Removes the legacy tailnet v1 API tables (`tailnet_clients`, `tailnet_agents`, `tailnet_client_subscriptions`) and their associated queries, triggers, and functions. These were superseded by the v2 tables (`tailnet_peers`, `tailnet_tunnels`) in migration 000168, and the v1 API code was removed in commit d6154c4310, but the database artifacts were never cleaned up.
**Changes:**
- New migration `000410_remove_tailnet_v1_tables` to drop the unused tables
- Removed 11 unused queries from `tailnet.sql`
- Removed associated manual wrapper methods in `dbauthz` and `dbmetrics`
- ~930 lines deleted across 11 files
* fix: avoid deleting peers on graceful close
- Fixes an issue where a coordinator deletes all
its peers on shutdown. This can cause disconnects
whenever a coderd is redeployed.
Adds cleanup queries to clean out "lost" peer and tunnel state after 24 hours. We leave this state in the database so that anything trying to connect to the peer can see that it was lost, but clean it up after 24 hours to ensure our table doesn't grow without bounds.
Spike Curtis