fix(workplans): qualify ad-hoc identifiers with the repository prefix

`ADHOC-YYYY-MM-DD` is unique per date but not per repository, so any two repos
opening an ad-hoc on the same day collide. The 2026-08-26 fleet projection
reset refused 9 records for exactly this reason.

Canon (work-record-types_v0.1, CUST-WP-0066) settled the form as
`{PREFIX}-WP-ADHOC-YYYY-MM-DD`, filename unchanged, and grandfathered existing
ids on the condition they are never *silently* re-derived. This is the explicit
migration that clause allows for.

The hub id is derived from the record id, so a changed id is a different
record: stale state_hub_*_id fields are dropped and fix-consistency re-derives.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

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

workplans/ADHOC-2026-08-15.md

@@ -1,5 +1,5 @@
 ---
-id: ADHOC-2026-08-15
+id: ITC-WP-ADHOC-2026-08-15
 type: workplan
 title: "Ad hoc: feedback directory and provision relationships"
 domain: infotech
@@ -14,10 +14,9 @@ spec_refs:
   - feedback/README.md
   - demand/CapabilityProvisionEconomics.md
   - demand/ProvisionRelationships.md
-state_hub_workstream_id: "6134fd4f-dc96-506e-b091-14b9914150f8"
 ---
 
-# ADHOC-2026-08-15 — Consumer feedback directory
+# ITC-WP-ADHOC-2026-08-15 — Consumer feedback directory
 
 ## Goal
 
@@ -32,10 +31,9 @@ needed, so class `P` does not become a dumping ground again.
 ### T01 — Establish `feedback/` front door
 
 ```task
-id: ADHOC-2026-08-15-T01
+id: ITC-WP-ADHOC-2026-08-15-T01
 status: done
 priority: medium
-state_hub_task_id: "733b5494-398a-5530-8f70-5b2c4d4e8a9a"
 ```
 
 Add `feedback/README.md`, `TEMPLATE.md`, and `index.yaml`. Distinguish the
@@ -45,10 +43,9 @@ practice. Register the path in `canon.yaml`. Not a canon artifact.
 ### T02 — Seed first report from resource-control
 
 ```task
-id: ADHOC-2026-08-15-T02
+id: ITC-WP-ADHOC-2026-08-15-T02
 status: done
 priority: medium
-state_hub_task_id: "a0868474-d748-50a2-9088-c633665ec2be"
 ```
 
 Write `feedback/2026-08-15-resource-control-capability-provision.md` from the
@@ -58,10 +55,9 @@ Write `feedback/2026-08-15-resource-control-capability-provision.md` from the
 ### T03 — Provision-to-provision relationships
 
 ```task
-id: ADHOC-2026-08-15-T03
+id: ITC-WP-ADHOC-2026-08-15-T03
 status: done
 priority: high
-state_hub_task_id: "5238fcd5-11f0-592e-ab88-0c248ffc5c7b"
 ```