Update README: Servers & Tasks module is now built

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

README.md

@@ -20,10 +20,12 @@ Built so far:
 - **DNS** — zone/record management across Cloudflare, Loopia, Pi-hole, Azure
   DNS, cPanel, and Technitium; providers are configured in-app (not via env
   vars) and their credentials are encrypted at rest
+- **Servers & Tasks** — cron/systemd tracking across Debian/Raspbian servers
+  via a lightweight push agent (`agent/linux/`), plus manual entries for
+  things an agent can't see (Docker jobs, backups)
 
 Not yet built (see `.claude/plans` for the full delivery plan):
 
-- Servers & scheduled task tracking (cron/systemd via agent)
 - Live integrations: Proxmox, Synology, Semaphore, Tailscale, Gitea, Dockhand
 
 ## Requirements