chore(release): v1.32.8 — carry write provenance on records made through the app

Bumps the version, regenerates the OpenAPI contract and the service-worker
version fallback, and records the release notes for the intake-source and
sync-trigger provenance surface plus the shared hhmm util and migration-number
guard.

docs/api/openapi.yaml

@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: HealthLog API
-  version: 1.32.7
+  version: 1.32.8
   description: >-
     Self-hosted personal-health-tracking PWA — public API surface for the iOS native client and external ingest.