feat: TypeScript Snoo client (pysnoo2 rewrite)

[ng]

Context

Rewrite pysnoo2 (Python) as a TypeScript module for sleepypod-core. This is the foundational piece for Sleepypod Mini.

Scope

Auth

• OAuth PKCE flow to Happiest Baby API
• Token refresh and persistence
• Derive PubNub UUIDs and JWT tokens from auth session

Data API (REST)

• Get device status
• Get session history (sleep sessions with timestamps, duration, soothe levels)
• Get baby profile
• Get device settings (lock, weaning mode, sound settings)

Control API (PubNub)

• Subscribe to device state channel (real-time: baby state, motion level, soothe events)
• Publish commands: start/stop, set soothe level (1-4), lock/unlock
• Handle connection lifecycle (reconnect, token refresh)

Reference

• pysnoo2 source: https://github.com/DanPatten/pysnoo2
• Key files: pysnoo2/snoo.py (auth), pysnoo2/pubnub.py (control)
• Harshit's SSL pinning bypass blog for API docs

Output

• src/services/mini/client.ts — Snoo API client
• src/services/mini/pubnub.ts — PubNub subscription manager
• src/services/mini/types.ts — TypeScript types for Snoo data model

Parent

Epic: #405