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>

traefik/routes.py

@@ -71,7 +71,7 @@ async def rows():
 
         b_secs = bucket_seconds(since)
         bucket_col = (
-            cast(func.strftime('%s', TraefikMetric.scraped_at), Integer) / b_secs
+            cast(func.extract('epoch', TraefikMetric.scraped_at), Integer) / b_secs
         ).label("bucket")
 
         router_data = []
@@ -195,6 +195,102 @@ async def widget():
     )
 
 
+@traefik_bp.get("/widget/access_log")
+@require_role(UserRole.viewer)
+async def widget_access_log():
+    """HTMX dashboard widget: traffic origin summary with IP filter."""
+    from collections import defaultdict
+    ip_filter = request.args.get("ip_filter", "all")
+    limit = max(1, min(50, int(request.args.get("limit", 10) or 10)))
+    widget_id = request.args.get("wid", "0")
+
+    async with current_app.db_sessionmaker() as db:
+        result = await db.execute(
+            select(TraefikAccessSummary)
+            .order_by(TraefikAccessSummary.period_end.desc())
+            .limit(12)  # last ~1 hour of 5-min windows
+        )
+        rows = result.scalars().all()
+
+    if not rows:
+        return await render_template("traefik/widget_access_log.html",
+                                     summary=None, widget_id=widget_id)
+
+    total = sum(r.total_requests for r in rows)
+    internal = sum(r.internal_requests for r in rows)
+    external = sum(r.external_requests for r in rows)
+
+    ip_counts: dict = defaultdict(lambda: {"count": 0, "internal": True})
+    for row in rows:
+        for entry in json.loads(row.top_ips_json):
+            k = entry["ip"]
+            ip_counts[k]["count"] += entry["count"]
+            ip_counts[k]["internal"] = entry.get("internal", True)
+
+    all_ips = sorted(
+        [{"ip": k, **v} for k, v in ip_counts.items()],
+        key=lambda x: x["count"], reverse=True,
+    )
+    if ip_filter == "internal":
+        all_ips = [e for e in all_ips if e["internal"]]
+    elif ip_filter == "external":
+        all_ips = [e for e in all_ips if not e["internal"]]
+
+    summary = {
+        "total": total,
+        "internal": internal,
+        "external": external,
+        "external_pct": (external / total * 100.0) if total else 0.0,
+        "top_ips": all_ips[:limit],
+        "ip_filter": ip_filter,
+    }
+    return await render_template("traefik/widget_access_log.html",
+                                 summary=summary, widget_id=widget_id)
+
+
+@traefik_bp.get("/widget/request_chart")
+@require_role(UserRole.viewer)
+async def widget_request_chart():
+    """HTMX dashboard widget: Chart.js request rate + error % over time."""
+    from datetime import timedelta
+    hours = max(1, min(24, int(request.args.get("hours", 6) or 6)))
+    widget_id = request.args.get("wid", "0")
+
+    since = datetime.now(timezone.utc) - timedelta(hours=hours)
+    b_secs = max(60, (hours * 3600) // 80)  # ~80 buckets
+
+    bucket_col = (
+        cast(func.extract('epoch', TraefikMetric.scraped_at), Integer) / b_secs
+    ).label("bucket")
+
+    async with current_app.db_sessionmaker() as db:
+        result = await db.execute(
+            select(
+                func.avg(TraefikMetric.request_rate).label("req_rate"),
+                func.avg(TraefikMetric.error_rate_5xx_pct).label("err_pct"),
+                func.min(TraefikMetric.scraped_at).label("scraped_at"),
+                bucket_col,
+            )
+            .where(TraefikMetric.scraped_at >= since)
+            .group_by(bucket_col)
+            .order_by(bucket_col)
+        )
+        history = result.all()
+
+    labels = list(range(len(history)))
+    req_rates = [round(r.req_rate or 0, 3) for r in history]
+    err_pcts = [round(r.err_pct or 0, 2) for r in history]
+
+    return await render_template(
+        "traefik/widget_request_chart.html",
+        labels_json=json.dumps(labels),
+        req_rate_json=json.dumps(req_rates),
+        error_rate_json=json.dumps(err_pcts),
+        widget_id=widget_id,
+        hours=hours,
+    )
+
+
 @traefik_bp.get("/traffic")
 @require_role(UserRole.viewer)
 async def traffic():