Independent second-pass review found three gaps:
- focusedUsage is null | UsageStats, not Partial — ClientSessionState.usage
is the full type (app/types.ts) and its only write site seeds the four
required fields before merging (gateway-event.ts). The earlier Partial
annotation traced the wrong type (SessionRuntimeInfo, an RPC payload).
Comment now names the genuinely optional fields instead.
- The tile-focus contract test never seeded $sessionTiles/$sessionStates,
so it proved focusedStoredSessionId follows a tile but could not
distinguish focusedSessionId/focusedUsage working from broken. Seed a
bound runtime with distinct usage and assert both readout atoms move.
- The two public host.state references (website docs + bundled skill
reference) enumerated the old six atoms; plugin authors would never
discover the new ones. Both lists updated.
tsc/eslint/vitest green (4/4).
5fa092b481