fix(journal): captures panel filter uses date_from and date_to

/api/journal/moments takes date_from + date_to query params, not the
single 'date' name the frontend was sending. Filter was silently
ignored; the panel showed every moment in the database ordered by
recency, making it look like a weird recap of past events instead of
today's captures.

No backend change; just send the right param names.

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

frontend/src/views/JournalView.vue

@@ -76,7 +76,15 @@ async function loadMoments() {
   }
   momentsLoading.value = true
   try {
-    moments.value = await listJournalMoments({ date: selectedDay.value, limit: 100 })
+    // /api/journal/moments takes date_from + date_to (NOT `date`).
+    // Passing a single ISO date for both bounds gives us the moments
+    // recorded on that calendar day, which is what the captures panel
+    // means by "today".
+    moments.value = await listJournalMoments({
+      date_from: selectedDay.value,
+      date_to: selectedDay.value,
+      limit: 100,
+    })
   } catch {
     /* silent — moments may not exist yet */
   } finally {