feat: settings queries

src/db/settings.ts

@@ -0,0 +1,15 @@
+import type { Database } from 'better-sqlite3';
+
+export function getSetting(db: Database, key: string): string | null {
+  const row = db.prepare('SELECT value FROM settings WHERE key = ?').get(key) as { value: string } | undefined;
+  return row?.value ?? null;
+}
+
+export function setSetting(db: Database, key: string, value: string): void {
+  db.prepare('INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)').run(key, value);
+}
+
+export function getAllSettings(db: Database): Record<string, string> {
+  const rows = db.prepare('SELECT key, value FROM settings').all() as Array<{ key: string; value: string }>;
+  return Object.fromEntries(rows.map(r => [r.key, r.value]));
+}