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/ITC-WP-0015-evidence-basis.md

@@ -17,7 +17,7 @@ spec_refs:
   - infospace/models/governance/InfoTechCanonGovernanceModel.md
   - infospace/models/governance/evidence-basis.yaml
   - infospace/models/capability/InfoTechCanonCapabilityModel.md
-state_hub_workstream_id: "df25fb73-98db-4165-a2a9-5be65ba11140"
+state_hub_workstream_id: "0419b55f-541c-5289-9918-b30aa2d2a827"
 ---
 
 # ITC-WP-0015 — Evidence Basis
@@ -44,7 +44,7 @@ the same scale is needed on actuals and thresholds.
 id: ITC-WP-0015-T01
 status: done
 priority: high
-state_hub_task_id: "f0b4d93e-e417-44f4-9b73-b25ba23988be"
+state_hub_task_id: "15b98c69-6de7-56fe-8d72-d0ac2221ceef"
 ```
 
 Steward-file `demand/EvidenceBasis.md` from the consumer's published
@@ -58,7 +58,7 @@ id: ITC-WP-0015-T02
 status: done
 priority: high
 depends_on: [T01]
-state_hub_task_id: "57352beb-6ac1-4757-9d93-971f5a52fd84"
+state_hub_task_id: "8a4af843-241d-51c4-adb9-6589d23e1f08"
 ```
 
 Add `infospace/models/governance/evidence-basis.yaml` as the closed
@@ -71,7 +71,7 @@ id: ITC-WP-0015-T03
 status: done
 priority: high
 depends_on: [T02]
-state_hub_task_id: "360a76f3-f0ca-4b40-b2b5-a89dbc5ac068"
+state_hub_task_id: "5cf6b32b-fddf-5289-99b7-df9f5e2fbc8f"
 ```
 
 CAP-R10: a consumption row MUST declare `basis`. Unknown carries no