enable WAL

Signed-off-by: kaedwen <kaedwen@heinrich.blue>

pkg/db/db.go

@@ -39,11 +39,16 @@ func New(dbPath string, logger *slog.Logger) (Database, error) {
 
 	// Open database
 	// Note: Using modernc.org/sqlite (pure Go, no CGO) instead of mattn/go-sqlite3
-	db, err := sql.Open("sqlite", dbPath+"?_pragma=busy_timeout(5000)")
+	db, err := sql.Open("sqlite", dbPath+"?_pragma=busy_timeout(10000)&_pragma=journal_mode(WAL)&_pragma=synchronous(NORMAL)")
 	if err != nil {
 		return nil, fmt.Errorf("failed to open database: %w", err)
 	}
 
+	// Set connection pool limits to prevent "database is locked" errors
+	db.SetMaxOpenConns(1) // SQLite works best with single writer
+	db.SetMaxIdleConns(1)
+	db.SetConnMaxLifetime(0) // connections don't expire
+
 	// Test connection
 	if err := db.Ping(); err != nil {
 		db.Close()