resume.
+  bool _chatViewActive = false;
+
+  bool get hasOpenChat => _chatViewActive;
+
   DateTime _lastTokenSet = DateTime.fromMillisecondsSinceEpoch(0);
 
+  ChatBloc({ChatListBloc? chatListBloc}) : _chatListBloc = chatListBloc {
+    WidgetsBinding.instance.addObserver(this);
+  }
+
+  @override
+  Future<void> close() {
+    WidgetsBinding.instance.removeObserver(this);
+    _stopLongPoll();
+    return super.close();
+  }
+
   @override
   ChatRepository repository() => ChatRepository();
 
@@ -33,24 +71,70 @@ class ChatBloc
   }
 
   void setToken(String token) {
+    _chatViewActive = true;
     if (token == (innerState?.currentToken ?? '')) {
       refresh();
       return;
     }
+    _stopLongPoll();
     add(Emit((s) => s.copyWith(currentToken: token, chatResponse: null)));
     add(RefetchStarted<ChatState>());
-    _loadChat(token);
+    _scheduleLoad(token);
-  }
-
-  void setReferenceMessageId(int? messageId) {
-    add(Emit((s) => s.copyWith(referenceMessageId: messageId)));
   }
 
   void refresh() {
     final token = innerState?.currentToken ?? '';
     if (token.isEmpty) return;
     add(RefetchStarted<ChatState>());
-    _loadChat(token);
+    _scheduleLoad(token);
+  }
+
+  void setReferenceMessageId(int? messageId) {
+    add(Emit((s) => s.copyWith(referenceMessageId: messageId)));
+  }
+
+  /// No-op when the bloc has already moved on to a different token: when
+  /// popping a stacked chat (B over A), A's didPopNext runs setToken(A)
+  /// before B's dispose fires.
+  void leaveChat(String fromToken) {
+    if ((innerState?.currentToken ?? '') != fromToken) return;
+    _chatViewActive = false;
+    _stopLongPoll();
+  }
+
+  Future<void> sendServerReadMarker(String token, int messageId) async {
+    try {
+      await SetReadMarker(
+        token,
+        true,
+        setReadMarkerParams: SetReadMarkerParams(lastReadMessage: messageId),
+      ).run();
+    } on Object catch (e) {
+      log('Server read-marker for $token failed: $e');
+    }
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    final wasResumed = _appResumed;
+    _appResumed = state == AppLifecycleState.resumed;
+    if (!_appResumed) {
+      _stopLongPoll();
+      return;
+    }
+    if (wasResumed) return;
+    final token = innerState?.currentToken ?? '';
+    if (token.isNotEmpty && _chatViewActive) refresh();
+  }
+
+  /// Microtask hop so the Bloc worker drains the preceding Emit before
+  /// any cache callback fires — a quick cache hit otherwise runs with
+  /// the previous token in state and fails stillCurrent().
+  void _scheduleLoad(String token) {
+    Future<void>.microtask(() {
+      if (isClosed) return;
+      _loadChat(token).then((_) => _startLongPoll(token));
+    });
   }
 
   Future<void> _loadChat(String token) async {
@@ -69,14 +153,25 @@ class ChatBloc
         token: token,
         onCacheData: (data) {
           if (!stillCurrent()) return;
-          // Cache hit: show data immediately but preserve lastFetch — the
+          // Skip cache paint over already-merged long-poll data — would
-          // cached payload may be stale and we don't want the UI to claim a
+          // visibly drop those messages until the network call resolves.
-          // fresh fetch just happened.
+          if (innerState?.chatResponse != null) return;
           add(Emit((s) => s.copyWith(chatResponse: data)));
         },
         onNetworkData: (data) {
+          // Mark runs even if no longer current — otherwise a quick
+          // navigation away leaves the server cursor stale. Cache check
+          // skips the POST when the cursor is already at maxId.
+          final maxId = _maxMessageId(data);
+          if (maxId > 0) {
+            final cached = _chatListBloc?.lastReadMessageFor(token);
+            if (cached == null || cached < maxId) {
+              unawaited(sendServerReadMarker(token, maxId));
+            }
+          }
           if (!stillCurrent()) return;
-          add(DataGathered((s) => s.copyWith(chatResponse: data)));
+          _applyChatResponse(data);
+          if (maxId > 0) _chatListBloc?.markRoomAsRead(token, maxId);
         },
         onError: (e) => capturedError = e,
       );
@@ -98,4 +193,106 @@ class ChatBloc
       );
     }
   }
+
+  void _startLongPoll(String token) {
+    if (!_appResumed) return;
+    if (_pollingToken == token) return;
+    _stopLongPoll();
+    _pollingToken = token;
+    _backoffMs = 0;
+    _lastKnownMessageId = _maxMessageId(innerState?.chatResponse);
+    unawaited(_pollLoop(token));
   }
+
+  void _stopLongPoll() {
+    _pollingToken = null;
+    _backoffMs = 0;
+  }
+
+  Future<void> _pollLoop(String token) async {
+    while (_pollingToken == token && !isClosed) {
+      try {
+        final response = await LongPollChat(
+          chatToken: token,
+          lastKnownMessageId: _lastKnownMessageId,
+        ).run();
+
+        if (_pollingToken != token || isClosed) return;
+        _backoffMs = 0;
+
+        if (response == null) continue;
+
+        final headerId = int.tryParse(
+          response.headers?[_kLongPollLastGivenHeader] ?? '',
+        );
+        if (headerId != null && headerId > _lastKnownMessageId) {
+          _lastKnownMessageId = headerId;
+        }
+
+        if (response.data.isEmpty) continue;
+        _applyChatResponse(response);
+        final maxId = _maxMessageId(response);
+        if (maxId > _lastKnownMessageId) _lastKnownMessageId = maxId;
+        // Long-poll's setReadMarker=on moved the server cursor; mirror locally.
+        final preview = _pickDisplayMessage(response);
+        if (preview != null) {
+          _chatListBloc?.applyIncomingMessage(token, preview);
+        } else {
+          _chatListBloc?.markRoomAsRead(token, _lastKnownMessageId);
+        }
+      } on Object catch (e) {
+        if (_pollingToken != token || isClosed) return;
+        log('LongPoll error for $token: $e');
+        _backoffMs = _backoffMs == 0 ? 2000 : math.min(_backoffMs * 2, 30000);
+        await Future.delayed(Duration(milliseconds: _backoffMs));
+      }
+    }
+  }
+
+  /// Dedups by id with newer-wins so server edits/deletes propagate.
+  void _applyChatResponse(GetChatResponse incoming) {
+    final current = innerState?.chatResponse;
+    if (current == null) {
+      add(DataGathered((s) => s.copyWith(chatResponse: incoming)));
+      return;
+    }
+    final byId = <int, GetChatResponseObject>{};
+    for (final m in current.data) {
+      byId[m.id] = m;
+    }
+    for (final m in incoming.data) {
+      byId[m.id] = m;
+    }
+    final merged = GetChatResponse(byId.values.toSet())
+      ..headers = incoming.headers;
+    add(DataGathered((s) => s.copyWith(chatResponse: merged)));
+  }
+
+  int _maxMessageId(GetChatResponse? response) {
+    if (response == null) return 0;
+    var max = 0;
+    for (final m in response.data) {
+      if (m.id > max) max = m.id;
+    }
+    return max;
+  }
+
+  /// Mirrors the server's own `lastMessage` selection (comments + voice only).
+  GetChatResponseObject? _pickDisplayMessage(GetChatResponse response) {
+    GetChatResponseObject? best;
+    for (final m in response.data) {
+      switch (m.messageType) {
+        case GetRoomResponseObjectMessageType.comment:
+        case GetRoomResponseObjectMessageType.voiceMessage:
+          if (best == null || m.id > best.id) best = m;
+        case GetRoomResponseObjectMessageType.deletedComment:
+        case GetRoomResponseObjectMessageType.system:
+        case GetRoomResponseObjectMessageType.command:
+          break;
+      }
+    }
+    return best;
+  }
+}
+
+const _kLongPollLastGivenHeader = 'x-chat-last-given';

lib/state/app/modules/chat_list/bloc/chat_list_bloc.dart

@@ -1,8 +1,10 @@
+import 'dart:async';
 import 'dart:developer';
 
 import 'package:flutter_app_badge/flutter_app_badge.dart';
 
 import '../../../../../api/errors/error_mapper.dart';
+import '../../../../../api/marianumcloud/talk/chat/get_chat_response.dart';
 import '../../../../../api/marianumcloud/talk/room/get_room_response.dart';
 import '../../../infrastructure/loadable_state/loading_error.dart';
 import '../../../infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_hydrated_bloc.dart';
@@ -15,6 +17,8 @@ class ChatListBloc
     extends
         LoadableHydratedBloc<ChatListEvent, ChatListState, ChatListRepository> {
   bool _forceRenew = false;
+  Timer? _autoRefreshTimer;
+  Duration? _autoRefreshInterval;
 
   @override
   void retry() {
@@ -22,6 +26,25 @@ class ChatListBloc
     super.retry();
   }
 
+  @override
+  Future<void> close() {
+    _autoRefreshTimer?.cancel();
+    return super.close();
+  }
+
+  /// Silent refresh — explicit pull-to-refresh and tab-activation are non-silent.
+  void setAutoRefreshInterval(Duration? interval) {
+    if (interval == _autoRefreshInterval) return;
+    _autoRefreshInterval = interval;
+    _autoRefreshTimer?.cancel();
+    _autoRefreshTimer = null;
+    if (interval == null) return;
+    _autoRefreshTimer = Timer.periodic(interval, (_) {
+      if (isClosed) return;
+      refresh(silent: true);
+    });
+  }
+
   @override
   ChatListRepository repository() => ChatListRepository();
 
@@ -51,8 +74,8 @@ class ChatListBloc
     if (capturedError != null) throw capturedError!;
   }
 
-  Future<void> refresh({bool renew = true}) async {
+  Future<void> refresh({bool renew = true, bool silent = false}) async {
-    add(RefetchStarted<ChatListState>());
+    if (!silent) add(RefetchStarted<ChatListState>());
     Object? capturedError;
     try {
       final rooms = await repo.data.getRooms(
@@ -82,6 +105,65 @@ class ChatListBloc
     await refresh();
   }
 
+  int? lastReadMessageFor(String token) {
+    final rooms = innerState?.rooms;
+    if (rooms == null) return null;
+    for (final room in rooms.data) {
+      if (room.token == token) return room.lastReadMessage;
+    }
+    return null;
+  }
+
+  /// Optimistic — server-side mark-as-read is the caller's job.
+  void markRoomAsRead(String token, int lastMessageId) {
+    _mutateRoom(token, (r) {
+      if (r.unreadMessages == 0 && r.lastReadMessage >= lastMessageId) {
+        return false;
+      }
+      r.unreadMessages = 0;
+      r.unreadMention = false;
+      r.unreadMentionDirect = false;
+      if (lastMessageId > r.lastReadMessage) r.lastReadMessage = lastMessageId;
+      return true;
+    });
+  }
+
+  /// Clears unread too — long-poll only feeds this in for an actively-open chat.
+  void applyIncomingMessage(String token, GetChatResponseObject message) {
+    _mutateRoom(token, (r) {
+      final wasRead =
+          r.unreadMessages == 0 && r.lastReadMessage >= message.id;
+      final hasNewer = r.lastMessage.id >= message.id;
+      if (wasRead && hasNewer) return false;
+      r.unreadMessages = 0;
+      r.unreadMention = false;
+      r.unreadMentionDirect = false;
+      if (message.id > r.lastReadMessage) r.lastReadMessage = message.id;
+      if (message.id > r.lastMessage.id) r.lastMessage = message;
+      if (message.timestamp > r.lastActivity) r.lastActivity = message.timestamp;
+      return true;
+    });
+  }
+
+  /// Re-wraps in a fresh [GetRoomResponse] so identity-based equality picks it up.
+  void _mutateRoom(
+    String token,
+    bool Function(GetRoomResponseObject room) mutator,
+  ) {
+    final rooms = innerState?.rooms;
+    if (rooms == null) return;
+    var changed = false;
+    final updated = rooms.data.map((r) {
+      if (r.token != token) return r;
+      if (mutator(r)) changed = true;
+      return r;
+    }).toSet();
+    if (!changed) return;
+    final newRooms = GetRoomResponse(updated)..headers = rooms.headers;
+    add(Emit((s) => s.copyWith(rooms: newRooms)));
+    _updateAppBadge(newRooms);
+  }
+
   void _updateAppBadge(GetRoomResponse rooms) {
     try {
       final unread = rooms.data.fold<int>(

lib/state/app/modules/files/bloc/files_bloc.dart

@@ -1,3 +1,5 @@
+import 'package:collection/collection.dart';
+
 import '../../../../../api/errors/error_mapper.dart';
 import '../../../../../api/marianumcloud/webdav/queries/list_files/list_files_response.dart';
 import '../../../infrastructure/loadable_state/loading_error.dart';
@@ -35,7 +37,9 @@ class FilesBloc
   Future<void> refresh() async {
     add(RefetchStarted<FilesState>());
     final path = innerState?.currentPath ?? initialPath;
-    await _query(path);
+    // Explicit user action — bypass the cache TTL so the root listing also
+    // refetches even though it is otherwise cached for a day.
+    await _query(path, renew: true);
   }
 
   Future<void> setPath(List<String> path) async {
@@ -50,15 +54,28 @@ class FilesBloc
     await refresh();
   }
 
-  Future<void> _query(List<String> path) async {
+  Future<void> _query(List<String> path, {bool renew = false}) async {
     final pathString = path.isEmpty ? '/' : path.join('/');
 
+    // Drop late results when [setPath] has navigated elsewhere or when the
+    // bloc has been disposed (e.g. share-flow picker closed mid-fetch). Both
+    // would otherwise corrupt state or hit "add after close" on the stream.
+    const pathEquality = ListEquality<String>();
+    bool isStale() {
+      if (isClosed) return true;
+      final inner = innerState;
+      if (inner == null) return false;
+      return !pathEquality.equals(inner.currentPath, path);
+    }
+
     Object? capturedError;
     ListFilesResponse? listing;
     try {
       listing = await repo.data.listFiles(
         pathString,
+        renew: renew,
         onCacheData: (cached) {
+          if (isStale()) return;
           // Cached payload arrives before the network call settles. Surface it
           // immediately via Emit so the listing is visible while isLoading
           // stays true and the top loading bar keeps spinning.
@@ -73,6 +90,8 @@ class FilesBloc
       capturedError = e;
     }
 
+    if (isStale()) return;
+
     if (listing != null) {
       listing.files.removeWhere(
         (file) => file.name.isEmpty || file.name == path.lastOrNull,

lib/state/app/modules/files/data_provider/files_data_provider.dart

@@ -11,16 +11,23 @@ class FilesDataProvider {
   /// network call is still pending. The Future itself resolves once both the
   /// cache lookup and the network attempt have settled, throwing if no payload
   /// could be obtained at all.
+  ///
+  /// Pass [renew] for explicit user-triggered reloads (pull-to-refresh, after
+  /// a rename / delete / move / upload). It bypasses the per-path TTL in
+  /// [ListFilesCache] so the root listing — which is otherwise cached for a
+  /// full day — still refetches when the user actively asks for it.
   Future<ListFilesResponse> listFiles(
     String path, {
     void Function(ListFilesResponse)? onCacheData,
     void Function(Object)? onError,
+    bool renew = false,
   }) => resolveFromCache<ListFilesResponse>(
     (onUpdate, onError) => ListFilesCache(
       path: path,
       onUpdate: onUpdate,
       onCacheData: onCacheData,
       onError: onError,
+      renew: renew,
     ),
     onError: onError,
     operationName: 'listFiles',

lib/view/login/login.dart

@@ -1,6 +1,9 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
+import '../../background/widget_background_task.dart';
 import '../../state/app/modules/account/bloc/account_bloc.dart';
 import '../../state/app/modules/account/bloc/account_state.dart';
 import '../../theming/light_app_theme.dart';
@@ -34,6 +37,11 @@ class _LoginState extends State<Login> {
 
   void _onLoginSuccess() {
     context.read<AccountBloc>().setStatus(AccountStatus.loggedIn);
+    // Re-register the periodic refresh (cancelAll runs on logout) and kick
+    // off an immediate one-off so the widget populates within seconds
+    // instead of waiting up to 30 minutes for the next periodic slot.
+    unawaited(WidgetBackgroundTask.initialize());
+    unawaited(WidgetBackgroundTask.requestImmediateRefresh());
   }
 
   @override

lib/view/login/login_controller.dart

@@ -7,6 +7,7 @@ import '../../api/errors/error_mapper.dart';
 import '../../api/marianumcloud/talk/room/get_room.dart';
 import '../../api/marianumcloud/talk/room/get_room_params.dart';
 import '../../model/account_data.dart';
+import '../../widget_data/widget_sync.dart';
 
 /// Owns the login flow's transient state (loading, last error) so it can be
 /// driven from a thin Stateful view and unit-tested without a widget tree.
@@ -31,6 +32,11 @@ class LoginController extends ChangeNotifier {
     final user = username.trim().toLowerCase();
     try {
       await AccountData().removeData();
+      // Drop any cached widget snapshot from a previous account before the
+      // new credentials populate it — otherwise a re-login with a different
+      // user briefly shows the previous owner's timetable on the home screen.
+      await WidgetSync.clear();
+      await WidgetSync.triggerUpdate();
       await AccountData().setData(user, password);
       await GetRoom(GetRoomParams(includeStatus: false)).run();
       _loading = false;

lib/view/login/widgets/login_branding.dart

@@ -45,7 +45,7 @@ class LoginDisclaimer extends StatelessWidget {
   Widget build(BuildContext context) => Padding(
     padding: const EdgeInsets.symmetric(horizontal: 8),
     child: Text(
-      'Inoffizieller Nextcloud & Webuntis Client. Wird nicht vom Marianum betrieben. Keine Gewähr für Vollständigkeit, Richtigkeit und Aktualität.',
+      'Inoffizieller Marianum-Cloud & Webuntis Client. Wird nicht vom Marianum betrieben. Keine Gewähr für Vollständigkeit, Richtigkeit und Aktualität.',
       textAlign: TextAlign.center,
       style: TextStyle(
         color: Colors.white.withValues(alpha: 0.75),

lib/view/pages/files/files.dart

@@ -14,6 +14,7 @@ import '../../../utils/cache_invalidation_bus.dart';
 import '../../../widget/placeholder_view.dart';
 import 'data/sort_options.dart';
 import 'files_upload_dialog.dart';
+import 'search/files_search_delegate.dart';
 import 'widgets/add_file_menu.dart';
 import 'widgets/clipboard_banner.dart';
 import 'widgets/file_element.dart';
@@ -117,6 +118,15 @@ class _FilesViewState extends State<_FilesView> {
               });
             },
           ),
+          IconButton(
+            tooltip: 'Suchen',
+            icon: const Icon(Icons.search),
+            onPressed: () async {
+              final delegate = FilesSearchDelegate(pathScope: widget.path);
+              await showSearch<void>(context: context, delegate: delegate);
+              delegate.disposeController();
+            },
+          ),
         ],
       ),
       floatingActionButton: FloatingActionButton(

lib/view/pages/files/search/files_search_controller.dart

@@ -0,0 +1,157 @@
+import 'package:flutter/foundation.dart';
+
+import '../../../../api/marianumcloud/search/search_files.dart';
+import '../../../../api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
+import '../../../../utils/debouncer.dart';
+import 'local_cache_search.dart';
+
+/// Holds the live state of a Files-search session: current query, the latest
+/// local-cache hits (synchronous), the latest server hits (asynchronous,
+/// debounced), and loading/error flags. Notifies listeners whenever any of
+/// these change so the UI can rebuild incrementally as results stream in.
+class FilesSearchController extends ChangeNotifier {
+  FilesSearchController({List<String>? initialPathScope})
+    : _pathScope = List<String>.from(initialPathScope ?? const []);
+
+  static const Duration _serverDebounce = Duration(seconds: 1);
+  final String _debounceTag =
+      'files-search-${DateTime.now().microsecondsSinceEpoch}';
+  final SearchFiles _api = SearchFiles();
+
+  String _query = '';
+  List<String> _pathScope;
+  List<CacheableFile> _cacheResults = const [];
+  List<CacheableFile> _serverResults = const [];
+  bool _serverLoading = false;
+  Object? _serverError;
+  int _serverEpoch = 0;
+  bool _disposed = false;
+
+  /// Guards against the race where the search delegate is closed (and the
+  /// controller disposed) while a debounced cache scan or server call is
+  /// still in flight: their late `notifyListeners()` would otherwise throw
+  /// on a disposed `ChangeNotifier`.
+  void _safeNotify() {
+    if (_disposed) return;
+    notifyListeners();
+  }
+
+  String get query => _query;
+  List<String> get pathScope => List.unmodifiable(_pathScope);
+  bool get isScoped => _pathScope.isNotEmpty;
+  List<CacheableFile> get cacheResults => _cacheResults;
+  List<CacheableFile> get serverResults => _serverResults;
+  bool get serverLoading => _serverLoading;
+  Object? get serverError => _serverError;
+
+  /// Combined, deduplicated result list (cache hits first, then any
+  /// server-only hits) — handy for empty-state checks. Dedup key is the
+  /// WebDAV path.
+  List<CacheableFile> get combinedResults {
+    if (_cacheResults.isEmpty) return _serverResults;
+    if (_serverResults.isEmpty) return _cacheResults;
+    final seen = <String>{for (final f in _cacheResults) f.path};
+    return [
+      ..._cacheResults,
+      ..._serverResults.where((f) => seen.add(f.path)),
+    ];
+  }
+
+  Future<void> setQuery(String value) async {
+    if (value == _query) return;
+    _query = value;
+    // Bumping the epoch up front invalidates any in-flight server call from
+    // a previous query, so its late response cannot toggle `_serverLoading`
+    // off while a fresh search is queued behind the debounce.
+    final epoch = ++_serverEpoch;
+    if (_query.trim().isEmpty) {
+      Debouncer.cancel(_debounceTag);
+      _cacheResults = const [];
+      _serverResults = const [];
+      _serverLoading = false;
+      _serverError = null;
+      _safeNotify();
+      return;
+    }
+    // Show loading immediately — even before the (typically fast) cache
+    // scan resolves — so the indicator is visible the moment the user
+    // starts typing rather than after the first await hop.
+    _serverLoading = true;
+    _serverError = null;
+    _safeNotify();
+
+    final cacheHits = await searchLocalCaches(_query, pathScope: _pathScope);
+    if (epoch != _serverEpoch) return;
+    _cacheResults = cacheHits;
+    _safeNotify();
+    _scheduleServerCall();
+  }
+
+  /// Drops the path filter and re-runs the current search globally. Used by
+  /// the empty-state "Im Hauptverzeichnis suchen" button.
+  Future<void> searchEverywhere() async {
+    if (!isScoped) return;
+    _pathScope = const [];
+    final epoch = ++_serverEpoch;
+    if (_query.trim().isEmpty) {
+      _safeNotify();
+      return;
+    }
+    _serverLoading = true;
+    _serverError = null;
+    _safeNotify();
+
+    final cacheHits = await searchLocalCaches(_query);
+    if (epoch != _serverEpoch) return;
+    _cacheResults = cacheHits;
+    _safeNotify();
+    _scheduleServerCall();
+  }
+
+  /// Re-runs the current server query immediately, bypassing the debounce.
+  /// Wired to the `LoadableStateErrorScreen` "Erneut versuchen" button.
+  void retry() {
+    if (_query.trim().isEmpty) return;
+    ++_serverEpoch;
+    Debouncer.cancel(_debounceTag);
+    _serverLoading = true;
+    _serverError = null;
+    _safeNotify();
+    _runServerCall();
+  }
+
+  void _scheduleServerCall() {
+    Debouncer.debounce(_debounceTag, _serverDebounce, _runServerCall);
+  }
+
+  Future<void> _runServerCall() async {
+    final epoch = _serverEpoch;
+    final term = _query;
+    final scopePrefix = _pathScope.isEmpty ? '' : '${_pathScope.join('/')}/';
+    try {
+      final response = await _api.run(term: term);
+      if (epoch != _serverEpoch) return;
+      _serverResults = response.entries
+          .map((e) => e.toCacheable())
+          .whereType<CacheableFile>()
+          .where((f) => scopePrefix.isEmpty || f.path.startsWith(scopePrefix))
+          .toList();
+      _serverLoading = false;
+      _serverError = null;
+      _safeNotify();
+    } on Object catch (e) {
+      if (epoch != _serverEpoch) return;
+      _serverResults = const [];
+      _serverLoading = false;
+      _serverError = e;
+      _safeNotify();
+    }
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    Debouncer.cancel(_debounceTag);
+    super.dispose();
+  }
+}

lib/view/pages/files/search/files_search_delegate.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+
+import 'files_search_controller.dart';
+import 'files_search_results.dart';
+
+/// Material `SearchDelegate` for the Files module — opens via the magnifier
+/// in `FilesPage`'s AppBar (mirroring `SearchMarianumMessages`). Owns one
+/// [FilesSearchController]; cache + server hits stream into the result list
+/// as the user types.
+class FilesSearchDelegate extends SearchDelegate<void> {
+  final FilesSearchController _controller;
+
+  FilesSearchDelegate({required List<String> pathScope})
+    : _controller = FilesSearchController(initialPathScope: pathScope),
+      super(searchFieldLabel: 'Dateien suchen');
+
+  /// Must be called by the host widget after `showSearch` returns so the
+  /// controller's listeners and pending debounce timers are released.
+  void disposeController() => _controller.dispose();
+
+  @override
+  List<Widget>? buildActions(BuildContext context) => [
+    if (query.isNotEmpty)
+      IconButton(
+        tooltip: 'Suche leeren',
+        icon: const Icon(Icons.clear),
+        onPressed: () {
+          query = '';
+        },
+      ),
+  ];
+
+  @override
+  Widget? buildLeading(BuildContext context) => IconButton(
+    icon: const Icon(Icons.arrow_back),
+    onPressed: () => close(context, null),
+  );
+
+  @override
+  Widget buildResults(BuildContext context) {
+    _controller.setQuery(query);
+    return FilesSearchResults(
+      controller: _controller,
+      onResultTap: () => close(context, null),
+    );
+  }
+
+  @override
+  Widget buildSuggestions(BuildContext context) {
+    _controller.setQuery(query);
+    return FilesSearchResults(
+      controller: _controller,
+      onResultTap: () => close(context, null),
+    );
+  }
+}

lib/view/pages/files/search/files_search_results.dart

@@ -0,0 +1,193 @@
+import 'package:flutter/material.dart';
+
+import '../../../../api/errors/error_mapper.dart';
+import '../../../../api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
+import '../../../../routing/app_routes.dart';
+import '../../../../state/app/infrastructure/loadable_state/bloc/loadable_state_bloc.dart';
+import '../../../../state/app/infrastructure/loadable_state/bloc/loadable_state_state.dart';
+import '../../../../state/app/infrastructure/loadable_state/view/loadable_state_background_loading.dart';
+import '../../../../state/app/infrastructure/loadable_state/view/loadable_state_error_bar.dart';
+import '../../../../state/app/infrastructure/loadable_state/view/loadable_state_error_screen.dart';
+import '../../../../state/app/infrastructure/loadable_state/view/loadable_state_primary_loading.dart';
+import '../../../../state/app/infrastructure/utility_widgets/bloc_module.dart';
+import '../../../../widget/placeholder_view.dart';
+import '../widgets/file_element.dart';
+import 'files_search_controller.dart';
+
+/// Renders the live state of a [FilesSearchController]. Wraps everything in a
+/// `LoadableStateBloc` module so the search reuses the standard primary /
+/// background loading and error views from the rest of the app.
+class FilesSearchResults extends StatelessWidget {
+  final FilesSearchController controller;
+  final VoidCallback? onResultTap;
+
+  const FilesSearchResults({
+    required this.controller,
+    this.onResultTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) =>
+      BlocModule<LoadableStateBloc, LoadableStateState>(
+        create: (_) => LoadableStateBloc(),
+        child: (context, bloc, _) {
+          bloc.reFetch = controller.retry;
+          return ListenableBuilder(
+            listenable: controller,
+            builder: (context, _) => _buildBody(context),
+          );
+        },
+      );
+
+  Widget _buildBody(BuildContext context) {
+    if (controller.query.trim().isEmpty) {
+      return const PlaceholderView(
+        icon: Icons.search,
+        text: 'Tippen, um in Dateien zu suchen.',
+      );
+    }
+    final combined = controller.combinedResults;
+    final hasContent = combined.isNotEmpty;
+    final hasError = controller.serverError != null;
+    final isLoading = controller.serverLoading;
+
+    final showPrimaryLoading = isLoading && !hasContent;
+    final showBackgroundLoading = isLoading && hasContent;
+    final showErrorScreen = hasError && !hasContent && !isLoading;
+    final showErrorBar = hasError && hasContent;
+    final showEmpty = !hasContent && !hasError && !isLoading;
+
+    final errorMessage = hasError ? errorToUserMessage(controller.serverError) : null;
+
+    return Column(
+      children: [
+        LoadableStateErrorBar(
+          visible: showErrorBar,
+          hasContent: hasContent,
+          message: errorMessage,
+        ),
+        // Background loading sits *outside* the result Stack so the linear
+        // progress bar is not painted over by the opaque ListView/ListTiles
+        // when cache hits are already on screen and the server is still
+        // working. The widget collapses to zero height when invisible.
+        LoadableStateBackgroundLoading(visible: showBackgroundLoading),
+        Expanded(
+          child: Stack(
+            children: [
+              LoadableStatePrimaryLoading(visible: showPrimaryLoading),
+              LoadableStateErrorScreen(
+                visible: showErrorScreen,
+                message: errorMessage,
+              ),
+              if (showEmpty) _emptyState(context),
+              if (hasContent) _resultList(context, combined),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _emptyState(BuildContext context) => PlaceholderView(
+    icon: Icons.search_off_outlined,
+    text: 'Keine Treffer gefunden.',
+    button: controller.isScoped
+        ? FilledButton.icon(
+            onPressed: controller.searchEverywhere,
+            icon: const Icon(Icons.travel_explore),
+            label: const Text('Im Hauptverzeichnis suchen'),
+          )
+        : null,
+  );
+
+  Widget _resultList(BuildContext context, List<CacheableFile> combined) {
+    final groups = _groupByParent(combined);
+    final orderedKeys = groups.keys.toList()..sort();
+    final items = <Widget>[];
+    for (final folder in orderedKeys) {
+      final segments = _segmentsOf(folder);
+      items.add(
+        _FolderHeader(
+          folder: folder,
+          onOpen: () {
+            onResultTap?.call();
+            AppRoutes.openFolder(context, segments);
+          },
+        ),
+      );
+      for (final file in groups[folder]!) {
+        items.add(
+          FileElement(
+            file,
+            segments,
+            controller.retry,
+            highlight: controller.query,
+          ),
+        );
+      }
+    }
+    return ListView(padding: EdgeInsets.zero, children: items);
+  }
+
+  Map<String, List<CacheableFile>> _groupByParent(List<CacheableFile> files) {
+    final map = <String, List<CacheableFile>>{};
+    for (final file in files) {
+      map.putIfAbsent(_parentOf(file), () => []).add(file);
+    }
+    return map;
+  }
+
+  String _parentOf(CacheableFile file) {
+    final stripped = file.path.replaceAll(RegExp(r'^/+|/+$'), '');
+    final segments = stripped.split('/');
+    if (segments.length <= 1) return '/';
+    segments.removeLast();
+    return '/${segments.join('/')}';
+  }
+
+  List<String> _segmentsOf(String folder) {
+    final stripped = folder.replaceAll(RegExp(r'^/+|/+$'), '');
+    if (stripped.isEmpty) return const [];
+    return stripped.split('/');
+  }
+}
+
+class _FolderHeader extends StatelessWidget {
+  final String folder;
+  final VoidCallback onOpen;
+  const _FolderHeader({required this.folder, required this.onOpen});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return Container(
+      width: double.infinity,
+      height: 38,
+      color: theme.colorScheme.surfaceContainer,
+      padding: const EdgeInsets.only(left: 16),
+      child: Row(
+        children: [
+          Expanded(
+            child: Text(
+              folder,
+              style: theme.textTheme.labelLarge?.copyWith(
+                color: theme.colorScheme.primary,
+                fontWeight: FontWeight.w700,
+                letterSpacing: 1.2,
+              ),
+              overflow: TextOverflow.ellipsis,
+            ),
+          ),
+          IconButton(
+            tooltip: 'Ordner öffnen',
+            iconSize: 20,
+            visualDensity: VisualDensity.compact,
+            icon: const Icon(Icons.folder_open_outlined),
+            onPressed: onOpen,
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/view/pages/files/search/local_cache_search.dart

@@ -0,0 +1,65 @@
+import 'dart:convert';
+
+import 'package:localstore/localstore.dart';
+
+import '../../../../api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
+import '../../../../api/marianumcloud/webdav/queries/list_files/list_files_response.dart';
+import '../../../../api/request_cache.dart';
+
+/// Document key prefix used by `ListFilesCache._documentId`.
+const String _folderCachePrefix = 'wd-folder-';
+
+/// Scans every cached folder listing in Localstore and returns files/folders
+/// whose name contains [query] (case-insensitive).
+///
+/// [pathScope] restricts results to entries whose WebDAV path starts with
+/// the given folder. Pass an empty list (or null) to search globally.
+///
+/// [docs] is an injection seam for tests — production callers leave it null
+/// so the helper reads from the real Localstore.
+Future<List<CacheableFile>> searchLocalCaches(
+  String query, {
+  List<String>? pathScope,
+  Map<String, dynamic>? docs,
+}) async {
+  final trimmed = query.trim();
+  if (trimmed.isEmpty) return const [];
+  final needle = trimmed.toLowerCase();
+  final scopePrefix = pathScope == null || pathScope.isEmpty
+      ? ''
+      : '${pathScope.join('/')}/';
+
+  final raw =
+      docs ??
+      await Localstore.instance.collection(RequestCache.collection).get();
+  if (raw == null || raw.isEmpty) return const [];
+
+  final results = <String, CacheableFile>{};
+  for (final entry in raw.entries) {
+    final docKey = entry.key.split('/').last;
+    if (!docKey.startsWith(_folderCachePrefix)) continue;
+
+    final value = entry.value;
+    if (value is! Map) continue;
+    final json = value['json'];
+    if (json is! String) continue;
+
+    final ListFilesResponse listing;
+    try {
+      listing = ListFilesResponse.fromJson(
+        jsonDecode(json) as Map<String, dynamic>,
+      );
+    } on Object {
+      continue;
+    }
+
+    for (final file in listing.files) {
+      if (!file.name.toLowerCase().contains(needle)) continue;
+      if (scopePrefix.isNotEmpty && !file.path.startsWith(scopePrefix)) {
+        continue;
+      }
+      results[file.path] ??= file;
+    }
+  }
+  return results.values.toList();
+}

lib/view/pages/files/widgets/add_file_menu.dart

@@ -21,7 +21,7 @@ void showAddFileSheet(
         title: const Text('Ordner erstellen'),
         onTap: () {
           Navigator.of(sheetCtx).pop();
-          _showCreateFolderDialog(context, bloc);
+          showCreateFolderDialog(context, bloc);
         },
       ),
       ListTile(
@@ -56,7 +56,7 @@ void showAddFileSheet(
   );
 }
 
-void _showCreateFolderDialog(BuildContext context, FilesBloc bloc) {
+void showCreateFolderDialog(BuildContext context, FilesBloc bloc) {
   final inputController = TextEditingController();
   showDialog(
     context: context,

lib/view/pages/files/widgets/file_element.dart

@@ -7,19 +7,32 @@ import '../../../../api/marianumcloud/webdav/webdav_api.dart';
 import '../../../../extensions/date_time.dart';
 import '../../../../model/endpoint_data.dart';
 import '../../../../routing/app_routes.dart';
+import '../../../../share_intent/remote_file_ref.dart';
 import '../../../../utils/download_manager.dart';
 import '../../../../utils/file_clipboard.dart';
 import '../../../../widget/centered_leading.dart';
 import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/details_bottom_sheet.dart';
 import '../../../../widget/info_dialog.dart';
+import '../../talk/widgets/highlighted_linkify.dart';
 import 'file_details_sheet.dart';
 
 class FileElement extends StatefulWidget {
   final CacheableFile file;
   final List<String> path;
   final void Function() refetch;
-  const FileElement(this.file, this.path, this.refetch, {super.key});
+
+  /// When non-null, occurrences of this string in the file name are visually
+  /// highlighted in the tile title. Used by the Files search delegate.
+  final String? highlight;
+
+  const FileElement(
+    this.file,
+    this.path,
+    this.refetch, {
+    this.highlight,
+    super.key,
+  });
 
   @override
   State<FileElement> createState() => _FileElementState();
@@ -71,7 +84,11 @@ class _FileElementState extends State<FileElement> {
     if (status is DownloadDone) {
       DownloadManager.instance.clear(widget.file.path);
       _detachJob();
-      AppRoutes.openFileViewer(context, status.localPath);
+      AppRoutes.openFileViewer(
+        context,
+        status.localPath,
+        remoteFile: RemoteFileRef.fromCacheable(widget.file),
+      );
       setState(() {});
     } else if (status is DownloadFailed) {
       final message = status.message;
@@ -113,7 +130,7 @@ class _FileElementState extends State<FileElement> {
     );
   }
 
-  Widget _subtitle() {
+  Widget? _subtitle() {
     final status = _job?.status.value;
     if (status is DownloadInProgress) {
       return Row(
@@ -130,10 +147,16 @@ class _FileElementState extends State<FileElement> {
         ],
       );
     }
-    final modified = widget.file.modifiedAt ?? DateTime.now();
+    final modified = widget.file.modifiedAt;
-    return widget.file.isDirectory
+    final size = widget.file.size;
-        ? Text('geändert ${modified.formatRelative()}')
+    if (widget.file.isDirectory) {
-        : Text('${filesize(widget.file.size)}, ${modified.formatRelative()}');
+      if (modified == null) return null;
+      return Text('geändert ${modified.formatRelative()}');
+    }
+    if (size == null && modified == null) return null;
+    if (size == null) return Text(modified!.formatRelative());
+    if (modified == null) return Text(filesize(size));
+    return Text('${filesize(size)}, ${modified.formatRelative()}');
   }
 
   void _onTap() {
@@ -299,6 +322,18 @@ class _FileElementState extends State<FileElement> {
             _putOnClipboard(copy: true);
           },
         ),
+        if (!widget.file.isDirectory)
+          ListTile(
+            leading: const CenteredLeading(Icon(Icons.chat_bubble_outline)),
+            title: const Text('Im Talk-Chat teilen'),
+            onTap: () {
+              Navigator.of(sheetCtx).pop();
+              AppRoutes.openInternalShareToChat(
+                context,
+                RemoteFileRef.fromCacheable(widget.file),
+              );
+            },
+          ),
         ListTile(
           leading: const CenteredLeading(Icon(Icons.delete_outline)),
           title: const Text('Löschen'),
@@ -311,12 +346,36 @@ class _FileElementState extends State<FileElement> {
     );
   }
 
+  Widget _title(BuildContext context) {
+    final base =
+        Theme.of(context).textTheme.bodyLarge ??
+        DefaultTextStyle.of(context).style;
+    if (widget.highlight == null || widget.highlight!.trim().isEmpty) {
+      return Text(
+        widget.file.name,
+        maxLines: 2,
+        overflow: TextOverflow.ellipsis,
+      );
+    }
+    return Text.rich(
+      TextSpan(
+        children: buildHighlightedSpans(
+          text: widget.file.name,
+          query: widget.highlight,
+          baseStyle: base,
+        ),
+      ),
+      maxLines: 2,
+      overflow: TextOverflow.ellipsis,
+    );
+  }
+
   @override
   Widget build(BuildContext context) => ListTile(
     leading: CenteredLeading(
       Icon(widget.file.isDirectory ? Icons.folder : Icons.description_outlined),
     ),
-    title: Text(widget.file.name, maxLines: 2, overflow: TextOverflow.ellipsis),
+    title: _title(context),
     subtitle: _subtitle(),
     trailing: Icon(widget.file.isDirectory ? Icons.arrow_right : null),
     onTap: _onTap,

lib/view/pages/marianum_dates/widgets/event_list_tile.dart

@@ -102,6 +102,7 @@ class MarianumDateRow extends StatelessWidget {
                   initialDescription: event.description,
                   initialStart: event.start,
                   initialEnd: event.end,
+                  initialAllDay: event.isAllDay,
                 ),
                 barrierDismissible: false,
               ),

lib/view/pages/marianum_message/marianum_message_list_view.dart

@@ -6,6 +6,7 @@ import '../../../state/app/infrastructure/loadable_state/view/loadable_state_con
 import '../../../state/app/infrastructure/utility_widgets/bloc_module.dart';
 import '../../../state/app/modules/marianum_message/bloc/marianum_message_bloc.dart';
 import '../../../state/app/modules/marianum_message/bloc/marianum_message_state.dart';
+import 'search_marianum_messages.dart';
 
 class MarianumMessageListView extends StatelessWidget {
   const MarianumMessageListView({super.key});
@@ -16,7 +17,25 @@ class MarianumMessageListView extends StatelessWidget {
   ) => BlocModule<MarianumMessageBloc, LoadableState<MarianumMessageState>>(
     create: (context) => MarianumMessageBloc(),
     child: (context, bloc, state) => Scaffold(
-      appBar: AppBar(title: const Text('Marianum Message')),
+      appBar: AppBar(
+        title: const Text('Marianum Message'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.search),
+            onPressed: () {
+              final list = bloc.state.data?.messageList;
+              if (list == null) return;
+              showSearch(
+                context: context,
+                delegate: SearchMarianumMessages(
+                  base: list.base,
+                  messages: list.messages,
+                ),
+              );
+            },
+          ),
+        ],
+      ),
       body: LoadableStateConsumer<MarianumMessageBloc, MarianumMessageState>(
         child: (state, loading) => ListView.builder(
           itemCount: state.messageList.messages.length,

lib/view/pages/marianum_message/search_marianum_messages.dart

@@ -0,0 +1,66 @@
+import 'package:flutter/material.dart';
+
+import '../../../routing/app_routes.dart';
+import '../../../state/app/modules/marianum_message/bloc/marianum_message_state.dart';
+import '../../../widget/placeholder_view.dart';
+
+class SearchMarianumMessages extends SearchDelegate<MarianumMessage?> {
+  final String base;
+  final List<MarianumMessage> messages;
+
+  SearchMarianumMessages({required this.base, required this.messages});
+
+  List<MarianumMessage> _matches() {
+    final q = query.trim().toLowerCase();
+    if (q.isEmpty) return messages;
+    return messages.where((m) {
+      return m.name.toLowerCase().contains(q) ||
+          m.date.toLowerCase().contains(q);
+    }).toList();
+  }
+
+  @override
+  List<Widget>? buildActions(BuildContext context) => [
+    if (query.isNotEmpty)
+      IconButton(onPressed: () => query = '', icon: const Icon(Icons.delete)),
+  ];
+
+  @override
+  Widget? buildLeading(BuildContext context) => IconButton(
+    icon: const Icon(Icons.arrow_back),
+    onPressed: () => close(context, null),
+  );
+
+  @override
+  Widget buildResults(BuildContext context) {
+    final matches = _matches();
+    if (matches.isEmpty) {
+      return const PlaceholderView(
+        icon: Icons.search_off_outlined,
+        text: 'Keine Treffer',
+      );
+    }
+    return ListView.builder(
+      itemCount: matches.length,
+      itemBuilder: (_, i) {
+        final message = matches[i];
+        return ListTile(
+          leading: const Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [Icon(Icons.newspaper)],
+          ),
+          title: Text(message.name, overflow: TextOverflow.ellipsis),
+          subtitle: Text('vom ${message.date}'),
+          trailing: const Icon(Icons.arrow_right),
+          onTap: () {
+            close(context, message);
+            AppRoutes.openMarianumMessage(context, base, message);
+          },
+        );
+      },
+    );
+  }
+
+  @override
+  Widget buildSuggestions(BuildContext context) => buildResults(context);
+}

lib/view/pages/settings/sections/about_section.dart

@@ -67,12 +67,12 @@ class AboutSection extends StatelessWidget {
       applicationIcon: const Icon(Icons.apps),
       applicationName: 'MarianumMobile',
       applicationVersion:
-          '${appInfo.appName}\n\nPackage: ${appInfo.packageName}\nVersion: ${appInfo.version}\nBuild: ${appInfo.buildNumber}',
+          '${appInfo.appName}\n\n${appInfo.packageName}\nVersion: ${appInfo.version}\nBuild/Relase-nummer: ${appInfo.buildNumber}',
       applicationLegalese:
-          'Dies ist ein Inoffizieller Nextcloud & Webuntis Client und wird nicht vom Marianum selbst betrieben.\n'
+          'Dies ist ein Inoffizieller Marianum-Cloud & Webuntis Client und wird nicht vom Marianum selbst betrieben.\n'
           'Keinerlei Gewähr für Vollständigkeit, Richtigkeit und Aktualität!\n\n'
-          "${kReleaseMode ? "Production" : "Development"} build\n"
+          "${kReleaseMode ? "Production" : "Development ${kProfileMode ? "(Profiling)" : "(Debug)"}"} build.\n\n"
-          'Marianum Fulda 2023-${Jiffy.now().year}\nElias Müller',
+          'Marianum Fulda 2019-2020, 2023-${Jiffy.now().year}\nElias Müller',
     );
   }
 
@@ -82,7 +82,7 @@ class AboutSection extends StatelessWidget {
       ListTile(
         leading: const CenteredLeading(Icon(Icons.school_outlined)),
         title: const Text('Infos zum Marianum Fulda'),
-        subtitle: const Text('Für Talk-Chats und Dateien'),
+        subtitle: const Text('Für Talk-Chats und Cloud-Dateien'),
         trailing: const Icon(Icons.arrow_right),
         onTap: () => PrivacyInfo(
           providerText: 'Marianum',
@@ -92,7 +92,7 @@ class AboutSection extends StatelessWidget {
       ),
       ListTile(
         leading: const CenteredLeading(Icon(Icons.date_range_outlined)),
-        title: const Text('Infos zu Web-/ Untis'),
+        title: const Text('Infos zu (Web) Untis'),
         subtitle: const Text('Für den Stundenplan'),
         trailing: const Icon(Icons.arrow_right),
         onTap: () => PrivacyInfo(
@@ -106,7 +106,7 @@ class AboutSection extends StatelessWidget {
           Icon(Icons.send_time_extension_outlined),
         ),
         title: const Text('Infos zu mhsl'),
-        subtitle: const Text('Für Countdowns, Marianum Message und mehr'),
+        subtitle: const Text('Für Push, Kalendertermine, Marianum Message und mehr'),
         trailing: const Icon(Icons.arrow_right),
         onTap: () => PrivacyInfo(
           providerText: 'mhsl',

lib/view/pages/settings/sections/talk_section.dart

@@ -60,7 +60,7 @@ class TalkSection extends StatelessWidget {
     context,
     "Aufgrund technischer Limitationen müssen Push-Nachrichten über einen externen Server - hier 'mhsl.eu' (Author dieser App) - erfolgen.\n\n"
     'Wenn Push aktiviert wird, werden deine Zugangsdaten und ein Token verschlüsselt an den Betreiber gesendet und von ihm unverschlüsselt gespeichert.\n\n'
-    'Der extene Server verwendet die Zugangsdaten um sich maschinell in Nextcloud Talk anzumelden und via Websockets auf neue Nachrichten zu warten.\n\n'
+    'Der extene Server verwendet die Zugangsdaten um sich maschinell in Talk anzumelden und via Websockets auf neue Nachrichten zu warten.\n\n'
     'Wenn eine neue Nachricht eintrifft wird dein Telefon via FBC-Messaging (Google Firebase Push) vom externen Server benachrichtigt.\n\n'
     'Behalte im Hinterkopf, dass deine Zugangsdaten auf einem externen Server gespeichert werden und dies trotz bester Absichten ein Sicherheitsrisiko sein kann!',
     title: 'Info über Push',

lib/view/pages/share_intent/share_chat_picker.dart

@@ -0,0 +1,281 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:nextcloud/nextcloud.dart';
+import 'package:persistent_bottom_nav_bar_v2/persistent_bottom_nav_bar_v2.dart';
+
+import '../../../api/errors/error_mapper.dart';
+import '../../../api/marianumcloud/talk/room/get_room_response.dart';
+import '../../../api/marianumcloud/talk/send_message/send_message.dart';
+import '../../../api/marianumcloud/talk/send_message/send_message_params.dart';
+import '../../../api/marianumcloud/talk/share_files_to_chat.dart';
+import '../../../api/marianumcloud/webdav/webdav_api.dart';
+import '../../../routing/app_routes.dart';
+import '../../../share_intent/pending_share.dart';
+import '../../../share_intent/remote_file_ref.dart';
+import '../../../share_intent/share_intent_listener.dart';
+import '../../../state/app/infrastructure/loadable_state/view/loadable_state_consumer.dart';
+import '../../../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
+import '../../../state/app/modules/chat_list/bloc/chat_list_state.dart';
+import '../../../state/app/modules/settings/bloc/settings_cubit.dart';
+import '../../../widget/info_dialog.dart';
+import '../../../widget/placeholder_view.dart';
+import '../files/files_upload_dialog.dart';
+import '../talk/search_chat.dart';
+import '../talk/widgets/chat_tile.dart';
+
+typedef _ChatPickedCallback =
+    Future<void> Function(BuildContext context, GetRoomResponseObject room);
+
+class ShareChatPicker extends StatelessWidget {
+  final _ChatPickedCallback _onPicked;
+
+  const ShareChatPicker._({required _ChatPickedCallback onPicked})
+    : _onPicked = onPicked;
+
+  /// External share-intent flow: uploads local files into the Talk share
+  /// folder, then shares them in the chosen chat. Falls back to a draft-only
+  /// flow when the pending share contains no files.
+  factory ShareChatPicker.forExternalShare({required PendingShare share}) =>
+      ShareChatPicker._(
+        onPicked: (ctx, room) => _externalShareFlow(ctx, room, share),
+      );
+
+  /// In-app share flow: links an already-uploaded server file into the chosen
+  /// chat via FileSharingApi (no upload needed).
+  factory ShareChatPicker.forInternalShare({required RemoteFileRef file}) =>
+      ShareChatPicker._(
+        onPicked: (ctx, room) => _internalShareFlow(ctx, room, file),
+      );
+
+  /// Forward an existing Talk message (text and/or already-uploaded file
+  /// attachment) into another chat. The attachment is re-shared via the same
+  /// FileSharingApi path used for [forInternalShare]; plain text is posted
+  /// with [SendMessage].
+  factory ShareChatPicker.forMessageForward({
+    String? text,
+    RemoteFileRef? file,
+  }) {
+    assert(
+      text != null || file != null,
+      'forMessageForward requires either text or file',
+    );
+    return ShareChatPicker._(
+      onPicked: (ctx, room) => _forwardMessageFlow(ctx, room, text, file),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final talkSettings = context.watch<SettingsCubit>().val().talkSettings;
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Talk-Chat auswählen'),
+        actions: [
+          Builder(
+            builder: (ctx) => IconButton(
+              icon: const Icon(Icons.search),
+              onPressed: () {
+                final rooms = ctx.read<ChatListBloc>().state.data?.rooms;
+                if (rooms == null) return;
+                showSearch(
+                  context: ctx,
+                  delegate: SearchChat(
+                    rooms.data.where((r) => r.readOnly == 0).toList(),
+                    onTapOverride: (room) {
+                      Navigator.of(ctx).pop();
+                      _onPicked(ctx, room);
+                    },
+                  ),
+                );
+              },
+            ),
+          ),
+        ],
+      ),
+      body: LoadableStateConsumer<ChatListBloc, ChatListState>(
+        child: (state, _) {
+          final rooms = state.rooms;
+          if (rooms == null) return const SizedBox.shrink();
+          final sorted = rooms
+              .sortBy(
+                lastActivity: true,
+                favoritesToTop: talkSettings.sortFavoritesToTop,
+                unreadToTop: talkSettings.sortUnreadToTop,
+              )
+              // Hide chats the user can't write to (announcement channels,
+              // archived rooms, …) — uploading there would only fail at the
+              // share-API call with 403.
+              .where((r) => r.readOnly == 0)
+              .toList();
+          if (sorted.isEmpty) {
+            return const PlaceholderView(
+              icon: Icons.chat_bubble_outline,
+              text: 'Keine schreibbaren Chats verfügbar',
+            );
+          }
+          return ListView.builder(
+            padding: EdgeInsets.zero,
+            itemCount: sorted.length,
+            itemBuilder: (context, i) => ChatTile(
+              data: sorted[i],
+              disableContextActions: true,
+              onTapOverride: (room) => _onPicked(context, room),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}
+
+Future<void> _externalShareFlow(
+  BuildContext context,
+  GetRoomResponseObject room,
+  PendingShare share,
+) async {
+  if (share.hasFiles) {
+    try {
+      final webdav = await WebdavApi.webdav;
+      await webdav.mkcol(PathUri.parse('/$talkShareFolder'));
+    } catch (_) {
+      // mkcol throws when the folder already exists; ignore.
+    }
+    if (!context.mounted) return;
+    await pushScreen(
+      context,
+      withNavBar: false,
+      screen: FilesUploadDialog(
+        filePaths: share.filePaths,
+        remotePath: talkShareFolder,
+        uniqueNames: true,
+        onUploadFinished: (uploaded) =>
+            _afterExternalFilesUploaded(context, room, uploaded, share),
+      ),
+    );
+    return;
+  }
+  if (share.hasText) {
+    _setExternalDraftAndOpenChat(context, room, share);
+  }
+}
+
+Future<void> _afterExternalFilesUploaded(
+  BuildContext context,
+  GetRoomResponseObject room,
+  List<String> uploadedRemotePaths,
+  PendingShare share,
+) async {
+  unawaited(_showBlockingSpinner(context));
+  try {
+    await shareFilesToChat(
+      token: room.token,
+      remoteFilePaths: uploadedRemotePaths,
+    );
+  } catch (e) {
+    if (context.mounted) Navigator.of(context).pop();
+    if (context.mounted) {
+      InfoDialog.show(
+        context,
+        errorToUserMessage(e),
+        title: 'Fehler',
+        copyable: true,
+      );
+    }
+    return;
+  }
+  if (!context.mounted) return;
+  _setExternalDraftAndOpenChat(context, room, share);
+}
+
+void _setExternalDraftAndOpenChat(
+  BuildContext context,
+  GetRoomResponseObject room,
+  PendingShare share,
+) {
+  if (share.hasText) {
+    final settings = context.read<SettingsCubit>();
+    settings.val(write: true).talkSettings.drafts[room.token] = share.text!;
+  }
+  ShareIntentListener.instance.clear();
+  _finishWithChat(context, room);
+}
+
+/// Closes any picker/spinner pages stacked on top of the current tab and
+/// jumps to the chosen chat. Shared by external + internal share flows.
+void _finishWithChat(BuildContext context, GetRoomResponseObject room) {
+  Navigator.of(context).popUntil((route) => route.isFirst);
+  AppRoutes.openChatByToken(context, room.token);
+}
+
+Future<void> _internalShareFlow(
+  BuildContext context,
+  GetRoomResponseObject room,
+  RemoteFileRef file,
+) async {
+  unawaited(_showBlockingSpinner(context));
+  try {
+    await shareFilesToChat(
+      token: room.token,
+      remoteFilePaths: [file.path],
+    );
+  } catch (e) {
+    if (context.mounted) Navigator.of(context).pop();
+    if (context.mounted) {
+      InfoDialog.show(
+        context,
+        errorToUserMessage(e),
+        title: 'Fehler',
+        copyable: true,
+      );
+    }
+    return;
+  }
+  if (!context.mounted) return;
+  _finishWithChat(context, room);
+}
+
+Future<void> _forwardMessageFlow(
+  BuildContext context,
+  GetRoomResponseObject room,
+  String? text,
+  RemoteFileRef? file,
+) async {
+  unawaited(_showBlockingSpinner(context));
+  try {
+    if (file != null) {
+      await shareFilesToChat(
+        token: room.token,
+        remoteFilePaths: [file.path],
+      );
+    }
+    if (text != null && text.isNotEmpty) {
+      await SendMessage(room.token, SendMessageParams(text)).run();
+    }
+  } catch (e) {
+    if (context.mounted) Navigator.of(context).pop();
+    if (context.mounted) {
+      InfoDialog.show(
+        context,
+        errorToUserMessage(e),
+        title: 'Fehler',
+        copyable: true,
+      );
+    }
+    return;
+  }
+  if (!context.mounted) return;
+  _finishWithChat(context, room);
+}
+
+/// Modal progress overlay shown during share-API roundtrips. The dialog is
+/// popped together with the picker by the subsequent popUntil(isFirst).
+Future<void> _showBlockingSpinner(BuildContext context) => showDialog<void>(
+  context: context,
+  barrierDismissible: false,
+  builder: (_) => const PopScope(
+    canPop: false,
+    child: Center(child: CircularProgressIndicator()),
+  ),
+);

lib/view/pages/share_intent/share_folder_picker.dart

@@ -0,0 +1,256 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:persistent_bottom_nav_bar_v2/persistent_bottom_nav_bar_v2.dart';
+
+import '../../../api/errors/error_mapper.dart';
+import '../../../routing/app_routes.dart';
+import '../../../share_intent/internal_share_actions.dart';
+import '../../../share_intent/pending_share.dart';
+import '../../../share_intent/remote_file_ref.dart';
+import '../../../share_intent/share_intent_listener.dart';
+import '../../../state/app/infrastructure/loadable_state/loadable_state.dart';
+import '../../../state/app/infrastructure/loadable_state/view/loadable_state_consumer.dart';
+import '../../../state/app/infrastructure/utility_widgets/bloc_module.dart';
+import '../../../state/app/modules/files/bloc/files_bloc.dart';
+import '../../../state/app/modules/files/bloc/files_state.dart';
+import '../../../state/app/modules/settings/bloc/settings_cubit.dart';
+import '../../../widget/info_dialog.dart';
+import '../../../widget/placeholder_view.dart';
+import '../files/data/sort_options.dart';
+import '../files/files_upload_dialog.dart';
+import '../files/widgets/add_file_menu.dart';
+import '../files/widgets/files_sort_actions.dart';
+
+typedef _FolderConfirmedCallback =
+    Future<void> Function(BuildContext context, List<String> targetPath);
+
+class ShareFolderPicker extends StatelessWidget {
+  final String _fabLabel;
+  final _FolderConfirmedCallback _onConfirm;
+
+  const ShareFolderPicker._({
+    required String fabLabel,
+    required _FolderConfirmedCallback onConfirm,
+  }) : _fabLabel = fabLabel,
+       _onConfirm = onConfirm;
+
+  /// External share-intent flow: upload local files into the chosen folder.
+  factory ShareFolderPicker.forExternalShare({required PendingShare share}) =>
+      ShareFolderPicker._(
+        fabLabel: 'Hier hochladen',
+        onConfirm: (ctx, target) => _externalUploadFlow(ctx, target, share),
+      );
+
+  /// In-app save flow: server-to-server WebDAV-copy of an existing file into
+  /// the chosen folder.
+  factory ShareFolderPicker.forInternalSave({required RemoteFileRef file}) =>
+      ShareFolderPicker._(
+        fabLabel: 'Hierhin kopieren',
+        onConfirm: (ctx, target) => _internalCopyFlow(ctx, target, file),
+      );
+
+  @override
+  Widget build(BuildContext context) =>
+      BlocModule<FilesBloc, LoadableState<FilesState>>(
+        create: (_) => FilesBloc(),
+        child: (context, _, _) =>
+            _ShareFolderPickerView(fabLabel: _fabLabel, onConfirm: _onConfirm),
+      );
+}
+
+class _ShareFolderPickerView extends StatefulWidget {
+  final String fabLabel;
+  final _FolderConfirmedCallback onConfirm;
+  const _ShareFolderPickerView({
+    required this.fabLabel,
+    required this.onConfirm,
+  });
+
+  @override
+  State<_ShareFolderPickerView> createState() => _ShareFolderPickerViewState();
+}
+
+class _ShareFolderPickerViewState extends State<_ShareFolderPickerView> {
+  late final SettingsCubit _settings;
+  late SortOption _currentSort;
+  late bool _ascending;
+
+  @override
+  void initState() {
+    super.initState();
+    _settings = context.read<SettingsCubit>();
+    _currentSort = _settings.val().fileSettings.sortBy;
+    _ascending = _settings.val().fileSettings.ascending;
+  }
+
+  void _enter(FilesBloc bloc, List<String> currentPath, String folderName) {
+    bloc.setPath([...currentPath, folderName]);
+  }
+
+  void _goUp(FilesBloc bloc, List<String> currentPath) {
+    if (currentPath.isEmpty) return;
+    bloc.setPath(currentPath.sublist(0, currentPath.length - 1));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final bloc = context.read<FilesBloc>();
+    return BlocBuilder<FilesBloc, LoadableState<FilesState>>(
+      buildWhen: (a, b) => a.data?.currentPath != b.data?.currentPath,
+      builder: (_, outerState) {
+        final currentPath = outerState.data?.currentPath ?? const [];
+        return PopScope(
+          // Back navigates one level up while inside a sub-folder; only the
+          // root level actually closes the picker. Matches the standard
+          // files-app pattern and keeps the AppBar back-arrow consistent
+          // with the chat picker.
+          canPop: currentPath.isEmpty,
+          onPopInvokedWithResult: (didPop, _) {
+            if (didPop) return;
+            if (currentPath.isNotEmpty) _goUp(bloc, currentPath);
+          },
+          child: _buildScaffold(context, bloc, currentPath),
+        );
+      },
+    );
+  }
+
+  Widget _buildScaffold(
+    BuildContext context,
+    FilesBloc bloc,
+    List<String> currentPath,
+  ) => Scaffold(
+    appBar: AppBar(
+      title: Text(
+        currentPath.isEmpty ? 'Ordner wählen' : '/${currentPath.join('/')}',
+        overflow: TextOverflow.ellipsis,
+      ),
+      actions: [
+        IconButton(
+          icon: const Icon(Icons.create_new_folder_outlined),
+          tooltip: 'Ordner erstellen',
+          onPressed: () => showCreateFolderDialog(context, bloc),
+        ),
+        FilesSortActions(
+          currentSort: _currentSort,
+          ascending: _ascending,
+          onDirectionChanged: (e) {
+            setState(() {
+              _ascending = e;
+              _settings.val(write: true).fileSettings.ascending = e;
+            });
+          },
+          onSortChanged: (e) {
+            setState(() {
+              _currentSort = e;
+              _settings.val(write: true).fileSettings.sortBy = e;
+            });
+          },
+        ),
+      ],
+    ),
+    floatingActionButton: FloatingActionButton.extended(
+      heroTag: 'shareUploadHere',
+      onPressed: () => widget.onConfirm(context, currentPath),
+      icon: const Icon(Icons.upload),
+      label: Text(widget.fabLabel),
+    ),
+    body: LoadableStateConsumer<FilesBloc, FilesState>(
+      isReady: (state) => state.listing != null,
+      child: (state, _) {
+        final listing = state.listing!;
+        final entries = listing.sortBy(
+          sortOption: _currentSort,
+          foldersToTop: _settings.val().fileSettings.sortFoldersToTop,
+          reversed: _ascending,
+        );
+
+        if (entries.isEmpty) {
+          return PlaceholderView(
+            icon: Icons.folder_off_rounded,
+            text: state.currentPath.isEmpty
+                ? 'Leer. Du kannst hier direkt hochladen.'
+                : 'Ordner ist leer. Du kannst hier hochladen.',
+          );
+        }
+
+        return ListView.builder(
+          padding: EdgeInsets.zero,
+          itemCount: entries.length,
+          itemBuilder: (context, i) {
+            final entry = entries[i];
+            if (entry.isDirectory) {
+              return ListTile(
+                leading: const Icon(Icons.folder_outlined),
+                title: Text(entry.name),
+                trailing: const Icon(Icons.chevron_right),
+                onTap: () => _enter(bloc, state.currentPath, entry.name),
+              );
+            }
+            return ListTile(
+              enabled: false,
+              leading: const Icon(Icons.description_outlined),
+              title: Text(entry.name),
+            );
+          },
+        );
+      },
+    ),
+  );
+}
+
+Future<void> _externalUploadFlow(
+  BuildContext context,
+  List<String> targetPath,
+  PendingShare share,
+) async {
+  await pushScreen(
+    context,
+    withNavBar: false,
+    screen: FilesUploadDialog(
+      filePaths: share.filePaths,
+      remotePath: targetPath.join('/'),
+      onUploadFinished: (_) => _afterExternalUploaded(context, targetPath),
+    ),
+  );
+}
+
+void _afterExternalUploaded(BuildContext context, List<String> targetPath) {
+  ShareIntentListener.instance.clear();
+  if (!context.mounted) return;
+  _finishWithFolder(context, targetPath);
+}
+
+/// Closes any picker pages stacked on top of the current tab and jumps to
+/// the chosen folder. Shared by external upload + internal copy flows.
+void _finishWithFolder(BuildContext context, List<String> targetPath) {
+  Navigator.of(context).popUntil((route) => route.isFirst);
+  AppRoutes.openFolder(context, targetPath);
+}
+
+Future<void> _internalCopyFlow(
+  BuildContext context,
+  List<String> targetPath,
+  RemoteFileRef file,
+) async {
+  final bool ok;
+  try {
+    ok = await copyRemoteFileTo(
+      context: context,
+      source: file,
+      targetFolderPath: targetPath.join('/'),
+    );
+  } catch (e) {
+    if (context.mounted) {
+      InfoDialog.show(
+        context,
+        errorToUserMessage(e),
+        title: 'Kopieren fehlgeschlagen',
+        copyable: true,
+      );
+    }
+    return;
+  }
+  if (!ok || !context.mounted) return;
+  _finishWithFolder(context, targetPath);
+}

lib/view/pages/share_intent/share_target_page.dart

@@ -0,0 +1,210 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+
+import '../../../routing/app_routes.dart';
+import '../../../share_intent/pending_share.dart';
+import '../../../share_intent/share_intent_listener.dart';
+
+class ShareTargetPage extends StatelessWidget {
+  final PendingShare share;
+
+  const ShareTargetPage({super.key, required this.share});
+
+  static const _imageExtensions = {
+    '.jpg',
+    '.jpeg',
+    '.png',
+    '.gif',
+    '.webp',
+    '.heic',
+    '.heif',
+    '.bmp',
+  };
+
+  bool _isImagePath(String path) {
+    final lower = path.toLowerCase();
+    return _imageExtensions.any(lower.endsWith);
+  }
+
+  String _appBarTitle() {
+    if (share.hasFiles && share.hasText) return 'Inhalte teilen';
+    if (share.hasFiles) {
+      return share.filePaths.length == 1
+          ? '1 Datei teilen'
+          : '${share.filePaths.length} Dateien teilen';
+    }
+    return 'Inhalt teilen';
+  }
+
+  @override
+  Widget build(BuildContext context) => PopScope(
+    onPopInvokedWithResult: (didPop, _) {
+      if (didPop) ShareIntentListener.instance.clear();
+    },
+    child: Scaffold(
+      appBar: AppBar(title: Text(_appBarTitle())),
+      body: Column(
+        children: [
+          Expanded(
+            child: SingleChildScrollView(
+              padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+                  if (share.hasFiles) _buildFilePreview(context),
+                  if (share.hasFiles && share.hasText)
+                    const SizedBox(height: 12),
+                  if (share.hasText) _buildTextPreview(context),
+                ],
+              ),
+            ),
+          ),
+          const Divider(height: 1),
+          SafeArea(
+            top: false,
+            child: Padding(
+              padding: const EdgeInsets.only(top: 12, bottom: 8),
+              child: Column(
+                children: [
+                  Padding(
+                    padding: const EdgeInsets.fromLTRB(16, 4, 16, 12),
+                    child: Column(
+                      children: [
+                        Icon(
+                          Icons.ios_share,
+                          size: 44,
+                          color: Theme.of(context).colorScheme.primary,
+                        ),
+                        const SizedBox(height: 8),
+                        Text(
+                          'Wo möchtest du teilen?',
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.titleLarge
+                              ?.copyWith(fontWeight: FontWeight.w600),
+                        ),
+                      ],
+                    ),
+                  ),
+                  ListTile(
+                    leading: const Icon(Icons.chat_bubble_outline),
+                    title: const Text('An Talk-Chat senden'),
+                    subtitle: const Text(
+                      'Datei oder Text in einem Talk-Chat teilen',
+                    ),
+                    trailing: const Icon(Icons.chevron_right),
+                    onTap: () =>
+                        AppRoutes.openShareChatPicker(context, share),
+                  ),
+                  ListTile(
+                    enabled: share.hasFiles,
+                    leading: const Icon(Icons.cloud_outlined),
+                    title: const Text('In Cloud speichern'),
+                    subtitle: Text(
+                      share.hasFiles
+                          ? 'In einen Cloud-Ordner hochladen'
+                          : 'Nur für Dateien verfügbar',
+                    ),
+                    trailing: const Icon(Icons.chevron_right),
+                    onTap: share.hasFiles
+                        ? () => AppRoutes.openShareFolderPicker(context, share)
+                        : null,
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    ),
+  );
+
+  Widget _buildFilePreview(BuildContext context) {
+    if (share.filePaths.length == 1) {
+      final path = share.filePaths.first;
+      final name = path.split(Platform.pathSeparator).last;
+      return ConstrainedBox(
+        constraints: const BoxConstraints(maxHeight: 320),
+        child: Container(
+          decoration: BoxDecoration(
+            color: Theme.of(context).colorScheme.surfaceContainer,
+            borderRadius: BorderRadius.circular(12),
+          ),
+          clipBehavior: Clip.antiAlias,
+          child: _isImagePath(path)
+              ? Image.file(
+                  File(path),
+                  fit: BoxFit.contain,
+                  // Decode at most ~1080px so 50-MP gallery photos don't
+                  // balloon the decode buffer just to render at <320px high.
+                  cacheWidth: 1080,
+                  errorBuilder: (_, _, _) => _fileFallbackLarge(name),
+                )
+              : _fileFallbackLarge(name),
+        ),
+      );
+    }
+    return GridView.builder(
+      shrinkWrap: true,
+      physics: const NeverScrollableScrollPhysics(),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 2,
+        crossAxisSpacing: 10,
+        mainAxisSpacing: 10,
+      ),
+      itemCount: share.filePaths.length,
+      itemBuilder: (context, i) {
+        final path = share.filePaths[i];
+        final name = path.split(Platform.pathSeparator).last;
+        return Container(
+          decoration: BoxDecoration(
+            color: Theme.of(context).colorScheme.surfaceContainer,
+            borderRadius: BorderRadius.circular(12),
+          ),
+          clipBehavior: Clip.antiAlias,
+          child: _isImagePath(path)
+              ? Image.file(
+                  File(path),
+                  fit: BoxFit.cover,
+                  // Grid tiles are ~half-screen wide; 480px decode is
+                  // sharp on 3x displays without blowing up memory when
+                  // many files are shared at once.
+                  cacheWidth: 480,
+                  errorBuilder: (_, _, _) => _fileFallbackLarge(name),
+                )
+              : _fileFallbackLarge(name),
+        );
+      },
+    );
+  }
+
+  Widget _buildTextPreview(BuildContext context) => Card(
+    margin: EdgeInsets.zero,
+    child: Padding(
+      padding: const EdgeInsets.all(12),
+      child: Text(
+        share.text!,
+        maxLines: 6,
+        overflow: TextOverflow.ellipsis,
+      ),
+    ),
+  );
+
+  Widget _fileFallbackLarge(String name) => Padding(
+    padding: const EdgeInsets.all(16),
+    child: Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        const Icon(Icons.insert_drive_file_outlined, size: 64),
+        const SizedBox(height: 8),
+        Text(
+          name,
+          maxLines: 3,
+          overflow: TextOverflow.ellipsis,
+          textAlign: TextAlign.center,
+          style: const TextStyle(fontSize: 12),
+        ),
+      ],
+    ),
+  );
+}