feat: add http, snmp, docker plugins; new widgets and routes for traefik/unifi/ups

- Add HTTP monitor plugin: endpoint checking with status history, latency tracking, time-range views
- Add SNMP plugin: OID polling, device management, metric recording
- Add Docker plugin: container status, resource usage, widget
- Traefik: access log widget, request chart widget, expanded routes
- UniFi: clients widget, devices widget, expanded poll routes
- UPS: history widget, additional routes
- Update plugin index with new entries

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ups/plugin.yaml

@@ -12,12 +12,25 @@ tags:
   - nut
 
 config:
+  # ── Managed NUT (run NUT inside this container) ────────────────────────────
+  # Enable to have FabledScryer manage the NUT daemon for you — no separate NUT
+  # install required.  Connects to your UPS over the network (SNMP or XML/HTTP).
+  # Changes take effect on the next container restart.
+  nut_managed: false
+  nut_ups_host: ""             # IP/hostname of UPS management card (required when nut_managed=true)
+  nut_driver: "snmp-ups"       # snmp-ups (most UPS brands) or netxml-ups (Eaton XML/HTTP)
+  nut_snmp_community: "public" # SNMP community string (snmp-ups only)
+  nut_snmp_version: "v1"       # v1 or v2c (snmp-ups only)
+  # ── NUT connection ─────────────────────────────────────────────────────────
+  # When nut_managed=true these default to localhost (the managed instance).
+  # Point at an external NUT server if nut_managed=false.
   nut_host: "localhost"
   nut_port: 3493
   ups_name: "ups"
   nut_username: ""            # leave blank if NUT is configured without auth
   nut_password: ""
   poll_interval_seconds: 30
+  # ── Ansible shutdown automation ────────────────────────────────────────────
   shutdown_after_seconds: 300  # seconds on battery before triggering shutdown (0 = disabled)
   shutdown_source: ""          # Ansible source name containing the shutdown playbook
   shutdown_playbook: ""        # relative path within source, e.g. "shutdown.yml"