Exposes the two platform-supported filter parameters on
RemoteAgentClient.fetch_inbound():
- peer_id: narrow inbound events to a specific peer workspace UUID
- before_ts: RFC3339 cutoff timestamp for historical backlog replay
Also marks the corresponding README limitation as resolved (was documented as
"does not expose peer_id or before_ts filters" — both are now wired up).
New tests:
- test_fetch_inbound_peer_id_filter
- test_fetch_inbound_before_ts_filter
- test_fetch_inbound_combined_filters
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>