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HealthLog/messages
Marc-André BombeckandClaude Opus 4.7 195448ae19 feat(coach): drawer shell, message thread, source chips
Lays the visual scaffold for the AI Coach drawer (B2b):

- `<CoachDrawer>` wraps `<Sheet side="right">` and exposes the
  three-column layout from the artboard (history rail · message
  thread · sources rail) on `lg+`. Mobile (<lg) collapses to a
  single column with the message thread in focus and the rails
  hidden — they get reachable via tray menus in v1.4.21.
  History / sources / composer are slot props so the parent wires
  them in commit 3 without coupling them to the shell.
- `<MessageThread>` renders user / assistant bubbles, supports an
  in-flight streaming bubble fed by `useSendCoachMessage()`, and
  preserves a "user-pinned-to-bottom" auto-scroll heuristic so
  reading earlier turns doesn't yank the viewport when a new token
  lands.
- `<SourceChips>` renders the labels-only provenance envelope —
  metric + window + n-count, no raw values — matching the wire
  contract from B2a.
- i18n keys land under `insights.coach.*` for tagline, new chat,
  composer placeholder, history rail, sources rail, metric labels,
  and window labels. Both locales updated.

Drawer state (open / prefill) is consumed via a controlled prop +
lazy `useState` initialiser; the close path resets thread + composer
in the `onOpenChange` handler so we don't trip
`react-hooks/set-state-in-effect`.

Tests cover: source-chip render permutations (8), message-thread
empty / persisted / streaming / error states (8), provenance
locale-aware labels.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-10 16:25:34 +02:00
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