refactor: enhance manual chunking in Vite config for better code splitting

src/services/storage-config-repo.ts

@@ -0,0 +1,22 @@
+export async function isRegistered(db: D1Database): Promise<boolean> {
+  const row = await db.prepare('SELECT value FROM config WHERE key = ?').bind('registered').first<{ value: string }>();
+  return row?.value === 'true';
+}
+
+export async function getConfigValue(db: D1Database, key: string): Promise<string | null> {
+  const row = await db.prepare('SELECT value FROM config WHERE key = ?').bind(key).first<{ value: string }>();
+  return typeof row?.value === 'string' ? row.value : null;
+}
+
+export async function setConfigValue(db: D1Database, key: string, value: string): Promise<void> {
+  await db
+    .prepare('INSERT INTO config(key, value) VALUES(?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value')
+    .bind(key, value)
+    .run();
+}
+
+export async function setRegistered(db: D1Database): Promise<void> {
+  await db.prepare('INSERT INTO config(key, value) VALUES(?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value')
+    .bind('registered', 'true')
+    .run();
+}