Frontend load test in CI, health page checks Seafile, OnlyOffice, audiobooks, podcasts and Mealie; roadmap updated

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

.gitea/workflows/build.yml

@@ -18,6 +18,7 @@ jobs:
           node-version: 22
       - run: npm ci
       - run: npm audit --omit=dev --audit-level=high
+      - run: node tools/frontend-test.js # every page script loads (no syntax errors, no names declared twice)
       - run: node tools/smoke-test.js
       - run: node tools/tasks-test.js    # repeating tasks and subtasks
       - run: node tools/push-test.js     # reminders: when they are sent, never twice