fix broken chore gone

frontend/src/routes/[fam]/[username]/+page.svelte

@@ -917,30 +917,23 @@
 			}
 		} catch (e) {
 			// A stale assigned ID (parent re-saved chores while this tab was
-			// open in the background) leaves the chore untogglable — refresh
-			// the store so the UI self-heals instead of staying stuck.
-			try {
-				await famStore.init(famId);
-			} catch {}
-			if (wasCompleted) {
-				famStore.applyRecord(
-					'completions',
-					{
-						id: 'revert-' + chore.id + '-' + Date.now(),
-						famId,
-						memberId,
-						assignedChoreId: chore.id,
-						date: todayChild,
-						completedAt: new Date().toISOString()
-					} as Completion,
-					'create'
-				);
-			} else {
-				const optimistic = completions.find((c) => c.id === 'optimistic-' + chore.id);
-				if (optimistic) {
-					famStore.applyRecord('completions', optimistic, 'delete');
-				}
+			// open in the background) leaves the chore untogglable. init() is
+			// a no-op when already initialized, so force a resync() to drop
+			// the dead card. Never re-add completions for the gone chore —
+			// that is what kept the error reoccurring after "refresh".
+			const optimistic = completions.find((c) => c.id === 'optimistic-' + chore.id);
+			if (optimistic) {
+				famStore.applyRecord('completions', optimistic, 'delete');
 			}
+			try {
+				await famStore.resync();
+			} catch {}
+			const msg = e instanceof Error ? e.message : String(e);
+			showToast(
+				/CHORE_GONE/.test(msg)
+					? 'This chore was changed — list refreshed.'
+					: 'Toggle failed — please try again.'
+			);
 			console.error('Toggle failed:', e);
 		} finally {
 			const next = new Set(togglingIds);