fix(chat): scope new-chat dashboard to familiar

[BunsDev]

Summary

• scope New Chat Recent threads to the selected familiar through the shared visible-session filter
• scope Board and Needs-you open work before deriving counts, caps, links, and empty states
• preserve familiar ownership in the lean dashboard-card projection and pin exact-match behavior

Why

The New Chat dashboard consumed workspace-wide session, board, and inbox data, so selecting one familiar could surface another familiar’s chats or work.

Verification

• node --experimental-strip-types src/components/home/dashboard-open-work.test.ts
• node --experimental-strip-types src/components/chat-new-dashboard.test.ts
• node --experimental-strip-types src/lib/chat-open-tasks.test.ts
• pnpm check:tests-wired
• pnpm typecheck
• pnpm lint
• pnpm test:app — 908 test files passed
• git diff --check

An initial full-suite run hit the documented load-sensitive vault-ref-cold-start race; that test passed in isolation and the complete rerun passed.

Tracking: cave-hxum1

[Copilot]

Pull request overview

Scopes the New Chat dashboard’s “Recent threads” and “Open work” to the currently selected familiar, preventing cross-familiar leakage of sessions, board cards, and inbox items.

Changes:

• Apply familiar scoping before deriving Open Work rows/counts/caps/empty states (Board + Needs-you).
• Use the shared filterVisibleChatSessions visibility contract when deriving Recent threads for the selected familiar.
• Preserve familiarId in the lean /api/board dashboard-card projection and pin this behavior with tests.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/chat-boot-landing.spec.ts	Updates fixture to ensure landing only surfaces familiar-owned work.
src/components/home/use-dashboard-board.ts	Extends DashboardCard to retain familiarId from the Board API response.
src/components/home/dashboard-open-work.ts	Adds filterFamiliarOwned helper to scope work items to a familiar.
src/components/home/dashboard-open-work.test.ts	Adds unit coverage for exact-match familiar ownership filtering.
src/components/chat-new-dashboard.tsx	Scopes board/inbox open work + recent threads to the selected familiar.
src/components/chat-new-dashboard.test.ts	Adds contract-style assertions to prevent regressing familiar scoping and ownership retention.

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