## Summary
A Support inbox drawer on the topbar, next to the notification bell, fed by
the plugin-owned support inbox in sow-nodebb-plugin-support#15.
It is not a lookalike: the rows are rendered with core's own
`partials/notifications_list` partial, from entries the support plugin now
returns in core's notification field names, inside a dropdown that copies
Harmony's `partials/sidebar/notifications.tpl`. So the drawer has the
notification drawer's avatar block, stretched link, muted timeago, per-entry
read dot, All/Unread filter row, and the same two footer buttons — and needs
no CSS of its own, because it reuses the `.notifications-dropdown` classes
this theme already styles.
Behaviour matches the bell too: opening the box does not mark anything read;
an entry is read when you click it or use "Mark all read", and the dot toggles
both ways. Only the API paths differ, because the list is plugin-owned (core's
unread count is one aggregate with no hook to carve one type out of it).
Every string is a translation key.
## Test plan
- [x] `for f in tests/*.test.js; do node "$f"; done` — all pass, including the
updated topbar contract test
- [x] Live against a dev NodeBB as a `support:viewall` holder: badge count 4,
four rows, per-entry read dot drops the badge to 3, Unread filter hides
the read row, "Mark all read" clears every dot and hides the badge,
empty state reads "Nothing new" — no console errors
- [x] Screenshotted side by side with the real notifications dropdown; the two
are structurally identical
Depends on sow-nodebb-plugin-support#15 for the endpoints.
Generated with Claude CodeReviewed-on: #45
Co-authored-by: vickydotbat <vickydotbat@tutamail.com>