Fix MPV menu: resolve Lua syntax error and enhance logging

- Remove extra 'end)' that caused '<eof>' expected syntax error at line 2834
- Add comprehensive logging to M.show_menu() with [MENU] prefix
- Add logging wrappers to keybindings (m and mbtn_right)
- Implement fallback menu opening methods (commandv and command)
- Fix audio-display mpv.conf setting to 'no' (was invalid 'yes')

MPV/portable_config/input.conf

@@ -0,0 +1,18 @@
+# Custom input bindings for Medios-Macina
+# This file overrides MPV's default input bindings to ensure our script bindings work.
+
+# Override MPV's default right-click behavior (which toggles pause)
+# and route it to our custom menu handler instead.
+# Use script-message to directly call the Lua function
+mbtn_right script-message medios-menu-trigger
+
+# Menu toggle (middle-click alternative if needed)
+m script-message medios-menu-trigger
+
+# Standard info/delete shortcuts
+ctrl+i script-message medios-info-trigger
+ctrl+Del script-message medios-delete-trigger
+
+# Lyrics
+l script-message medeia-lyric-toggle-trigger
+L script-message medeia-lyric-toggle-shift-trigger