Reconcile inbox sidebar badge with toolbar headline

[rafaeelaudibert]

Summary

The badge next to Inbox in the sidebar and the Reports (N) headline inside the inbox view counted different things, so the numbers routinely disagreed:

• Sidebar badge — reports assigned to you, status=ready, actionability=immediately_actionable (i.e. things you need to action right now).
• Toolbar "Reports (N)" — the server's raw total for whatever filters the user has applied (a much wider number).

This PR makes them agree by construction and adds tooltips so the meaning is discoverable.

• Extract a shared useUpForReviewCount hook (apps/code/src/renderer/features/inbox/hooks/useInboxReports.ts). The sidebar badge and the toolbar headline both call it; React Query dedupes the underlying fetch so the two numbers cannot diverge.
• Rename the toolbar headline from Reports (N) to Up for review (N) so the semantics match the badge by construction. Tooltip: "Reports assigned to you that are ready and immediately actionable."
• Move the raw inbox total to a clearer sub-line: "N reports in inbox · M still processing" (or "X of Y match search" when searching), with its own tooltip: "All reports currently in your inbox view, after any status, source, or reviewer filters you have applied."
• Drop the now-redundant readyCount from the old pipeline-hint sub-line and from SignalsToolbar's prop surface. InboxSignalsTab still computes it locally for the INBOX_VIEWED analytics event.

Test plan

• Open the inbox with reports across several statuses; confirm sidebar badge value equals the toolbar Up for review (N) headline.
• Hover the headline and sub-line — verify both tooltips render the explanatory copy.
• Apply a status / source / reviewer filter; Up for review stays the same; the sub-line reflects the filtered total.
• Type a search query; sub-line switches to "X of Y match search"; headline unchanged.
• Pipeline-paused state still appears in the sub-line.
• Warming-up state (no reports yet) renders without errors.

[greptile-apps]

Prompt To Fix All With AI

Fix the following 1 code review issue. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 1
apps/code/src/renderer/features/inbox/components/list/SignalsToolbar.tsx:109-110
When `isSearchActive` is `true` the sub-line reads `"X of Y match search"` (or `"X of Y match search · Pipeline paused…"`), but `INBOX_TOTAL_TOOLTIP` still says *"…after any status, source, or reviewer filters you have applied"* — search is neither of those. A user hovering the sub-line during an active search gets tooltip copy that doesn't match what the numbers represent.

```suggestion
const INBOX_TOTAL_TOOLTIP =
  "All reports currently in your inbox view, after any search, status, source, or reviewer filters you have applied.";
```

_{Reviews (1): Last reviewed commit: "Reconcile inbox sidebar badge with toolb..." | Re-trigger Greptile}