HRV Watch: Readiness Score

This update makes HRV Watch clearer and more reliable: - HRV now surfaces the newest reading more clearly instead of confusing it with daily averages. - Dashboard, detail pages, Apple Watch app, and widgets now show HRV/RHR more clearly against personal normal ranges and baselines. - New mindful session summary on the dashboard: recent sessions, matched HRV value, and baseline-band assessment. - Mindful HRV detection is more robust, including HRV values written shortly after a mindful session. - After a mindful session, the app can send a push with the HRV value and assessment. - The morning push now reminds you to start a short mindful session for a more reliable HRV reading. - AI evaluations are no longer generated automatically; they run only when you tap the button. - HRV, RHR, Recovery Ratio, and Readiness charts are easier to read and less misleading.