feat: add audit and app log services

internal/services/store.go

@@ -126,6 +126,18 @@ func Migrate(db *sql.DB) error {
 
 	CREATE INDEX IF NOT EXISTS idx_image_tasks_status_created_at ON image_tasks(status, created_at);
 	CREATE INDEX IF NOT EXISTS idx_image_task_results_task_id ON image_task_results(task_id);
+
+	CREATE TABLE IF NOT EXISTS app_logs (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		level TEXT NOT NULL,
+		module TEXT NOT NULL,
+		message TEXT NOT NULL,
+		detail TEXT NOT NULL,
+		created_at TEXT NOT NULL
+	);
+
+	CREATE INDEX IF NOT EXISTS idx_app_logs_level_created_at ON app_logs(level, created_at);
+	CREATE INDEX IF NOT EXISTS idx_audit_logs_action_created_at ON audit_logs(action, created_at);
 	`)
 	if err != nil {
 		return err