Fix video not advancing + media not downloading on same-version startup

BUG-009: _on_video_eos was empty (stub). Added Clock.schedule_once
for next_media() when video reaches end of stream.

BUG-008: download_media_files only ran when server_version >
local_version. Added download check in up-to-date branch so media
files are synced even when playlist version hasn't changed.

windows/development-track.md

@@ -99,12 +99,22 @@
 - **Files:** `windows/run_win.py`, `windows/cef_browser.py`
 
 ### [BUG-008] Intro video and media files not found at runtime
-- **Status:** 🟡 **Known** 2026-07-24
+- **Status:** ✅ **Fixed** 2026-07-24
 - **Symptom:** `[ERROR] [Image] Error loading <...intro1.mp4>` — intro
   broken. Also `❌ Media file not found` for playlist items.
-- **Root cause:** Media files are not bundled in .exe — must be downloaded
-  from server. Player connects (v16 received) but hasn't downloaded files.
-- **Fix:** Verify server is sending media content and player downloads it.
+- **Root cause:** Media download only ran when `server_version > local_version`.
+  When versions matched (v16 == v16), `download_media_files` was never called
+  → media folder stayed empty.
+- **Fix:** Added download check in the "up to date" branch — now downloads
+  missing media files even when playlist version hasn't changed.
+
+### [BUG-009] Video never advances to next item (EOS handler empty)
+- **Status:** ✅ **Fixed** 2026-07-24
+- **Symptom:** Video plays but never advances to the next playlist item.
+- **Root cause:** `_on_video_eos()` callback was a stub — just logged
+  "Video finished playing (EOS)" but never called `next_media()`.
+- **Fix:** Added `Clock.unschedule(self.next_media)` + `Clock.schedule_once`
+  to advance after 0.5s when a video reaches end of stream.
 
 ---