AIDash API · multi-tenant
  POST /v1/auth/signup-request
  POST /v1/auth/verify
  POST /v1/auth/device-code         (Google device-code login)
  POST /v1/auth/poll                (Google device-code polling)
  GET  /v1/me
  POST /v1/pairing-sessions          (phone-issued, requires JWT)
  POST /v1/pairing-sessions/watch    (watch-issued, anonymous + nonce)
  GET  /v1/pairing-sessions/:code    (watch poll, anonymous + nonce)
  POST /v1/devices/pair              (phone consumes either flow)
  POST /v1/quota-snapshots
  GET  /v1/quota-snapshots/latest
  DELETE /v1/account
  GET  /v1/health