feat: integrate shared-links into Calendar, Contacts, and ManaCore

Add @manacore/shared-links to Calendar, Contacts, and ManaCore apps.
Link store initializes alongside tag store in each app's layout, syncs
when authenticated, and is ready for cross-app linking.

Also fix broken workspace references in moodlit (shared-feedback-service
→ feedback, shared-feedback-ui removed, shared-subscription-ui →
subscriptions).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/calendar/apps/web/package.json

@@ -43,6 +43,7 @@
 	},
 	"dependencies": {
 		"@calendar/shared": "workspace:*",
+		"@manacore/shared-links": "workspace:*",
 		"@manacore/shared-api-client": "workspace:*",
 		"@manacore/shared-app-onboarding": "workspace:*",
 		"@manacore/shared-auth": "workspace:*",

apps/calendar/apps/web/src/routes/(app)/+layout.svelte

@@ -29,6 +29,7 @@
 		tagMutations,
 		useAllTags as useAllSharedTags,
 	} from '@manacore/shared-stores';
+	import { linkLocalStore, linkMutations } from '@manacore/shared-links';
 	import { useAllCalendars, useAllEvents, getDefaultCalendar } from '$lib/data/queries';
 	import { settingsStore } from '$lib/stores/settings.svelte';
 	import { birthdaysStore } from '$lib/stores/birthdays.svelte';
@@ -449,7 +450,11 @@
 
 	async function handleAuthReady() {
 		// Initialize local-first databases (opens IndexedDB, seeds guest data)
-		await Promise.all([calendarStore.initialize(), tagLocalStore.initialize()]);
+		await Promise.all([
+			calendarStore.initialize(),
+			tagLocalStore.initialize(),
+			linkLocalStore.initialize(),
+		]);
 
 		// Initialize split-panel from URL/localStorage
 		splitPanel.initialize();
@@ -464,6 +469,7 @@
 			const getToken = () => authStore.getValidToken();
 			calendarStore.startSync(getToken);
 			tagMutations.startSync(getToken);
+			linkMutations.startSync(getToken);
 
 			// Load user settings (requires auth)
 			await userSettings.load();