fix(agent-status): collapse the entry facets into one intersection

The previous attempt still tripped max-lines: two mixins on one intersection wrap
across two lines under oxfmt, so removing the field line bought nothing.

Expose a single AgentStatusRowFacets that already includes the observation facet, so
the entry intersects one short name on one line. The payload keeps intersecting the
observation facet alone — it must not carry the renderer-local ordinal.

Verified by formatting first and then linting, which is the order that catches this.

src/shared/agent-status-observation.ts

@@ -71,7 +71,7 @@ export type WithAgentStatusObservation = { observation?: AgentStatusObservation
  *
  *  Declared here beside the observation facet because both are per-write facets mixed into
  *  `AgentStatusEntry` rather than fields a reporter supplies. */
-export type WithAcceptedStatusSeq = { acceptedStatusSeq?: number }
+export type AgentStatusRowFacets = WithAgentStatusObservation & { acceptedStatusSeq?: number }
 
 // ─── THE ORDERING RULE ──────────────────────────────────────────────────────
 // `(authorityId, incarnation, revision)` is a total order ONLY within one authorityId.

src/shared/agent-status-types.ts

@@ -3,7 +3,7 @@
 // a narrow interrupt fallback synthesizes a final `done` when an agent misses its cancellation hook.
 
 import type { AgentProviderSessionMetadata } from './agent-session-resume'
-import type { WithAcceptedStatusSeq, WithAgentStatusObservation } from './agent-status-observation'
+import type { AgentStatusRowFacets, WithAgentStatusObservation } from './agent-status-observation'
 import {
   normalizeInteractivePromptField,
   normalizeOptionalField,
@@ -152,8 +152,7 @@ export type AgentStatusEntry = {
    *  the transition may have been missed while no receiver was up, so freshness gates
    *  treat the row as stale immediately. Cleared by any accepted live event. */
   restoredUnconfirmed?: boolean
-} & WithAgentStatusObservation &
-  WithAcceptedStatusSeq
+} & AgentStatusRowFacets
 
 export type MigrationUnsupportedPtyEntry = {
   ptyId: string