docs(STATE-WP-0079): propose retirement strangler and disposition

Parent prj-state-hub-retirement SHR-WP-0001 stream S4.

workplans/STATE-WP-0079-retirement-strangler.md

@@ -0,0 +1,106 @@
+---
+id: STATE-WP-0079
+type: workplan
+title: "State Hub retirement strangler and disposition execution"
+domain: infotech
+repo: state-hub
+status: proposed
+owner: codex
+topic_slug: infotech
+created: "2026-08-09"
+updated: "2026-08-09"
+parent_project: prj-state-hub-retirement
+parent_workplan: SHR-WP-0001
+related:
+  - STATE-WP-0074
+  - SHR-INV-0001
+  - RMGR-WP-0001
+  - HUB-WP-0004
+---
+
+# State Hub retirement strangler and disposition execution
+
+## Goal
+
+Execute the **keep/move/replace/retire** dispositions from
+`prj-state-hub-retirement/inventory` via strangler adapters and owner handoffs,
+without adding new permanent authorities here. End state: freeze window with no
+normal traffic, then archive.
+
+## Freeze policy for new scope
+
+```task
+id: STATE-WP-0079-T01
+status: todo
+priority: high
+```
+
+Document and enforce: changes during retirement must preserve compatibility,
+enable extraction, reduce scope, or fix operational risk — not establish new
+permanent ownership (INTENT retirement status).
+
+## Capability strangler plan
+
+```task
+id: STATE-WP-0079-T02
+status: todo
+priority: high
+```
+
+Group SHR-INV-0001 items into cutover slices (repo/work → repo-manager;
+messages/progress/projections → hub-core; catalogs → owners; retire aliases).
+Per slice: adapter flag, owner API, rollback.
+
+## Register CLI and GOAL.md support
+
+```task
+id: STATE-WP-0079-T03
+status: todo
+priority: medium
+```
+
+Adapt `statehub register` / scaffolding so `prj-` repos with `GOAL.md` and
+`repo_flavor: project` are valid without inventing durable-product `INTENT.md`
+(residual from SHR-WP-0001-T01).
+
+## Execute move/replace slices
+
+```task
+id: STATE-WP-0079-T04
+status: todo
+priority: high
+```
+
+Implement strangler handoffs coordinated with RMGR-WP-0001 and HUB-WP-0004.
+Compatibility tests for each dispositioned route family.
+
+## Retire legacy surfaces
+
+```task
+id: STATE-WP-0079-T05
+status: todo
+priority: medium
+```
+
+Complete retirement of suggestions, workstream aliases, and other `retire`
+inventory items once meters/callers allow. Keep historical rows archive-readable.
+
+## Stabilization window and archive prep
+
+```task
+id: STATE-WP-0079-T06
+status: todo
+priority: high
+```
+
+With T06 gates: zero normal read/write window, final dump, backup/restore
+evidence, stop service, archive repo read-only. Residuals → live owners.
+
+## Acceptance
+
+- [ ] Freeze policy documented
+- [ ] Strangler plan covers all inventory capabilities
+- [ ] prj-/GOAL.md register path works
+- [ ] Move/replace slices evidenced with tests/counts
+- [ ] Retire list closed or residual-owned
+- [ ] Stabilization + archive prep ready for project retirement