chore(cmc/formSpec): delete dead stampFormSpecOnTriggerEvent (plan 61 C4)

Marked @deprecated 2026-05-21 with zero workspace callers. The capability
offer event snapshots content at mint-time, so post-creation stamping
never propagated. createInviteWithFormSpec already lands the snapshot
at events.create time, which the offer event copies — that's the path.

Author: perki

ts/cmc/formSpec.ts

@@ -194,29 +194,6 @@ export async function createInviteWithFormSpec (
   };
 }
 
-/**
- * @deprecated 2026-05-21 — does NOT propagate to the capability offer event
- * (the capability-mint hook snapshots content once at mint time). Use
- * `createInviteWithFormSpec` instead so the snapshot lands at events.create
- * time and the offer event copies it. Kept only for doctor-side analytics
- * (the doctor can read the trigger event directly; the patient cannot via
- * the capability access).
- */
-export async function stampFormSpecOnTriggerEvent (
-  connection: pryv.Connection,
-  triggerEventId: string,
-  formSpec: FormSpec
-): Promise<pryv.Event> {
-  const current = await connection.apiOne('events.getOne', {
-    id: triggerEventId
-  }, 'event') as any;
-  const mergedContent = { ...(current?.content || {}), hdsFormSpec: formSpec };
-  return await connection.apiOne('events.update', {
-    id: triggerEventId,
-    update: { content: mergedContent } as any
-  }, 'event');
-}
-
 /**
  * Patient-side: mirror the FormSpec snapshot onto the patient's own
  * `consent/accept-cmc` event content post-accept. Without this the