STATE-WP-0070: closeout — T03/T04/T05 done, status finished

Merge landed (df19c46), gate cleared, MCP restarted, suite green. Field-alias
+ flows/workstream.yaml retirement deferred to CUST-WP-0055 phase-3.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

workplans/STATE-WP-0070-workplan-terminology-phase2-retirement.md

@@ -4,13 +4,13 @@ type: workplan
 title: "Workplan terminology phase-2 legacy retirement"
 domain: infotech
 repo: state-hub
-status: active
+status: finished
 owner: codex
 topic_slug: custodian
 planning_priority: medium
 planning_order: 70
 created: "2026-07-09"
-updated: "2026-07-13"
+updated: "2026-07-14"
 state_hub_workstream_id: "9aa92529-6ee8-4b3f-b573-78b0ef8d9788"
 ---
 
@@ -112,7 +112,7 @@ snapshots, not 7 windows). Hold merge until the weekly-review sweep accrues the
 
 ```task
 id: STATE-WP-0070-T03
-status: progress
+status: done
 priority: medium
 state_hub_task_id: "e2b9015a-d157-4677-b700-165f1cf7e2af"
 ```
@@ -144,7 +144,7 @@ its zero windows are trustworthy — unmetered live usage would look like zero.
 
 ```task
 id: STATE-WP-0070-T04
-status: progress
+status: done
 priority: low
 state_hub_task_id: "18af98bf-c74e-47c8-948a-e713cff88bb8"
 ```
@@ -186,7 +186,7 @@ tested. Merge gate same as T03: 7th documented zero-usage window.
 
 ```task
 id: STATE-WP-0070-T05
-status: todo
+status: done
 priority: medium
 state_hub_task_id: "dcc81665-ef84-4c0a-a88f-d8afc0d1bbb9"
 ```
@@ -195,4 +195,21 @@ Re-run `scan_workstream_terminology.py`, grep budget check, full test suite,
 archive this workplan, notify CUST-WP-0055 fleet gate complete.
 
 Done when legacy-meter weekly review shows no active legacy REST keys and MCP
-aliases are removed or marked retired.
+aliases are removed or marked retired.
+
+**Closeout 2026-07-14 (merged `df19c46`):** Gate cleared — 10 consecutive 8h
+zero-usage windows (07-10 14:00 → 07-13 22:00), all 19 legacy interfaces at 0.
+Branch `state-wp-0070-legacy-retirement` merged to `main`; :8001 dev-hub MCP
+restarted (removed tools de-registered); full suite green (495 passed). T03
+(MCP aliases + resource) and the open_workstreams mirror (T04) are removed.
+
+**Deferred to a phase-3 followup (handed to CUST-WP-0055 fleet gate):** two T04
+sub-items still have live fleet callers and were intentionally NOT removed:
+1. `workstream_id` query/body field alias on preferred routes (`/tasks`,
+   `/decisions`, `/progress`, `/execution`, `/token-events`) — external
+   session-close curls and scripts still send it; scan shows ~4.1k `api:workstream_id`
+   occurrences fleet-wide. Retire after briefs/scripts refresh and the meter key
+   holds 7 zero windows.
+2. `flows/workstream.yaml` — the `/flows/workstream/{id}` routes are still served
+   and tested. Retire when no callers remain.
+Backlog: `docs/workplan-terminology-legacy-retirement-backlog.md` (phase-3 rows).