Retire GET /workstreams/workplan-index with 410; railiance01 deploy runbook

Return 410 Gone for legacy workplan-index route (replacement /workplans/index).
Add tests, update transition backlog, operator deploy evidence doc, and
STATE-WP-0070 progress notes.

docs/evidence/railiance01-state-hub-deploy-20260709.md

@@ -0,0 +1,51 @@
+# railiance01 State Hub deploy — workstream caller migration
+
+Date: 2026-07-09  
+Workplan: STATE-WP-0070 T01  
+Blocked: `git pull` on railiance01 failed with `.git/FETCH_HEAD` permission denied.
+
+## Why
+
+Legacy-meter shows ~150k weekly `GET /workstreams/*` calls. Local migrations
+(≥ `b05ca2c`) moved fix-consistency and activity-core to `/workplans/`. The
+railiance01 sweep host was still at `050cbbc` when checked via SSH.
+
+## Target revisions
+
+| Repo | Minimum commit | Notes |
+| --- | --- | --- |
+| `state-hub` | `7e68f9e` | Caller migrations + identity headers + workplan-index 410 |
+| `activity-core` | `5a92923` | `/workplans` resolver + progress `workplan_id` only |
+
+## Steps (operator on railiance01)
+
+```bash
+# 1. Fix checkout permissions if needed (example — adjust user/group)
+sudo chown -R "$(whoami):$(id -gn)" ~/state-hub/.git ~/activity-core/.git
+
+# 2. Pull both repos
+cd ~/state-hub && git fetch origin main && git pull --ff-only origin main
+git log -1 --oneline   # expect 7e68f9e or newer
+
+cd ~/activity-core && git fetch origin main && git pull --ff-only origin main
+git log -1 --oneline   # expect 5a92923 or newer
+
+# 3. Optional: one-shot consistency sweep against workstation hub via tunnel
+#    (API must reach the hub — typically http://127.0.0.1:8000 through ops-bridge)
+statehub fix-consistency --all --remote --api-base http://127.0.0.1:8000
+
+# 4. Verify legacy-meter attribution (from any host with hub API access)
+python ~/state-hub/scripts/capture_legacy_meter_evidence.py --days 7
+# Expect component bucket state-hub.fix-consistency; declining GET /workstreams/*
+```
+
+## Verification checklist
+
+- [ ] `state-hub` and `activity-core` at target commits on railiance01
+- [ ] Consistency sweep completes without C-00 automation errors
+- [ ] Weekly legacy-meter review shows `state-hub.fix-consistency` (not only `unknown`)
+- [ ] `GET /workstreams/*` 7-day window counts trend down week-over-week
+
+## Rollback
+
+`git checkout <previous-sha>` in each repo; no schema migration involved.