chore(integration): fix lint warnings (react-hooks/exhaustive-deps, react/no-unescaped-entities, unused-vars)

Leftover lint cleanups to make 'npm run lint' pass on the integrated branch:
- calendar/page.tsx: add eslint-disable for mount-only useEffect blocks
- import/route.ts: replace destructure-and-ignore with renames (_id, _created, _updated)
- settings-agents.tsx: escape apostrophe in JSX text

apps/web/app/api/import/route.ts

@@ -60,8 +60,7 @@ export const POST = withAuth(async (request: NextRequest, _user) => {
     for (const item of items) {
       try {
         // Strip id, created, updated to let PocketBase generate new ones
-        // eslint-disable-next-line @typescript-eslint/no-unused-vars
-        const { id, created, updated, ...data } = item;
+        const { id: _id, created: _created, updated: _updated, ...data } = item;
         await pb.collection(collection).create(data);
         result.imported++;
       } catch (error) {