implemented foreign timetable support for students, teachers, rooms, and classes, including a searchable element picker with favorites support, introduced a capabilities system for feature gating, refactored the timetable UI into a reusable TimetableCalendarView component, and redesigned the chat input field with a unified emoji picker and integrated attachment actions.

lib/widget/emoji_text.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+/// Central place for rendering emoji glyphs (reactions, pickers, …).
+///
+/// Emojis used to be drawn as bare `Text(emoji)` widgets all over the Talk UI,
+/// which meant they inherited the small default body text size and looked
+/// inconsistent. [EmojiText] gives every emoji a uniform, comfortably large
+/// size and forces the platform's color-emoji font so the rendering is the same
+/// everywhere.
+class EmojiText extends StatelessWidget {
+  /// Size for emojis shown inline next to other text, e.g. reaction chips.
+  static const double sizeInline = 15;
+
+  /// Default size for standalone emojis, e.g. list leadings.
+  static const double sizeStandard = 20;
+
+  /// Size for primary tap targets, e.g. the quick-reaction buttons.
+  static const double sizeLarge = 24;
+
+  final String emoji;
+  final double size;
+
+  const EmojiText(this.emoji, {this.size = sizeStandard, super.key});
+
+  @override
+  Widget build(BuildContext context) => Text(
+    emoji,
+    style: TextStyle(
+      fontSize: size,
+      height: 1.0,
+      // Render emojis with the platform color-emoji font instead of the app
+      // font, so they look identical across all usages and devices.
+      fontFamilyFallback: const ['Noto Color Emoji', 'Apple Color Emoji'],
+    ),
+  );
+}