huge refactor of plugin system

docs/MENU_TROUBLESHOOTING.md

@@ -18,8 +18,8 @@ UOSC defines its own right-click menu, and there's no straightforward way to ove
 3. **Right-click** - Attempts to trigger via input.conf, but UOSC overrides (needs investigation)
 
 ### How It Works
-- `MPV/portable_config/input.conf` routes keybindings to Lua handlers
-- `MPV/LUA/main.lua`:
+- `plugins/mpv/portable_config/input.conf` routes keybindings to Lua handlers
+- `plugins/mpv/LUA/main.lua`:
   - Registers script message handler: `medios-show-menu` 
   - Registers Lua keybindings for 'm' and 'z' keys
   - Both route to `M.show_menu()` which opens an UOSC menu with items
@@ -35,25 +35,25 @@ The menu calls UOSC's `open-menu` handler with JSON containing:
 - Start Helper (if not running)
 
 ## Files Modified
-- `MPV/LUA/main.lua`:
+- `plugins/mpv/LUA/main.lua`:
   - Fixed Lua syntax error (extra `end)`)
   - Added comprehensive `[MENU]` and `[KEY]` logging
   - Added 'm' and 'z' keybindings
   - Added `medios-show-menu` script message handler
   - Enhanced `M.show_menu()` with dual methods to call UOSC
 
-- `MPV/portable_config/input.conf`:
+- `plugins/mpv/portable_config/input.conf`:
   - Routes `mbtn_right` to `script-message medios-show-menu`
   - Routes 'm' key to `script-message medios-show-menu`
 
-- `MPV/portable_config/mpv.conf`:
+- `plugins/mpv/portable_config/mpv.conf`:
   - Fixed `audio-display` setting (was invalid `yes`, now `no`)
 
 ## Testing
 Run: `python test_menu.py`
 
 Or manually:
-1. Start MPV with: `mpv --script=MPV/LUA/main.lua --config-dir=MPV/portable_config --idle`
+1. Start MPV with: `mpv --script=plugins/mpv/LUA/main.lua --config-dir=plugins/mpv/portable_config --idle`
 2. Press 'm' or 'z' key
 3. Check logs at `Log/medeia-mpv-lua.log` for `[MENU]` entries