feat(analytics): Umami website-analytics suite — world map, realtime, sessions, heatmap, pixel tracking, tracked links

Adds the read-side Umami integration queued in last week's
website-analytics plan (Phases 1–6 of `docs/website-analytics-flesh-out-plan.md`):

- Realtime panel polls Umami at 5s intervals; world map renders visitor
  origins via echarts + `public/world-map/echarts-world.json` topo.
- Sessions list + session-detail-sheet drill-down (per-session event
  timeline pulled from `/api/v1/website-analytics`).
- Weekly heatmap (day-of-week × hour-of-day) for engagement timing.
- Metric-detail pages under `/[portSlug]/website-analytics/[metric]`
  for pageviews / referrers / events deep-dives.
- Email-pixel write path: `/api/public/email-pixel/[sendId]` 1×1 GIF
  beacon backed by `email_open_tracking` (migration 0076); resolves
  inline on render in inbox.
- Tracked-link redirect: `/q/[slug]` routes through `tracked_links`
  (migration 0077) and forwards to the canonical destination after
  logging the click.
- Dashboard `website-glance-tile` now reads from the live Umami service
  instead of placeholder data.

Deps: `@umami/node`, `echarts`, `echarts-for-react`, `@types/geojson`,
`@types/topojson-client`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/(dashboard)/[portSlug]/website-analytics/[metric]/page.tsx

@@ -0,0 +1,33 @@
+import { notFound } from 'next/navigation';
+
+import { MetricDetailShell } from '@/components/website-analytics/metric-detail-shell';
+
+/**
+ * Full ranked-list view for one analytics metric (pages / referrers /
+ * countries / browsers / os / devices). Reached via the "View all" link
+ * on each top-N card. Honours the `range` (and optional `from`/`to`)
+ * query params so the detail page mirrors the time window the operator
+ * had selected on the parent page.
+ */
+
+const VALID_METRICS = ['pages', 'referrers', 'countries', 'browsers', 'os', 'devices'] as const;
+type ValidMetric = (typeof VALID_METRICS)[number];
+
+interface PageProps {
+  params: Promise<{ portSlug: string; metric: string }>;
+  searchParams: Promise<{ range?: string; from?: string; to?: string }>;
+}
+
+export default async function Page({ params, searchParams }: PageProps) {
+  const { metric } = await params;
+  const { range, from, to } = await searchParams;
+  if (!VALID_METRICS.includes(metric as ValidMetric)) notFound();
+  return (
+    <MetricDetailShell
+      metric={metric as ValidMetric}
+      initialRange={range ?? '30d'}
+      initialFrom={from}
+      initialTo={to}
+    />
+  );
+}