fix(workplans): adopt ADR-007 derived identifiers for unregistered records

These workplans exist only in the retired local hub. Their random pre-ADR-007
identifiers are refused by C-06 as stale references, so they cannot be
registered. Deriving from the canonical record id takes no identity from
anything: central does not hold them and the old ids die with the cache.

Records central already holds were deliberately left untouched.

Refs CUST-WP-0068-T06

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 2583210@bnt-lap001
Assistant-Session: f2bff2d5-e9b2-4338-92ca-10282a927006

workplans/FLEX-WP-0012-credential-grant-authorization-surface.md

@@ -13,7 +13,7 @@ related_workplans:
   - RAILIANCE-WP-0005
 created: "2026-08-11"
 updated: "2026-08-23"
-state_hub_workstream_id: "89ecdb1f-ceb0-4a50-b72d-c3dfd5fa7c73"
+state_hub_workstream_id: "2a6b5764-1831-5305-b46e-0991d02675df"
 ---
 
 # FLEX-WP-0012 - Authorize railiance-platform credential-grant requests
@@ -86,7 +86,7 @@ What is *actually* missing is narrower and worth stating precisely:
 id: FLEX-WP-0012-T01
 status: done
 priority: medium
-state_hub_task_id: "a1c9ba0c-3413-4823-9f9e-ccee09cf5d74"
+state_hub_task_id: "f8491771-be1a-5c70-a4aa-059e48536630"
 ```
 
 Two honest options, and the choice is a charter question rather than a
@@ -142,7 +142,7 @@ one generic flex-auth decision surface.
 id: FLEX-WP-0012-T02
 status: done
 priority: medium
-state_hub_task_id: "7e9c4e59-e59c-4617-a87f-99142952fe78"
+state_hub_task_id: "685f3d70-7c50-5664-95ae-1e8c93b14073"
 ```
 
 Add `examples/railiance-platform/` with a protected-system manifest, subject
@@ -188,7 +188,7 @@ returned `credential_grant_allowed` for the registered runtime grant and
 id: FLEX-WP-0012-T03
 status: done
 priority: medium
-state_hub_task_id: "3335b2b7-cf1a-411d-95b3-03c4b4c35659"
+state_hub_task_id: "045ec743-4411-5b42-b9e8-df25b0c07984"
 ```
 
 Implement whichever shape T01 chose. If B, the adapter must reuse the
@@ -240,7 +240,7 @@ over real HTTP, `go test ./...` is green, and `gofmt`/`go vet` are clean.
 id: FLEX-WP-0012-T04
 status: done
 priority: low
-state_hub_task_id: "40015a87-040c-4d48-b360-fd5566dbc552"
+state_hub_task_id: "0dcf2e1f-baa2-5fea-9e3e-9a73795af11f"
 ```
 
 Reply to capability request `893ff109` — it has been open since 2026-07-02