chore(release): v1.18.10

Fix encrypted day-log data loss and the stalled cumulative-measurement drain;
capture Withings sleep vitals and Oura VO2max; harden AI grounding across the
briefing, Coach, narrative, and status cards; full-page Coach with history and a
working mic; on-device lab OCR; preventive-care, labs, and settings polish; BP
warm/cold parity, a statement timeout, and a covering measurements index.

docs/api/openapi.yaml

@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: HealthLog API
-  version: 1.18.9
+  version: 1.18.10
   description: >-
     Self-hosted personal-health-tracking PWA — public API surface for the iOS native client and external ingest.