added ios privacy manifests, fixed permission texts and updated the xcode project

Privacy manifests for the app, widget and share extension declare the
App Group UserDefaults access (CA92.1, 1C8F.1) required for App Store
submission. Photo library and camera usage texts corrected. Project
format and SwiftPM pins (Firebase 12.19) as updated by Xcode 27 / Flutter
3.47.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

ios/Runner.xcodeproj/project.pbxproj

@@ -3,11 +3,12 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 54;
+	objectVersion = 70;
 	objects = {
 
 /* Begin PBXBuildFile section */
 		034BD2FF7A860C6DC2FED514 /* Pods_Share_Extension.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4F2428AC5384E0EF8DAB462A /* Pods_Share_Extension.framework */; };
+		0B36AA42294848D99E4E0742 /* PrivacyInfo.xcprivacy in Resources */ = {isa = PBXBuildFile; fileRef = AFE007D963441C0650CD3ED9 /* PrivacyInfo.xcprivacy */; };
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
 		3321F80F2FB1C00C0011C712 /* Share Extension.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = 3321F8052FB1C00C0011C712 /* Share Extension.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
 		33FDB0982EE9ABDC000B2391 /* GoogleService-Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = 33FDB0972EE9ABDC000B2391 /* GoogleService-Info.plist */; };
@@ -77,19 +78,19 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
-		12B96C78930441C73F123636 /* Info.plist */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.xml; name = Info.plist; path = Info.plist; sourceTree = "<group>"; };
+		12B96C78930441C73F123636 /* Info.plist */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
 		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
 		17E2EE012C4361AC05DCA4C9 /* NotificationServiceExtension-Release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "NotificationServiceExtension-Release.xcconfig"; path = "Flutter/NotificationServiceExtension-Release.xcconfig"; sourceTree = "<group>"; };
-		2960F029246C39E2A03F6D87 /* NotificationService.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; name = NotificationService.swift; path = NotificationService.swift; sourceTree = "<group>"; };
+		2960F029246C39E2A03F6D87 /* NotificationService.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = NotificationService.swift; sourceTree = "<group>"; };
 		3321F8052FB1C00C0011C712 /* Share Extension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = "Share Extension.appex"; sourceTree = BUILT_PRODUCTS_DIR; };
 		33FDB0972EE9ABDC000B2391 /* GoogleService-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = "GoogleService-Info.plist"; sourceTree = "<group>"; };
 		36C6C71327C68B43F522F5B2 /* NotificationServiceExtension-Debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "NotificationServiceExtension-Debug.xcconfig"; path = "Flutter/NotificationServiceExtension-Debug.xcconfig"; sourceTree = "<group>"; };
 		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
 		4509EC31CB08BA9BF367AF6C /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
 		4F2428AC5384E0EF8DAB462A /* Pods_Share_Extension.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Share_Extension.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-		509DCCD474353408FE5806C5 /* PEM.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; name = PEM.swift; path = PEM.swift; sourceTree = "<group>"; };
-		5C2F4C79DD573778092882AB /* NotificationServiceExtension.entitlements */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.entitlements; name = NotificationServiceExtension.entitlements; path = NotificationServiceExtension.entitlements; sourceTree = "<group>"; };
+		509DCCD474353408FE5806C5 /* PEM.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = PEM.swift; sourceTree = "<group>"; };
+		5C2F4C79DD573778092882AB /* NotificationServiceExtension.entitlements */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.entitlements; path = NotificationServiceExtension.entitlements; sourceTree = "<group>"; };
 		60E1803A3FB28FCC6F435E99 /* Pods-Share Extension.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Share Extension.release.xcconfig"; path = "Target Support Files/Pods-Share Extension/Pods-Share Extension.release.xcconfig"; sourceTree = "<group>"; };
 		64801C012A9112D500E8B558 /* Runner.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Runner.entitlements; sourceTree = "<group>"; };
 		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
@@ -107,6 +108,7 @@
 		AA0101020000000011111111 /* TimetableWidgetExtension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = TimetableWidgetExtension.appex; sourceTree = BUILT_PRODUCTS_DIR; };
 		AA0102020000000022222222 /* SceneDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SceneDelegate.swift; sourceTree = "<group>"; };
 		AA6B03D1433E7395021F7730 /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
+		AFE007D963441C0650CD3ED9 /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; includeInIndex = 1; path = PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
 		BB0001010000000011111111 /* ShareExtension-Debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = "ShareExtension-Debug.xcconfig"; path = "Flutter/ShareExtension-Debug.xcconfig"; sourceTree = "<group>"; };
 		BB0001020000000011111111 /* ShareExtension-Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = "ShareExtension-Release.xcconfig"; path = "Flutter/ShareExtension-Release.xcconfig"; sourceTree = "<group>"; };
 		BB0001030000000011111111 /* ShareExtension-Profile.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = "ShareExtension-Profile.xcconfig"; path = "Flutter/ShareExtension-Profile.xcconfig"; sourceTree = "<group>"; };
@@ -222,7 +224,6 @@
 				12B96C78930441C73F123636 /* Info.plist */,
 				5C2F4C79DD573778092882AB /* NotificationServiceExtension.entitlements */,
 			);
-			name = NotificationServiceExtension;
 			path = NotificationServiceExtension;
 			sourceTree = SOURCE_ROOT;
 		};
@@ -304,6 +305,7 @@
 				74858FAE1ED2DC5600515810 /* AppDelegate.swift */,
 				AA0102020000000022222222 /* SceneDelegate.swift */,
 				74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */,
+				AFE007D963441C0650CD3ED9 /* PrivacyInfo.xcprivacy */,
 			);
 			path = Runner;
 			sourceTree = "<group>";
@@ -469,6 +471,7 @@
 				33FDB0982EE9ABDC000B2391 /* GoogleService-Info.plist in Resources */,
 				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
 				97C146FC1CF9000F007C117D /* Main.storyboard in Resources */,
+				0B36AA42294848D99E4E0742 /* PrivacyInfo.xcprivacy in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -50,8 +50,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/firebase/firebase-ios-sdk",
       "state" : {
-        "revision" : "42e81d245e30e49ea6a5830cf2842d44a1591270",
-        "version" : "12.15.0"
+        "revision" : "27eaab3918e0bf78711cf1abf240577176326432",
+        "version" : "12.19.0"
       }
     },
     {
@@ -59,8 +59,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/googleads/google-ads-on-device-conversion-ios-sdk",
       "state" : {
-        "revision" : "dc39082d8881109d35b94b1c122164c0e8d08a55",
-        "version" : "3.6.1"
+        "revision" : "0208e2681ec81f8a9c81084696f60fcce26cb7ee",
+        "version" : "3.7.0"
       }
     },
     {
@@ -68,8 +68,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/google/GoogleAppMeasurement.git",
       "state" : {
-        "revision" : "144855f40d8668927f256a3045f7fdc4c3f4338b",
-        "version" : "12.15.0"
+        "revision" : "b8455dd2ff55cc269fda7a4f9eac6c1e3588c53f",
+        "version" : "12.19.2"
       }
     },
     {
@@ -86,8 +86,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/google/GoogleUtilities.git",
       "state" : {
-        "revision" : "9f183ae842be978784f2963a343682e0c46d8fb3",
-        "version" : "8.1.2"
+        "revision" : "92c8f6dc3ac375d6febdfcb3db68bc3d10633db3",
+        "version" : "8.1.3"
       }
     },
     {

ios/Runner/Info.plist

@@ -42,9 +42,9 @@
 		<key>LSRequiresIPhoneOS</key>
 		<true/>
 		<key>NSCameraUsageDescription</key>
-		<string>Um Fotos direkt aus der App aufnehmen und teilen zu können wird Zugriff auf die Kamera benötigt.</string>
+		<string>Um Fotos direkt aus der App aufnehmen und teilen zu können, wird Zugriff auf die Kamera benötigt.</string>
 		<key>NSPhotoLibraryUsageDescription</key>
-		<string>Um Medien mit anderen zu teilen wird Zugriff zu deine Dateien benötigt.</string>
+		<string>Um Fotos und Videos mit anderen zu teilen, wird Zugriff auf deine Mediathek benötigt.</string>
 		<key>UIApplicationSceneManifest</key>
 		<dict>
 			<key>UIApplicationSupportsMultipleScenes</key>

ios/Runner/PrivacyInfo.xcprivacy

@@ -0,0 +1,24 @@
+<?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>NSPrivacyTracking</key>
+	<false/>
+	<key>NSPrivacyTrackingDomains</key>
+	<array/>
+	<key>NSPrivacyCollectedDataTypes</key>
+	<array/>
+	<key>NSPrivacyAccessedAPITypes</key>
+	<array>
+		<dict>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryUserDefaults</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>CA92.1</string>
+				<string>1C8F.1</string>
+			</array>
+		</dict>
+	</array>
+</dict>
+</plist>

ios/Share Extension/PrivacyInfo.xcprivacy

@@ -0,0 +1,24 @@
+<?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>NSPrivacyTracking</key>
+	<false/>
+	<key>NSPrivacyTrackingDomains</key>
+	<array/>
+	<key>NSPrivacyCollectedDataTypes</key>
+	<array/>
+	<key>NSPrivacyAccessedAPITypes</key>
+	<array>
+		<dict>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryUserDefaults</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>CA92.1</string>
+				<string>1C8F.1</string>
+			</array>
+		</dict>
+	</array>
+</dict>
+</plist>

ios/TimetableWidgetExtension/PrivacyInfo.xcprivacy

@@ -0,0 +1,24 @@
+<?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>NSPrivacyTracking</key>
+	<false/>
+	<key>NSPrivacyTrackingDomains</key>
+	<array/>
+	<key>NSPrivacyCollectedDataTypes</key>
+	<array/>
+	<key>NSPrivacyAccessedAPITypes</key>
+	<array>
+		<dict>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryUserDefaults</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>CA92.1</string>
+				<string>1C8F.1</string>
+			</array>
+		</dict>
+	</array>
+</dict>
+</plist>

ios/TimetableWidgetExtension/TimetableDayView.swift

@@ -147,7 +147,8 @@ struct PeriodRuler: View {
                 .font(.system(size: timeFont))
                 .foregroundStyle(palette.textSecondary)
                 .lineLimit(1)
-                .padding(.vertical, 2)
+                .minimumScaleFactor(0.8)
+                .padding(.vertical, 1)
             }
         }
         .frame(width: RULER_WIDTH, height: height)
@@ -304,6 +305,8 @@ private struct LessonTile: View {
     let metrics: TileMetrics
     let layout: TileTextLayout
 
+    @Environment(\.widgetRenderingMode) private var renderingMode
+
     private static let cancelledRed =
         Color(red: 244 / 255, green: 67 / 255, blue: 54 / 255).opacity(200 / 255)
 
@@ -326,7 +329,7 @@ private struct LessonTile: View {
         .padding(.vertical, TILE_PADDING_V)
         .frame(maxWidth: .infinity, alignment: .topLeading)
         .frame(height: height, alignment: .topLeading)
-        .background(lesson.tileColor)
+        .background { tileBackground(shape) }
         .clipShape(shape)
         .overlay(alignment: .bottomTrailing) {
             if let count = lesson.siblingCount, count > 0 {
@@ -357,6 +360,22 @@ private struct LessonTile: View {
         .padding(.horizontal, TILE_MARGIN_H)
     }
 
+    /// Tinted / clear home screens flatten an opaque colour block into a
+    /// solid slab the white text disappears on; a translucent fill with an
+    /// outline keeps tile and text apart in every rendering mode.
+    @ViewBuilder
+    private func tileBackground(_ shape: RoundedRectangle) -> some View {
+        if renderingMode == .fullColor {
+            lesson.tileColor
+        } else {
+            ZStack {
+                shape.fill(Color.white.opacity(0.18))
+                shape.strokeBorder(Color.white.opacity(0.55), lineWidth: 1)
+            }
+            .widgetAccentable()
+        }
+    }
+
     private var titleRow: some View {
         HStack(alignment: .center, spacing: 3) {
             Text(layout.title)

ios/TimetableWidgetExtension/TimetableLayout.swift

@@ -47,7 +47,10 @@ let TITLE_WRAP_BELOW_FONT: CGFloat = 8
 let BADGE_WIDTH: CGFloat = 16
 let BADGE_HEIGHT: CGFloat = 11
 
-let RULER_TIMES_MIN_CELL: CGFloat = 30
+/// Lower than Android's 30dp: a .systemLarge widget only gets ~27pt per
+/// period, so iOS packs the ruler cell tighter (see PeriodRuler.cell)
+/// instead of dropping the times.
+let RULER_TIMES_MIN_CELL: CGFloat = 24
 let BREAK_ICON_MIN_HEIGHT: CGFloat = 12
 
 /// Space the holiday column keeps free above and below the rotated name for

ios/TimetableWidgetExtension/TimetableWeekView.swift

@@ -4,6 +4,7 @@ import WidgetKit
 struct TimetableWeekView: View {
     let entry: TimetableEntry
     @Environment(\.widgetPalette) private var palette
+    @Environment(\.widgetRenderingMode) private var renderingMode
 
     var body: some View {
         ZStack {
@@ -115,13 +116,23 @@ struct TimetableWeekView: View {
                 .lineLimit(1)
             Text("\(Calendar.current.component(.day, from: day))")
                 .font(.system(size: 11, weight: isToday ? .bold : .regular))
-                .foregroundStyle(isToday ? palette.onAccent : palette.textPrimary)
+                .foregroundStyle(isToday ? todayNumberColor : palette.textPrimary)
                 .lineLimit(1)
                 .frame(width: 18, height: 18)
-                .background(Circle().fill(isToday ? palette.accent : Color.clear))
+                .background(Circle().fill(isToday ? todayCircleColor : Color.clear))
         }
     }
 
+    // An opaque accent circle flattens to the same shade as its number on
+    // tinted / clear home screens; keep the circle translucent there.
+    private var todayCircleColor: Color {
+        renderingMode == .fullColor ? palette.accent : Color.white.opacity(0.3)
+    }
+
+    private var todayNumberColor: Color {
+        renderingMode == .fullColor ? palette.onAccent : palette.textPrimary
+    }
+
     private func placeholder(_ message: String) -> some View {
         VStack(spacing: 4) {
             Text("Marianum Stundenplan")

ios/TimetableWidgetExtension/TimetableWidgetExtension.swift

@@ -201,12 +201,15 @@ private struct WidgetSurface<Content: View>: View {
     let entry: TimetableEntry
     @ViewBuilder let content: () -> Content
     @Environment(\.colorScheme) private var colorScheme
+    @Environment(\.widgetRenderingMode) private var renderingMode
 
     var body: some View {
-        let palette = WidgetPalette.resolve(
-            themeMode: entry.themeMode,
-            colorScheme: colorScheme
-        )
+        // Tinted / clear home screens map every colour to its luminance, so
+        // the light palette's near-black text would vanish — use the dark
+        // palette's light text there regardless of the theme setting.
+        let palette = renderingMode == .fullColor
+            ? WidgetPalette.resolve(themeMode: entry.themeMode, colorScheme: colorScheme)
+            : .dark
         return AnyView(
             background(content: content(), palette: palette)
                 .environment(\.widgetPalette, palette)

lib/view/pages/timetable/widgets/calendar/day_header.dart

@@ -13,17 +13,19 @@ class _DayHeaderStrip extends StatelessWidget {
   });
 
   @override
-  Widget build(BuildContext context) => Row(
-    children: [
-      SizedBox(width: rulerWidth),
-      for (var d = 0; d < 5; d++)
-        Expanded(
-          child: _DayHeaderCell(
-            date: weekStart.addDays(d),
-            today: today,
+  // Fixed-height strip with a 28px day circle: unclamped accessibility
+  // sizes overflow it.
+  Widget build(BuildContext context) => MediaQuery.withClampedTextScaling(
+    maxScaleFactor: 1.3,
+    child: Row(
+      children: [
+        SizedBox(width: rulerWidth),
+        for (var d = 0; d < 5; d++)
+          Expanded(
+            child: _DayHeaderCell(date: weekStart.addDays(d), today: today),
           ),
-        ),
-    ],
+      ],
+    ),
   );
 }
 

lib/view/pages/timetable/widgets/calendar/week_grid.dart

@@ -95,20 +95,24 @@ class _PeriodRuler extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
-    return SizedBox(
-      width: width,
-      child: Stack(
-        clipBehavior: Clip.none,
-        children: [
-          for (final period in schedule.periods)
-            Positioned(
-              top: layout.topOf(period),
-              height: layout.heightOf(period),
-              left: 0,
-              right: 0,
-              child: _PeriodLabel(period: period, theme: theme),
-            ),
-        ],
+    // Fixed ruler width and period heights: past this the labels overlap.
+    return MediaQuery.withClampedTextScaling(
+      maxScaleFactor: 1.3,
+      child: SizedBox(
+        width: width,
+        child: Stack(
+          clipBehavior: Clip.none,
+          children: [
+            for (final period in schedule.periods)
+              Positioned(
+                top: layout.topOf(period),
+                height: layout.heightOf(period),
+                left: 0,
+                right: 0,
+                child: _PeriodLabel(period: period, theme: theme),
+              ),
+          ],
+        ),
       ),
     );
   }
@@ -155,7 +159,11 @@ class _PeriodLabel extends StatelessWidget {
 
     return LayoutBuilder(
       builder: (context, constraints) {
-        final showTimes = constraints.maxHeight >= 38;
+        // Both times plus the number, at the current text scale (9 + 9 + 14
+        // plus the 3px insets and some air — 38px at scale 1).
+        final scaler = MediaQuery.textScalerOf(context);
+        final needed = 2 * scaler.scale(9) + scaler.scale(14) + 6;
+        final showTimes = constraints.maxHeight >= needed;
         return DecoratedBox(
           decoration: BoxDecoration(
             border: Border(top: BorderSide(color: dividerColor, width: 0.5)),
@@ -169,11 +177,10 @@ class _PeriodLabel extends StatelessWidget {
                   top: 3,
                   left: 0,
                   right: 0,
-                  child: Text(
+                  child: _timeText(
                     _format(period.start),
-                    style: timeStyle,
-                    textAlign: TextAlign.center,
-                    textHeightBehavior: tightTextHeight,
+                    timeStyle,
+                    tightTextHeight,
                   ),
                 ),
               Text(
@@ -191,11 +198,10 @@ class _PeriodLabel extends StatelessWidget {
                   bottom: 3,
                   left: 0,
                   right: 0,
-                  child: Text(
+                  child: _timeText(
                     _format(period.end),
-                    style: timeStyle,
-                    textAlign: TextAlign.center,
-                    textHeightBehavior: tightTextHeight,
+                    timeStyle,
+                    tightTextHeight,
                   ),
                 ),
             ],
@@ -205,6 +211,24 @@ class _PeriodLabel extends StatelessWidget {
     );
   }
 
+  /// The ruler is narrow: a scaled-up time must shrink, never wrap into the
+  /// period number.
+  static Widget _timeText(
+    String text,
+    TextStyle? style,
+    TextHeightBehavior heightBehavior,
+  ) => FittedBox(
+    fit: BoxFit.scaleDown,
+    child: Text(
+      text,
+      style: style,
+      maxLines: 1,
+      softWrap: false,
+      textAlign: TextAlign.center,
+      textHeightBehavior: heightBehavior,
+    ),
+  );
+
   static String _format(TimeOfDay t) =>
       '${t.hour.toString().padLeft(2, '0')}:${t.minute.toString().padLeft(2, '0')}';
 }