feat(db): auth_provider_config table + AES-256-GCM encryption helpers

Renumbered migration 0021 → 0023 to resolve conflict with pet_image and
logo_key migrations that landed on main after this branch was created.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/db/src/index.ts

@@ -4,6 +4,7 @@ import * as schema from "./schema.js";
 
 export * from "./schema.js";
 export { and, asc, desc, eq, exists, gte, gt, ilike, inArray, lt, lte, ne, or, sql } from "drizzle-orm";
+export { encryptSecret, decryptSecret } from "./crypto.js";
 
 let _db: ReturnType<typeof drizzle> | null = null;