fix(auth): classify services by service_type, not name heuristics

Coolify exposes the template slug on `service_type`; the list endpoint
returns only summaries, so the auth list handler now fetches each
service individually to classify it reliably. Users can name auth
services anything (e.g. "my-login") and they still show up as auth
providers.

Made-with: Cursor

lib/coolify.ts

@@ -560,6 +560,8 @@ export interface CoolifyService {
   uuid: string;
   name: string;
   status?: string;
+  /** Coolify template slug the service was provisioned from, e.g. "pocketbase". */
+  service_type?: string;
   project_uuid?: string;
   environment_id?: number;
   environment?: { id?: number; project_uuid?: string; project?: { uuid?: string } };