Description: Fix pipeline subscription using wrong source datamodel.
Changes
- Fix pipeline subscription using wrong source datamodel (#2634).
- Backend: restart worker + reliable deferred backfill on table add (#2640).
- Migrate kafka_to_kafka_target / kafka_to_oracle / kafka_to_webhook / snowflake_to_kafka to env-only credentials (#2611).
- Remove kafka_connect worker; migrate Postgres/MySQL to popsink-connect (#2622).
- Google Ads OAuth — generic, plug-and-play OAuth plumbing (#2511).
- Subscription logs tab: replace infinite “Loading logs” with a clear empty state (#2645).
- Switch to popsinktansu (#2657).