android: refine chat header and top pinned/audio strips

android/CHANGELOG.md

@@ -891,3 +891,13 @@
   - closing search now also clears active query/filter without re-entering chat.
 - Added automatic inline-search collapse when entering multi-select mode.
 - Reworked message tap action sheet to Telegram-like list actions with icons and clearer destructive `Delete` row styling.
+
+### Step 125 - Chat header/top strips visual refinement
+- Refined chat header density and typography to be closer to Telegram-like proportions.
+- Updated pinned strip visual:
+  - accent vertical marker,
+  - tighter spacing,
+  - cleaner title/content hierarchy.
+- Added top mini audio strip under pinned area:
+  - shows latest audio/voice context from loaded chat,
+  - includes play affordance, speed badge, and dismiss action.