Squash merge audio-player-component into main

backend/database/sql/schemas/player_state.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS player_state (
+    id INTEGER PRIMARY KEY CHECK(id = 1),
+    volume INTEGER NOT NULL DEFAULT 100,
+    muted BOOLEAN NOT NULL DEFAULT false,
+    last_track_path TEXT NOT NULL DEFAULT '',
+    last_position_seconds INTEGER NOT NULL DEFAULT 0
+);
+
+INSERT OR IGNORE INTO player_state (id) VALUES (1);