Harden reconciliation conflict handling

workplans/STATE-WP-0048-ui-state-change-reconciliation.md

@@ -4,7 +4,7 @@ type: workplan
 title: "UI State Change Reconciliation"
 domain: custodian
 repo: state-hub
-status: active
+status: finished
 owner: codex
 topic_slug: custodian
 planning_priority: high
@@ -159,7 +159,7 @@ human-confirmation cases.
 
 ```task
 id: STATE-WP-0048-T06
-status: todo
+status: done
 priority: high
 state_hub_task_id: "b1769ce0-de21-4faf-9db4-75ebc8506044"
 ```
@@ -170,11 +170,16 @@ missing, the workplan is archived, or the State Hub host path is unavailable.
 Done when reconciliation failures produce clear, actionable records instead of
 partially applied state.
 
+Result 2026-05-23: apply-mode reconciliation now blocks stale UI requests,
+repo file/cache drift, missing host-path access, and failed file patch attempts
+before DB mutation. These cases create reconciliation messages with actionable
+reasons and return `conflict: true` for dashboard display.
+
 ## T07 - Tests And Consistency Integration
 
 ```task
 id: STATE-WP-0048-T07
-status: todo
+status: done
 priority: high
 state_hub_task_id: "7d7e36e8-783d-494f-9691-5213e35c7539"
 ```
@@ -191,6 +196,12 @@ Progress 2026-05-23: routed dashboard status controls through the
 reconciliation API so UI-originated changes exercise the same write-through and
 deferred-record path as API clients.
 
+Result 2026-05-23: added API coverage for stale expected status, workplan
+file/cache drift, and unavailable host paths. Added a dependency-free dashboard
+component test that verifies status controls post the reconciliation contract,
+include `expected_current_status`, keep local state on conflicts, and surface
+`out of sync` to the user.
+
 ## Acceptance Criteria
 
 - Dashboard state changes never create silent DB/file divergence.