Update stabilization checkpoint after app contract

workplans/CUST-WP-0051-infrastructure-stabilization-metaplan.md

@@ -281,8 +281,22 @@ Progress 2026-06-27:
   recovery, package registry, Actions, backup/restore, migration drill, and
   cutover approval.
 - artifact-store and staged promotion are executable planning/build lanes:
-  start artifact-store D7.1/D7.2 and staged-promotion T02 before broad
-  production source-forge migration work.
+  artifact-store D7.1/D7.2 remains open; staged-promotion T02 is now complete
+  before broad production source-forge migration work.
+
+Progress 2026-06-27 staged promotion:
+
+- Completed `RAIL-BS-WP-0006-T02` in `/home/worsch/railiance-cluster`.
+  Added `docs/app-toml-contract.md`, `schemas/railiance-app.schema.json`,
+  and `examples/railiance/app.toml`, defining the repository-local
+  `railiance/app.toml` declaration for identity, ownership, source/artifact
+  policy, platform dependencies, secret references without plaintext values,
+  observability, stage commands/checks/evidence, canary/promotion modes,
+  rollback, and human approval gates.
+- `make fix-consistency REPO=railiance-cluster` passed with pre-existing
+  C-12 warnings and synced the T02 status into State Hub.
+- Next staged-promotion picks are T03 overlay repo pattern, then T04/T05
+  command and canary template implementation.
 
 ## Task: Decide State Hub Migration Strategy