feat(database): add index.ts with factory function

backend/src/database/index.ts

@@ -0,0 +1,26 @@
+import { SqliteAdapter } from './SqliteAdapter';
+import { migrationManager } from './migrations';
+
+export async function createDatabase(dbPath: string): Promise<SqliteAdapter> {
+  const db = new SqliteAdapter(dbPath);
+  
+  // Apply migrations
+  const currentVersion = await db.getMigrationVersion();
+  const targetVersion = migrationManager.getLatestVersion();
+  
+  if (currentVersion < targetVersion) {
+    // Apply all migrations from currentVersion + 1 to targetVersion
+    for (let version = currentVersion + 1; version <= targetVersion; version++) {
+      const migration = migrationManager.getMigrationByVersion(version);
+      if (migration) {
+        await db.runMigration(migration.up);
+        await db.setMigrationVersion(version);
+      }
+    }
+  }
+  
+  return db;
+}
+
+export * from './DatabaseInterface';
+export * from './SqliteAdapter';