feat(telemetry): session journey view replaces raw events table

- sessions listed from client_events grouped by session id (7d window)
- timeline sheet merges page views, client events, errors, and server-fn
  activities joined by player within the session window
- vitals excluded from timelines; gap markers over 5 minutes

src/app/routes/_authed/admin/telemetry.tsx

@@ -7,7 +7,7 @@ const TAB_ROUTES = {
   usage: "/admin/telemetry/usage",
   players: "/admin/telemetry/players",
   functions: "/admin/telemetry/functions",
-  events: "/admin/telemetry/events",
+  sessions: "/admin/telemetry/sessions",
   errors: "/admin/telemetry/errors",
 } as const;
 
@@ -50,8 +50,8 @@ function TelemetryLayout() {
         <Tabs.Tab value="functions">
           <Trans>Functions</Trans>
         </Tabs.Tab>
-        <Tabs.Tab value="events">
-          <Trans>Events</Trans>
+        <Tabs.Tab value="sessions">
+          <Trans>Sessions</Trans>
         </Tabs.Tab>
         <Tabs.Tab value="errors">
           <Trans>Errors</Trans>

src/app/routes/_authed/admin/telemetry/events.tsx

@@ -1,28 +0,0 @@
-import { createFileRoute } from "@tanstack/react-router";
-import { Suspense } from "react";
-import { prefetchServerQuery } from "@/lib/tanstack-query/utils/prefetch";
-import { telemetryQueries, defaultClientEventParams, ClientEventsTable } from "@/features/telemetry";
-import { playerQueries } from "@/features/players";
-import { ListSkeleton } from "@/components/skeletons";
-
-export const Route = createFileRoute("/_authed/admin/telemetry/events")({
-  component: EventsTab,
-  beforeLoad: ({ context }) => {
-    const queryClient = context.queryClient;
-    prefetchServerQuery(queryClient, telemetryQueries.events(defaultClientEventParams));
-    prefetchServerQuery(queryClient, playerQueries.list());
-  },
-  loader: () => ({
-    withPadding: false,
-    fullWidth: true,
-    refresh: [telemetryQueries.events(defaultClientEventParams).queryKey],
-  }),
-});
-
-function EventsTab() {
-  return (
-    <Suspense fallback={<ListSkeleton rows={8} withSearch withSubtitle withTrailing="text" />}>
-      <ClientEventsTable />
-    </Suspense>
-  );
-}

src/app/routes/_authed/admin/telemetry/sessions.tsx

@@ -0,0 +1,25 @@
+import { createFileRoute } from "@tanstack/react-router";
+import { Suspense } from "react";
+import { prefetchServerQuery } from "@/lib/tanstack-query/utils/prefetch";
+import { telemetryQueries, SessionsList, defaultSessionParams } from "@/features/telemetry";
+import { ListSkeleton } from "@/components/skeletons";
+
+export const Route = createFileRoute("/_authed/admin/telemetry/sessions")({
+  component: SessionsTab,
+  beforeLoad: ({ context }) => {
+    prefetchServerQuery(context.queryClient, telemetryQueries.sessions(defaultSessionParams));
+  },
+  loader: () => ({
+    withPadding: false,
+    fullWidth: true,
+    refresh: [telemetryQueries.sessions(defaultSessionParams).queryKey],
+  }),
+});
+
+function SessionsTab() {
+  return (
+    <Suspense fallback={<ListSkeleton rows={8} withSubtitle withTrailing="text" />}>
+      <SessionsList />
+    </Suspense>
+  );
+}