Adds an Unread dropdown to the topbar utilities (before notifications), per docs/superpowers/plans/2026-07-17-topbar-unread-drawer.md.
- New partial `templates/partials/header/unread-drawer.tpl`: toggle with live `component="unread/count"` badge (core socket updates), server-rendered empty/footer rows.
- `public/client.js`: on dropdown open, fetches `GET /api/unread` and injects up to 10 topic rows (titles/categories via textContent only); fetch failure falls back to the empty state.
- Mobile burger drawer gets an Unread row with the same badge.
- SCSS: unread dropdown joins the shared dropdown width rule; flex row styles for topic items.
Deviations from the plan's example code, found by live verification against the dev forum:
- Plan's `api.get('/unread')` hits the v3 write API and 404s → replaced with a fetch of the `/api/unread` read route.
- NodeBB 4 has no global `window.require`, so runtime translation of the static `[[unread:...]]` strings never ran → those strings are now server-rendered in the template (also removes the plan's translate-over-innerHTML step, which would have re-parsed untrusted titles as HTML).
Verified: full plain-node test suite passes; Playwright against the dev container passed all checks (badge count, item ordering before notifications, dropdown topic links + navigation, /unread footer link, mobile drawer badge at 390px).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: #28
Co-authored-by: vickydotbat <vickydotbat@tutamail.com>
Co-committed-by: vickydotbat <vickydotbat@tutamail.com>
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