feat(plugins): Traefik problems first, UniFi/SNMP/fleet on shared shapes, audit names its entities, templates on tokens (#5126)

Traefik: routers are graded from their latest scrape (router_state: crit on
any real 5xx share, warn on p95 past the latency critical cutoff or a high
4xx share). Failing and slow routers lead as cards that say why; healthy
ones fold into one table that stays open or shut across polls. Proxy
counts are stat tiles; certificates are graded by Settings -> Thresholds
(tls_days).

UniFi: WAN health is a stat strip (latency graded by the thresholds),
devices carry status dots, event categories and firewall actions are
badges, the alarm count reuses .count-badge (renamed from .nav-count).
SNMP: each device wears a status badge and its readings are stat tiles.

Agent fleet: the table comes first, with a Status column (Reporting /
Silent / Never reported, by the host page's stale_after_seconds), silent
agents first, hosts linked, last seen as |ago.

Audit: entries name their entity (one query per type, steward/audit/
service.py) and link it; something deleted since keeps the name its entry
recorded and says "(deleted)".

Tokens: charts read colours through chart-colors.js (stewardColor resolves
a token to the rgb the browser computed; Chart.js defaults take the page's
text and border colours), so host, history, Traefik and SNMP charts drop
their hex. Template hex colours reach 0 (HEX_CEILING = 0), the last rgba
pills go, and heavy weights (600/700/bold, 60 of them) become 500, the
house pair being 400/500; a guard keeps templates there.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

steward/audit/routes.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 import json
 from quart import Blueprint, render_template, request, current_app
 from sqlalchemy import select
+from steward.audit.service import entity_labels
 from steward.auth.middleware import require_role
 from steward.models.audit import AuditEvent
 from steward.models.users import UserRole
@@ -23,16 +24,21 @@ async def list_events():
         result = await db.execute(stmt)
         events = result.scalars().all()
 
-    # Parse detail_json for display
-    parsed = []
-    for e in events:
-        detail = {}
-        if e.detail_json:
-            try:
-                detail = json.loads(e.detail_json)
-            except (ValueError, TypeError):
-                detail = {"raw": e.detail_json}
-        parsed.append({"event": e, "detail": detail})
+        # Parse detail_json for display
+        parsed = []
+        for e in events:
+            detail = {}
+            if e.detail_json:
+                try:
+                    detail = json.loads(e.detail_json)
+                except (ValueError, TypeError):
+                    detail = {"raw": e.detail_json}
+            parsed.append({"event": e, "detail": detail})
+        labels = await entity_labels(db, parsed)
+
+    for item in parsed:
+        e = item["event"]
+        item["entity"] = labels.get((e.entity_type, str(e.entity_id))) if e.entity_id else None
 
     return await render_template(
         "audit/list.html",