feat(db): move auth schema into Drizzle structure and add user FK

- Move auth schema from auth-schema.ts to lib/db/schema/auth.ts
- Export auth tables (user, session, account, verification, passkey) via barrel
- Add FK from performanceEntries.userId to user.id
- Generate and apply migration for auth tables + user FK
- Remove unused echarts dependency

package.json

@@ -16,6 +16,7 @@
   "dependencies": {
     "@aws-sdk/client-s3": "^3.1036.0",
     "@better-auth/drizzle-adapter": "^1.6.9",
+    "@better-auth/passkey": "^1.6.9",
     "@elysia/eden": "^1.4.10",
     "@tiptap/core": "^3.22.4",
     "@tiptap/pm": "^3.22.4",