watchHistory.fetch now reads via the L1 SubscriptionManager (deduped +
health-gated) instead of pool.list directly: a new getSubscriptionManager dep
is threaded from the client, and both fetches (index + chunks) go through a
listEvents() helper. Raw pool.list is retained only as a fallback for
environments without a manager (tests/mocks), so the file stays grandfathered.
Verified: watch-history unit test passes; wh-repro cold resolve returns 10
items with 2 decrypts (routing intact end-to-end).
Co-Authored-By: Claude Opus 4.8 <[email protected]>
