chore(release): v1.29.0 — a daily health companion

The capstone of the daily-value milestone. On top of the Today view, the daily
loop (coach check-in, morning freshness, daily note) and the documents/coach
work already shipped, this completes the picture:
- ECG woven into the insights narrative (device-attributed only, never the
  app's own reading; a new recording surfaces gently in Today).
- Intraday heart rate as the shape of the day, with a careful elevated-at-rest
  tension note (never during activity, never a verdict).
- Calm milestones — states reached, not streaks to keep.
- The cohesion layer: the chosen health rings return to the Today hero, each
  surface carries its metric's calm colour identity, and a quiet reached-moment
  for a milestone — one design throughout.

No new data collected; every daily surface reads the overnight digest. No
migration in this release.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "healthlog",
-  "version": "1.28.56",
+  "version": "1.29.0",
   "description": "Self-hosted personal-health-tracking PWA with Withings integration, AI insights, and doctor-report PDF export.",
   "license": "PolyForm-Noncommercial-1.0.0",
   "homepage": "https://healthlog.dev",