Credit payments instantly from the watcher push (no REST on critical path)

The watcher push now carries the tx data (matched outputs + confirmed flag), so
the app credits an incoming payment the moment the push arrives — no mempool.space
round-trip. This removes the rate-limited REST reconcile from the path a user
actually waits on, and lets us back the frontier poll way off when the socket is
live (30s backstop vs the old 3s receive-tab hammer), cutting the 429s to a
trickle.

- watcher: notification includes { txid, confirmed, outputs:[{vout,value}] }.
- wallet: _applyTxNotification credits the receive coin + a pending history row
  optimistically (receives only; change reconciles in the background), advances
  the frontier, updates the balance, and schedules a background reconcile for
  full accuracy off the critical path.
- poll intervals relaxed now that the WS does the real work instantly.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

0 files changed, 0 insertions, 0 deletions