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Marc-André Bombeck
fb17a4e9c6
Add the transport that reads a user's device data from the Google Health API (health.googleapis.com/v4): Google OAuth with PKCE and offline access, the paginated dataPoints reader with a daily-rollup fallback for the types that lack a list method, the metric/activity/sleep/workout mappers onto the shared measurement shape, and a response classifier that separates retryable errors, hard rejects, and the re-consent case. Access tokens live an hour and refresh tokens are reused, not rotated. A refresh that comes back invalid_grant raises a distinct reauth-required signal so the app can prompt a fresh consent rather than fail silently — the periodic re-consent a Testing-mode Google client needs. The four core readonly scopes ship by default; the Pixel Watch ECG and irregular-rhythm scopes stay behind an opt-in flag. Only the transport is new: the mapped-measurement output, the upsert/dedup/rollup tail, and the source ladders are the shared ones.