phase: 154_sync_status_freshness

All 4 task files exist in `complete/`, and only `00_phase.md` remains in `todo/`. This is the final verification pass. I'll read through the task files and check the current state of the code.

frontend/assets/sources.js

@@ -321,7 +321,9 @@
  * title + #sync-progress (A4 — the screen reader hears the whole
  * thing; the visible span carries main + count, the space between
  * them is the CSS gap). Every other #sync-label writer — the idle /
- * settle labels ("Sync sources", "Synced HH:MM"), the 202/409 click,
+ * settle labels ("Sync sources", "Synced <stamp>" — the date-
+ * qualified stamp from fmtSyncTime, phase 154: `HH:MM` on the same
+ * local day, the dated form otherwise), the 202/409 click,
  * the initSyncButton re-attach — goes through setSyncLabel(main)
  * (count hidden). The full-string shapes are byte-identical to the
  * pre-task labels ("Syncing…", "Syncing… <file>",
@@ -385,7 +387,8 @@
  * every settle). The `is-running`
  * class travels with the spin: added in enterSyncRunningState, removed
  * in settleSyncButton (every terminal + both idles pass through it).
- * The settle rendering ("Synced HH:MM" + the counts line), the Cancel
+ * The settle rendering ("Synced <stamp>" — the date-qualified stamp,
+ * phase 154 — + the counts line), the Cancel
  * control, the 409 double-trigger, the error banner/modal, and the
  * sync status API are all UNCHANGED.
  *
@@ -404,7 +407,8 @@
  *     writes
  *     the SAME untruncated full label through setSyncProgress, ONLY
  *     while running (the idle / settle button labels — "Sync sources",
- *     "Synced HH:MM" — must not fill the panel; they stay on the
+ *     "Synced <stamp>" (the date-qualified stamp, phase 154) — must
+ *     not fill the panel; they stay on the
  *     button, A2);
  *   • result mode — the settle paths write the result line through
  *     setSyncProgress: the counts line (fmtSyncResult — "N added ·
@@ -811,11 +815,40 @@ export async function mount(root) {
     }
   }
 
+  /* Phase 154 (task 01): the contract widens to the DATE-QUALIFIER
+   * (the phase design's A1 rule — owner-locked; the stamp is
+   * computed from the ISO's LOCAL calendar date, the page's clock —
+   * the table `Updated` columns already render local dates):
+   *   • same local calendar day as now → `HH:MM` (byte-identical to
+   *     the pre-phase output — a same-day badge is unchanged);
+   *   • same local year, different day → `M/D, h:MM AM/PM`
+   *     (e.g. `10/2, 3:14 PM`);
+   *   • different local year → `M/D/YYYY, h:MM AM/PM`
+   *     (e.g. `1/3/2025, 9:12 PM`).
+   * `h:MM` is the 12-hour form WITHOUT a leading zero on the hour
+   * (the `12:05 AM` edge), month/day without leading zero (the table
+   * dates' `M/D/YYYY` / `5:34:06 PM` family, the seconds dropped).
+   * The parse guard is UNCHANGED — an unparseable/missing ISO still
+   * yields "" (the bare "Synced" settle — e.g. the app-restart case,
+   * A12). */
   function fmtSyncTime(iso) {
     const d = new Date(iso);
     if (Number.isNaN(d.getTime())) return "";
+    const now = new Date();
     const pad = (n) => String(n).padStart(2, "0");
-    return `${pad(d.getHours())}:${pad(d.getMinutes())}`;
+    if (
+      d.getFullYear() === now.getFullYear() &&
+      d.getMonth() === now.getMonth() &&
+      d.getDate() === now.getDate()
+    )
+      return `${pad(d.getHours())}:${pad(d.getMinutes())}`;
+    const h12 = d.getHours() % 12 || 12;
+    const ampm = d.getHours() < 12 ? "AM" : "PM";
+    const date =
+      d.getFullYear() === now.getFullYear()
+        ? `${d.getMonth() + 1}/${d.getDate()}`
+        : `${d.getMonth() + 1}/${d.getDate()}/${d.getFullYear()}`;
+    return `${date}, ${h12}:${pad(d.getMinutes())} ${ampm}`;
   }
 
   /* Phase 128 (task 01) + Phase 129 (task 04) + Phase 152 (task 03):
@@ -861,7 +894,14 @@ export async function mount(root) {
    * live label (the title already carries it for hover); every
    * non-running call restores the ship value "Sync sources" (the
    * static HTML attribute is the idle truth — the JS only
-   * overwrites/restores it, never removes it). */
+   * overwrites/restores it, never removes it).
+   * Phase 154 (task 01): the settle badge among these label parts is
+   * date-qualified — `Synced <stamp>`, where `<stamp>` is produced
+   * by fmtSyncTime (its contract widened to the phase-154 A1 rule —
+   * same-day stays `HH:MM`, non-same-day carries the date; the rule
+   * is cited there, not restated). The parts themselves are
+   * UNCHANGED — the longer stamp is just more text in the same part
+   * (the label part ellipsizes as before). */
   function setSyncLabel(mainText, countText = "", chunkText = "", running = false, imageText = "") {
     if (syncLabelMain) syncLabelMain.textContent = mainText;
     if (syncLabelCount) {
@@ -1106,7 +1146,8 @@ export async function mount(root) {
     // the running state.
     syncBtn.classList.remove("is-running");
     // Phase 128 (task 01): the idle / settle labels ("Sync sources",
-    // "Synced HH:MM") go through the parts writer — count hidden
+    // "Synced <stamp>" — the date-qualified stamp, phase 154) go
+    // through the parts writer — count hidden
     // (absent), the label's full string rides the title (A4, as with
     // every label state). Phase 150 (task 02): the default
     // `running = false` leaves the detail box alone in every
@@ -1196,7 +1237,8 @@ export async function mount(root) {
     settleSyncButton(time ? `Synced ${time}` : "Synced");
     // Phase 150 (task 02): the settle's counts line IS the box's
     // result line (the sole live region) — the string builder is
-    // unchanged (A2: the "Synced HH:MM" label stays on the button).
+    // unchanged (A2: the "Synced <stamp>" label stays on the button;
+    // the stamp is date-qualified, phase 154).
     setSyncProgress(fmtSyncResult(status.detail));
     hideSyncError();
     emitSyncStatus(status);