Garmin health: fix display_name=None when using stored OAuth tokens.
authenticate_garmin() now calls login(tokenstore=...) instead of
garth.loads() directly, so display_name is populated and get_user_summary
works. Also add avg_hr_day / max_hr_day from stats response.
Routes: add merge endpoint (POST /{id}/merge/{source}), delete endpoint.
Routes page: polyline SVG mini-map on each route card, merge UI with
confirmation, activity rows are now Links to the activity detail page.
Personal records: replace all-columns unique constraint with a partial
index (unique on current records only) to stop UniqueViolation crashes
when parallel workers deactivate the same PR.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
owain
22b41109f5