- Migrate issue-detail.tsx: useQuery for issue data, useUpdateIssue/useDeleteIssue
- Migrate issues-page.tsx, my-issues-page.tsx, board-card.tsx: useQuery for list
- Migrate batch-action-toolbar.tsx, create-issue.tsx: mutation hooks
- Migrate edge consumers: mention-suggestion, mention-view, agents page, issue-mention-card
- Remove Zustand writes from WS sync (TQ cache is now sole source of truth)
- Remove useIssueStore.fetch() dependency from workspace store
- Gut useIssueStore to client-only: { activeIssueId, setActiveIssue }
- Update test wrappers with QueryClientProvider
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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