Merge remote-tracking branch 'origin/release/v1.42.0' into v142/t1-server

# Conflicts:
#	docs/api/openapi.yaml
#	src/lib/ai/coach/stream-events.ts
#	src/lib/ai/coach/types.ts

src/__tests__/i18n-reverse-coverage.test.ts

@@ -79,7 +79,6 @@ const DYNAMIC_ALLOWLIST_PREFIXES = [
  */
 const RELEASE_PENDING_PREFIXES: Record<string, string> = {
   "labs.convertedFrom": "v1.42 lab unit conversion note (#1095)",
-  day: "v1.42 day view and its entry points (#613)",
   timeline: "v1.42 timeline and its readiness inventory (#613)",
   lifeEvents: "v1.42 life-event form and list (#613)",
 };