diff --git a/site/src/components/ActivityDetail.svelte b/site/src/components/ActivityDetail.svelte
index bf16b09..5632622 100644
--- a/site/src/components/ActivityDetail.svelte
+++ b/site/src/components/ActivityDetail.svelte
@@ -27,9 +27,8 @@
   $: displayTitle = localTitle || activity.title;
 
   onMount(async () => {
-    if (!activity.detail_url) return;
     try {
-      detail = await loadActivity(activity.id, activity.detail_url, base);
+      detail = await loadActivity(activity.id, activity.detail_url ?? '', base);
       if (!detail) throw new Error('Activity not found');
     } catch (e: any) {
       error = e.message;
diff --git a/site/src/components/ActivityFeed.svelte b/site/src/components/ActivityFeed.svelte
index a0e5240..3d3e466 100644
--- a/site/src/components/ActivityFeed.svelte
+++ b/site/src/components/ActivityFeed.svelte
@@ -111,7 +111,7 @@
   <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
     {#each visible as a (a.id)}
       <a
-        href={`${import.meta.env.BASE_URL}activity/${a.id}/`}
+        href={a.detail_url ? `${import.meta.env.BASE_URL}activity/${a.id}/` : `${import.meta.env.BASE_URL}activity/local/?id=${a.id}`}
         class="block rounded-xl bg-zinc-900 border border-zinc-800 p-4 hover:border-zinc-600 hover:bg-zinc-800/80 transition-all group"
       >
         <!-- header -->
diff --git a/site/src/components/LocalActivityDetail.svelte b/site/src/components/LocalActivityDetail.svelte
new file mode 100644
index 0000000..511f5f3
--- /dev/null
+++ b/site/src/components/LocalActivityDetail.svelte
@@ -0,0 +1,27 @@
+<script lang="ts">
+  import { onMount } from 'svelte';
+  import { getLocalActivity } from '../lib/localstore';
+  import type { ActivitySummary } from '../lib/types';
+  import ActivityDetail from './ActivityDetail.svelte';
+
+  export let base: string = '/';
+
+  let activity: ActivitySummary | null = null;
+  let error = '';
+
+  onMount(async () => {
+    const id = new URLSearchParams(window.location.search).get('id');
+    if (!id) { error = 'No activity ID in URL.'; return; }
+    const found = await getLocalActivity(id);
+    if (!found) { error = `Activity "${id}" not found on this device.`; return; }
+    activity = found;
+  });
+</script>
+
+{#if error}
+  <p class="text-red-400 text-sm py-12 text-center">{error}</p>
+{:else if activity}
+  <ActivityDetail {activity} {base} athlete={null} />
+{:else}
+  <div class="h-32 rounded-xl bg-zinc-900 border border-zinc-800 animate-pulse mt-4"></div>
+{/if}
diff --git a/site/src/layouts/Base.astro b/site/src/layouts/Base.astro
index 5d78e83..3d17273 100644
--- a/site/src/layouts/Base.astro
+++ b/site/src/layouts/Base.astro
@@ -21,6 +21,13 @@ const baseUrl = import.meta.env.BASE_URL ?? '/';
     document.documentElement.setAttribute('data-theme', t);
   </script>
 
+  <!-- Reload on bfcache restore so client:only components re-mount -->
+  <script is:inline>
+    window.addEventListener('pageshow', function(e) {
+      if (e.persisted) window.location.reload();
+    });
+  </script>
+
   <style is:global>
     /* ── Theme tokens ─────────────────────────────────────────────────────── */
     :root, [data-theme="dark"] {
diff --git a/site/src/lib/localstore.ts b/site/src/lib/localstore.ts
index 065439a..cdbdf2a 100644
--- a/site/src/lib/localstore.ts
+++ b/site/src/lib/localstore.ts
@@ -65,6 +65,12 @@ export async function listLocalActivities(): Promise<ActivitySummary[]> {
   return (await idbGet<ActivitySummary[]>('/data/local-index')) ?? [];
 }
 
+/** Return the summary for a single locally-stored activity, or null. */
+export async function getLocalActivity(id: string): Promise<ActivitySummary | null> {
+  const list = await listLocalActivities();
+  return list.find(a => a.id === id) ?? null;
+}
+
 /** Return true if at least one activity is stored locally. */
 export async function hasLocalActivities(): Promise<boolean> {
   const list = await listLocalActivities();
@@ -83,7 +89,12 @@ const SUMMARY_KEYS = [
 ] as const;
 
 function toSummary(detail: Record<string, unknown>): ActivitySummary {
-  return Object.fromEntries(
+  const id = detail.id as string;
+  const summary = Object.fromEntries(
     SUMMARY_KEYS.filter(k => k in detail).map(k => [k, detail[k]])
   );
+  // These live in the index summary, not the detail JSON — derive from id
+  if (!summary.detail_url) summary.detail_url = `activities/${id}.json`;
+  if (!summary.track_url && detail.bbox)  summary.track_url = `activities/${id}.geojson`;
+  return summary;
 }
diff --git a/site/src/pages/activity/[id].astro b/site/src/pages/activity/[id].astro
index 56a5579..37dd25d 100644
--- a/site/src/pages/activity/[id].astro
+++ b/site/src/pages/activity/[id].astro
@@ -6,17 +6,25 @@ import ActivityDetail from '../../components/ActivityDetail.svelte';
 import type { BASIndex, ActivitySummary, AthleteZones } from '../../lib/types';
 
 export async function getStaticPaths() {
-  const dataDir = process.env.BINCIO_DATA_DIR
-    ?? resolve(process.cwd(), '..', 'bincio_data');
-  const raw = readFileSync(join(dataDir, 'index.json'), 'utf-8');
-  const index: BASIndex = JSON.parse(raw);
+  try {
+    const candidates = [
+      process.env.BINCIO_DATA_DIR,
+      resolve(process.cwd(), 'public', 'data'),  // symlinked by `bincio render`
+      resolve(process.cwd(), '..', 'bincio_data'),
+    ].filter(Boolean) as string[];
+    const dataDir = candidates.find(d => { try { readFileSync(join(d, 'index.json')); return true; } catch { return false; } })!;
+    const raw = readFileSync(join(dataDir, 'index.json'), 'utf-8');
+    const index: BASIndex = JSON.parse(raw);
 
-  return index.activities
-    .filter(a => a.privacy !== 'private' && a.id)
-    .map(a => ({
-      params: { id: a.id },
-      props: { activity: a, athlete: index.owner.athlete ?? null },
-    }));
+    return index.activities
+      .filter(a => a.privacy !== 'private' && a.id)
+      .map(a => ({
+        params: { id: a.id },
+        props: { activity: a, athlete: index.owner.athlete ?? null },
+      }));
+  } catch {
+    return [];
+  }
 }
 
 const { activity, athlete } = Astro.props as { activity: ActivitySummary; athlete: AthleteZones | null };
diff --git a/site/src/pages/activity/local/index.astro b/site/src/pages/activity/local/index.astro
new file mode 100644
index 0000000..15e46e4
--- /dev/null
+++ b/site/src/pages/activity/local/index.astro
@@ -0,0 +1,8 @@
+---
+import Base from '../../../layouts/Base.astro';
+import LocalActivityDetail from '../../../components/LocalActivityDetail.svelte';
+const base = import.meta.env.BASE_URL;
+---
+<Base title="Activity — BincioActivity">
+  <LocalActivityDetail {base} client:only="svelte" />
+</Base>
diff --git a/site/src/pages/convert/index.astro b/site/src/pages/convert/index.astro
index 7c5dc13..515a0b4 100644
--- a/site/src/pages/convert/index.astro
+++ b/site/src/pages/convert/index.astro
@@ -92,6 +92,7 @@ const baseUrl = import.meta.env.BASE_URL ?? '/';
 
 <script>
   import { saveActivityLocally } from '../../lib/localstore';
+  import { formatDate, formatTime } from '../../lib/format';
 
   // ── Config ──────────────────────────────────────────────────────────────────
   const _cfg     = document.getElementById('conv-config') as HTMLElement;
@@ -269,7 +270,7 @@ json.dumps({'id': act_id, 'detail': detail, 'geojson': geojson})
     const d = r.detail;
     document.getElementById('res-sport-icon').textContent = SPORT_ICONS[d.sport] ?? '⚡';
     document.getElementById('res-title').textContent = d.title || 'Untitled';
-    document.getElementById('res-date').textContent = d.started_at ? new Date(d.started_at).toLocaleString() : '';
+    document.getElementById('res-date').textContent = d.started_at ? `${formatDate(d.started_at)} · ${formatTime(d.started_at)}` : '';
 
     const distKm = d.distance_m ? (d.distance_m / 1000).toFixed(1) + ' km' : '—';
     const dur = d.moving_time_s ?? d.duration_s;
@@ -299,7 +300,7 @@ json.dumps({'id': act_id, 'detail': detail, 'geojson': geojson})
       await saveActivityLocally(lastResult.detail, lastResult.geojson ?? null);
       btn.textContent = '✓ Saved to device';
       btn.style.background = '#16a34a';
-      saveStatus.textContent = 'Activity saved. Visit the feed to see it.';
+      saveStatus.innerHTML = `Activity saved. <a href="${baseUrl}activity/local/?id=${lastResult.id}" style="color:#86efac;text-decoration:underline">View activity →</a>`;
       saveStatus.style.color = '#4ade80';
     } catch (e) {
       btn.disabled = false;