android: add seek/pause controls for video and audio players

android/CHANGELOG.md

@@ -974,3 +974,12 @@
   - formatting toolbar is hidden while recording is active.
 - Prevented controls collision for locked-recording actions:
   - `Cancel/Send` now render on a separate row in locked state.
+
+### Step 133 - Video/audio player controls upgrade
+- Upgraded fullscreen video viewer controls:
+  - play/pause button,
+  - seek slider (scrubbing),
+  - current time / total duration labels.
+- Upgraded attachment audio player behavior (voice + audio):
+  - added seek slider for manual rewind/fast-forward,
+  - unified speed toggle for both `voice` and `audio` playback.