android: add chat menu and info tabs shell

android/CHANGELOG.md

@@ -862,3 +862,17 @@
   - richer reaction row (`❤️ 👍 👎 🔥 🥰 👏 😁`),
   - reply/edit/forward/delete actions kept in one sheet.
 - Removed duplicate/conflicting selection controls between top and bottom action rows.
+
+### Step 122 - Chat 3-dot menu + chat info media tabs shell
+- Added chat header `3-dot` popup menu with Telegram-like actions:
+  - `Chat info`
+  - `Search`
+  - `Notifications`
+  - `Change wallpaper`
+  - `Clear history`
+- Added `Chat info` bottom sheet with tabbed sections:
+  - `Media`
+  - `Files`
+  - `Links`
+  - `Voice`
+- Implemented local tab content from current loaded chat messages/attachments to provide immediate media/files/links/voice overview.