Update README: Dockhand integration is now built

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

README.md

@@ -29,14 +29,17 @@ Built so far:
 - **Integrations → Gitea** — repo list with each repo's last CI run status,
   and re-running just the failed jobs in a run; a live repo-count widget
   (with a failing-build warning) on the Dashboard.
+- **Integrations → Dockhand** — container status across every Docker host
+  Dockhand manages (one credential covers all of them), with
+  start/stop/restart actions; a live running/total widget on the Dashboard.
 
-Both integrations follow the same config-in-UI + encrypted-credentials
+All three integrations follow the same config-in-UI + encrypted-credentials
 pattern as DNS providers, so the remaining ones slot into the same
 "Add integration" form as they're built.
 
 Not yet built (see `.claude/plans` for the full delivery plan):
 
-- Remaining live integrations: Proxmox, Synology, Semaphore, Dockhand
+- Remaining live integrations: Proxmox, Synology, Semaphore
 
 ## Requirements