Launch mpv in an idle process.

migrations/00001_create_watched_table.sql

@@ -8,6 +8,6 @@ CREATE TABLE watched (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        profile INTEGER NOT NULL,
        path TEXT NOT NULL,
-       recorded_at DATE NOT NULL,
+       watched_at DATE NOT NULL,
        FOREIGN KEY(profile) REFERENCES profile(id)
 );