android: micro-polish chat bubbles and composer visuals

android/CHANGELOG.md

@@ -901,3 +901,13 @@
 - Added top mini audio strip under pinned area:
   - shows latest audio/voice context from loaded chat,
   - includes play affordance, speed badge, and dismiss action.
+
+### Step 126 - Message bubble/composer micro-polish
+- Updated message bubble sizing and density:
+  - reduced bubble width for cleaner conversation rhythm,
+  - tighter vertical spacing,
+  - text style adjusted for better readability.
+- Refined bottom composer visuals:
+  - switched to Telegram-like rounded input container look,
+  - emoji/attach/send buttons now use circular tinted surfaces,
+  - text input moved to filled style with hidden indicator lines.