docs(ecosystem): boundary alignment and route audit (STATE-WP-0074)

Add ecosystem position to INTENT/SCOPE/README, publish hub-ecosystem-route-audit,
update workstream-coordinate capability relations, and record legacy-meter
weekly review evidence.

workplans/STATE-WP-0074-hub-ecosystem-boundary-alignment.md

@@ -0,0 +1,92 @@
+---
+id: STATE-WP-0074
+type: workplan
+title: "Hub ecosystem boundary alignment"
+domain: infotech
+repo: state-hub
+status: finished
+owner: codex
+topic_slug: infotech
+created: "2026-07-09"
+updated: "2026-07-11"
+state_hub_workstream_id: "7bddf82c-82bc-4abe-8060-046c62eefc23"
+---
+
+# Hub ecosystem boundary alignment
+
+Parent: `~/the-custodian/workplans/CUST-WP-0057-hub-ecosystem-consolidation.md`
+
+## Goal
+
+Document State Hub's role in the three-repo stack and prevent route/model drift
+toward core-hub framework surfaces.
+
+## Route audit
+
+```task
+id: STATE-WP-0074-T01
+status: done
+priority: high
+state_hub_task_id: "4e028511-b1ec-472e-a34d-e0701c3281c2"
+```
+
+Publish `docs/hub-ecosystem-route-audit.md` classifying hub-core factory vs
+dev-hub-only vs core-hub-exclusive routes.
+
+Done 2026-07-09.
+
+## Cross-hub read API decision
+
+```task
+id: STATE-WP-0074-T02
+status: done
+priority: medium
+state_hub_task_id: "609fa167-e3e0-486f-8c10-9d65c419ada0"
+```
+
+Record deferral: core-hub does not duplicate progress/message tables in
+CUST-WP-0057 initial slice. Future ingestion via authenticated read APIs if
+operator console needs live dev coordination data.
+
+Decision documented in route audit and `hub-ecosystem-architecture.md`.
+
+## Ecosystem docs in INTENT/SCOPE
+
+```task
+id: STATE-WP-0074-T03
+status: done
+priority: high
+state_hub_task_id: "4f2bbf15-bb0f-4224-b619-04db33a8fbab"
+```
+
+Add ecosystem position sections to `INTENT.md` and `SCOPE.md`.
+
+Done 2026-07-09.
+
+## Confirm no /api/v2 growth
+
+```task
+id: STATE-WP-0074-T04
+status: done
+priority: high
+state_hub_task_id: "a9c26e95-b5cb-4cda-9fd7-050dd195794c"
+```
+
+Verify `api/main.py` does not mount Inter-Hub `/api/v2` routes. Document in
+route audit.
+
+Done 2026-07-09: no `/api/v2` in state-hub.
+
+## Cross-repo smoke documentation
+
+```task
+id: STATE-WP-0074-T05
+status: done
+priority: medium
+state_hub_task_id: "047805fa-2302-4ad3-b2be-c2b0a48454df"
+```
+
+Add `make ecosystem-regression` target or README pointer to
+`the-custodian/scripts/hub-ecosystem-regression.sh`.
+
+Done 2026-07-09: README glossary and regression script pointer added.