Band Lineup 1.11.1: Sync replaces last week's hand-placed people

Sync only filled empty spots and spots it had filled itself, so anyone
dragged in by hand stayed forever — pressing Sync for a new week swapped
some photos and left others, depending on how each spot got filled.

Hand placements are now stamped with the plan they were made for. Sync
keeps the ones made for the plan it is loading (a sub dragged in this
week survives a re-sync) and replaces or clears the rest. The last
synced plan is saved so placements made after a restart stamp right.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

modules/band-lineup/server.js

@@ -247,7 +247,7 @@ module.exports = {
       return {
         configured: pco.configured, serviceTypeSet: Boolean(serviceTypeId),
         reachable: false, lastError: '', lastFetched: 0, columns,
-        plan: null,
+        plan: settings.lastPlan || null, // the last synced plan, so hand placements after a restart stamp right
         slots: effectiveSlots().map((label, index) => ({ index, label, person: null })),
         library: [], choir: choirOn,
       };
@@ -493,7 +493,8 @@ module.exports = {
         await syncPhotos(); // import the photo source (Drive folder or local path) on every sync
         if (pco.configured && serviceTypeId) {
         const plan = pickPlan(await listPlans(serviceTypeId));
-        latest.plan = plan ? { title: plan.title, dates: plan.dates } : null;
+        latest.plan = plan ? { id: String(plan.id), title: plan.title, dates: plan.dates } : null;
+        if (plan) { settings.lastPlan = latest.plan; saveSettings(); }
         if (!plan) { latest.reachable = true; latest.lastError = 'No plan found for that service type.'; }
         else {
 
@@ -521,12 +522,15 @@ module.exports = {
 
         const libEntries = Object.entries(library).map(([id, v]) => ({ id, name: v.name, file: v.file }));
 
-        // Slots a person is sitting in by hand — don't fill them, and don't place that same person twice.
+        // Slots a person was placed in by hand FOR THIS PLAN — don't fill them, and don't place that
+        // same person twice. A hand placement made for an earlier plan (last week's lineup, or one
+        // from before placements were stamped) is stale: Sync replaces it like any synced slot.
         const eff = effectiveSlots();
+        const planId = String(plan.id);
         const openIdx = []; const manualNames = new Set();
         for (let i = 0; i < eff.length; i += 1) {
           const e = board[String(i)];
-          if (e && (e.personId || e.name)) {
+          if (e && (e.personId || e.name) && e.plan === planId) {
             const nm = e.personId ? (library[e.personId] && library[e.personId].name) : e.name;
             if (nm) manualNames.add(normName(nm));
           } else openIdx.push(i);
@@ -540,8 +544,8 @@ module.exports = {
             const lib = bestLibraryMatch(m.name, libEntries); // folder photo wins over the PCO headshot
             const file = lib && lib.file ? lib.file : await cachePcoPhoto(m.personId, m.photoUrl);
             board[String(i)] = { pco: { name: m.name, file, birthday: m.birthday || '', personId: m.personId } };
-          } else if (board[String(i)] && board[String(i)].pco) {
-            delete board[String(i)]; // was synced, no longer on the plan
+          } else if (board[String(i)]) {
+            delete board[String(i)]; // synced or stale, and no longer on the plan
           }
         }
         saveBoard();
@@ -580,6 +584,7 @@ module.exports = {
     current = {
       streams, getLatest: () => latest, pco, listPlans, photoDir,
       library, board, saveLibrary, saveBoard, rebuildLocal, refresh: () => syncNow(), slots,
+      planId: () => (latest.plan && latest.plan.id) || '',
       photoUrlFor, libraryList,
       setChoir, choirOn: () => choirOn,
     };
@@ -684,7 +689,7 @@ module.exports = {
         const personId = String(q.get('personId') || '').trim();
         if (!/^\d+$/.test(slot)) return json(res, 400, { error: 'Bad slot.' });
         if (personId && !current.library[personId]) return json(res, 404, { error: 'No such library photo.' });
-        if (personId) current.board[slot] = { personId, name: '' };
+        if (personId) current.board[slot] = { personId, name: '', plan: current.planId() };
         else delete current.board[slot];
         current.saveBoard(); current.rebuildLocal();
         json(res, 200, { ok: true });
@@ -702,6 +707,7 @@ module.exports = {
         const name = String(q.get('name') || '').trim();
         const existing = current.board[index] || { personId: '', name: '' };
         existing.name = name;
+        existing.plan = current.planId();
         if (!existing.personId && !name) delete current.board[index];
         else current.board[index] = existing;
         current.saveBoard(); current.rebuildLocal();