feat: Handy - groessere Symbole, Suche/Mitglieder im Menue, Kontakt-Banner repariert, Schrift 110 %, federnde Knoepfe

Bernds Feedback 2026-10-07:
- Schrift-Standard Handy 110 % (statt 115 %).
- PyrIconBtn: im Handy-Layout Symbol 22 px (vorher fest 16), Flaeche 40,
  Tippflaeche 44; Farben aus dem Farbmodus statt fest verdrahtet.
- Eingabeleiste: Anhaengen/GIF/Emoji/Senden auf dem Handy 22-23 px statt
  12-13 px.
- Chat-Kopf (Handy): Anrufen + Videoanruf sichtbar, Suchen + Mitglieder im
  Drei-Punkte-Menue.
- Aufklappbarer DM-Kopf als Ebenen: Zurueck + Symbole bleiben oben,
  Profilbereich gleitet darunter und nutzt die volle Breite (vorher Name zu
  "p..." gekuerzt, Symbole rutschten in die Mitte); Kuerzel im Avatar
  mittig, skaliert mit.
- SpringPress (widgets/spring_press.dart): federnde Druck-Rueckmeldung,
  aus bei "Animationen 0 %".

Co-Authored-By: Claude Opus 5.5 <[email protected]>

lib/features/chat/chat_composer.dart

@@ -7,7 +7,9 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:matrix/matrix.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:pyramid/core/settings_prefs.dart';
+import 'package:pyramid/core/appearance.dart';
 import 'package:pyramid/core/theme.dart';
+import 'package:pyramid/widgets/spring_press.dart';
 import 'package:pyramid/features/chat/attachment_dialog.dart';
 import 'package:pyramid/features/chat/emoji_picker.dart';
 import 'package:pyramid/features/chat/gif_sticker_picker.dart';
@@ -300,6 +302,8 @@ class _ChatComposerState extends ConsumerState<ChatComposer> {
     final pt = PyramidTheme.of(context);
     final size = MediaQuery.sizeOf(context);
     final isSmall = size.width < 400;
+    // Handy: größere Symbole (vorher 12–13 px, Bernds Feedback 2026-10-07).
+    final mobile = isMobileLayout(size);
     
     final roomName = widget.room.getLocalizedDisplayname();
     final placeholder = widget.room.isDirectChat
@@ -347,7 +351,7 @@ class _ChatComposerState extends ConsumerState<ChatComposer> {
                       icon: Icons.add_rounded,
                       tooltip: 'Datei anhängen',
                       pt: pt,
-                      size: size.width < 600 ? 24 : 30,
+                      size: mobile ? 42 : 30,
                       onTap: _pickAttachment,
                     ),
                     // Text input
@@ -397,14 +401,14 @@ class _ChatComposerState extends ConsumerState<ChatComposer> {
                           icon: Icons.gif_box_outlined,
                           tooltip: 'GIF',
                           pt: pt,
-                          size: size.width < 600 ? 22 : 26,
+                          size: mobile ? 40 : 26,
                           onTap: _toggleGifPicker,
                         ),
                         _ComposerIconBtn(
                           icon: Icons.tag_faces_rounded,
                           tooltip: 'Emoji',
                           pt: pt,
-                          size: size.width < 600 ? 22 : 26,
+                          size: mobile ? 40 : 26,
                           onTap: _toggleEmojiPicker,
                         ),
                         if (size.width > 600)
@@ -424,6 +428,7 @@ class _ChatComposerState extends ConsumerState<ChatComposer> {
                           canSend: _canSend,
                           pt: pt,
                           onTap: _send,
+                          size: mobile ? 42 : 36,
                         ),
                       ),
                   ],
@@ -461,9 +466,7 @@ class _ComposerIconBtnState extends State<_ComposerIconBtn> {
 
   @override
   Widget build(BuildContext context) {
-    final platform = Theme.of(context).platform;
-    final isMobile =
-        platform == TargetPlatform.android || platform == TargetPlatform.iOS;
+    final isMobile = isMobileLayout(MediaQuery.sizeOf(context));
     final touchSize = isMobile ? 44.0 : widget.size;
 
     return MouseRegion(
@@ -475,7 +478,9 @@ class _ComposerIconBtnState extends State<_ComposerIconBtn> {
         child: Tooltip(
           message: widget.tooltip,
           waitDuration: const Duration(milliseconds: 500),
-          child: SizedBox(
+          child: SpringPress(
+            enabled: widget.onTap != null,
+            child: SizedBox(
             width: touchSize,
             height: touchSize,
             child: Center(
@@ -497,6 +502,7 @@ class _ComposerIconBtnState extends State<_ComposerIconBtn> {
               ),
             ),
           ),
+          ),
         ),
       ),
     );
@@ -507,8 +513,14 @@ class _SendButton extends StatefulWidget {
   final bool canSend;
   final PyramidTheme pt;
   final VoidCallback onTap;
+  final double size;
 
-  const _SendButton({required this.canSend, required this.pt, required this.onTap});
+  const _SendButton({
+    required this.canSend,
+    required this.pt,
+    required this.onTap,
+    this.size = 36,
+  });
 
   @override
   State<_SendButton> createState() => _SendButtonState();
@@ -528,11 +540,14 @@ class _SendButtonState extends State<_SendButton> {
       onExit: (_) => setState(() => _hovered = false),
       child: GestureDetector(
         onTap: active ? widget.onTap : null,
-        child: AnimatedContainer(
+        child: SpringPress(
+          enabled: active,
+          pressedScale: 0.82,
+          child: AnimatedContainer(
           duration: const Duration(milliseconds: 180),
           curve: Curves.easeOutBack,
-          width: 36,
-          height: 36,
+          width: widget.size,
+          height: widget.size,
           decoration: BoxDecoration(
             color: active ? pt.accent : pt.bg3,
             borderRadius: BorderRadius.circular(pt.rSm),
@@ -549,11 +564,12 @@ class _SendButtonState extends State<_SendButton> {
           child: Center(
             child: Icon(
               Icons.send_rounded,
-              size: 16,
+              size: widget.size * 0.45,
               color: active ? pt.accentFg : pt.fgDim,
             ),
           ),
         ),
+        ),
       ),
     );
   }