Moves gateway routing metadata (display_name, origin_json, expiry_finalized)
into state.db, making SQLite the single source of truth for gateway session
discovery. Eliminates the dual-file (sessions.json + state.db) polling
dependency that caused the mcp_serve new-conversation race (#8925).
- hermes_state.py: schema v18 (3 new sessions columns + sessions.json
backfill migration), record_gateway_session_peer gains
display_name/origin_json, new set_expiry_finalized(),
list_gateway_sessions(), find_session_by_origin()
- gateway/session.py: peer recorder persists display_name + full origin
JSON; new SessionStore.set_expiry_finalized() single write-path
- gateway/run.py: expiry watcher success + give-up paths use the store
helper so the flag lands in both sessions.json and state.db
- mcp_serve.py: routing index reads state.db first (sessions.json fallback
for pre-migration DBs); _poll_once collapses to a single state.db mtime
check — the #8925 race is structurally impossible now
- gateway/mirror.py, gateway/channel_directory.py, hermes_cli/status.py:
query state.db first, sessions.json fallback
Closes#9006
Teknium
747386ecfa