Sleep Need bedtime notification parity #750

Context

While comparing NOOP with Goose docs and Goose RE assets from the official WHOOP app, I found that WHOOP has a dedicated Sleep Coach / Sleep Need bedtime push path.

RE evidence:

• SleepNeedPushNotification
• push type SleepCoachV2
• notification channel 02000_SleepCoach / Notifications.Channel.SleepCoach.Name = Bedtime
• analytics event: Sleep Coach, Send, Sleep Need, Push Notification

NOOP today

NOOP already has local sleep-adjacent behaviour:

• wind-down nudge (WindDownNudge)
• smart alarm / strap wake and phone mirror
• sleep need shown in metrics/UI

But I did not find an equivalent notification that explicitly mirrors WHOOP's Sleep Need bedtime recommendation push.

Proposal

Add an opt-in, local-only bedtime recommendation notification derived from NOOP's existing sleep-need / wake-time logic. This should stay honest about timing and data quality, similar to existing scheduled report copy.

Possible scope:

• off by default
• local notification only, no server push / FCM
• derived from configured wake time + estimated sleep need
• avoid firing if sleep need is unavailable or still calibrating
• make the copy clearly NOOP-owned, not WHOOP copied text

Question

Does this make sense for NOOP's notification model? If yes, I can open a PR for the local policy, settings toggle, and platform parity wiring.