fix(calendar-sync): hook date off-by-one + back-catalog + structure guard (FM-CAL-SYNC-HOTFIX)

.github/workflows/check-descriptor.yml

@@ -29,5 +29,12 @@ jobs:
       - name: Validate chronicle-package.json
         run: node tools/check-package-descriptor.mjs
 
-      - name: Test update-info classifier helpers
-        run: node --test tools/test-update-info.mjs
+      # Full off-DOM test suite (B-R8). The glob is UNQUOTED so the bash shell
+      # expands tools/test-*.mjs to explicit file args — Node's own glob for
+      # --test only landed in Node 21+, and this workflow pins Node 20, so a
+      # quoted glob reaches Node literally and "cannot be found". The bare
+      # directory form (`node --test tools/`) also errors on Node 20. Shell
+      # expansion works on every Node version. This supersedes the old
+      # single-file test-update-info step.
+      - name: Run test suite
+        run: node --test tools/test-*.mjs

scripts/_overview-model.mjs

@@ -44,6 +44,7 @@ export function buildOverviewModel(p = {}) {
     unmatchedMembers = 0,
     calendarAvailable = false,
     calendarInSync = false,
+    calendarSyncPaused = false,
     errorCount = 0,
     matchedSystem = null,
     lastSyncTime = 'Never',
@@ -94,7 +95,16 @@ export function buildOverviewModel(p = {}) {
       tab: 'members',
     });
   }
-  if (calendarAvailable && !calendarInSync) {
+  if (calendarAvailable && calendarSyncPaused) {
+    // Structure mismatch (B-R2): a hard pause, not a mere date drift — flag it
+    // as an error so it sorts above ordinary warnings.
+    attention.push({
+      severity: 'error',
+      icon: 'fa-calendar-xmark',
+      text: 'Calendar sync paused — Foundry and Chronicle calendars have different structures.',
+      tab: 'calendar',
+    });
+  } else if (calendarAvailable && !calendarInSync) {
     attention.push({
       severity: 'warn',
       icon: 'fa-calendar-xmark',