feat(portal-frontend): implement record-assessment form and closurePending display

Owned-mode form embedded in case-actions where the redirect link
isn't used. verifiedItems is comma-split client-side for convenience
only; the server re-validates everything regardless. closurePending
renders as a neutral success note (ADR-001), never as an error. 422
InvariantViolationResponse surfaces invariant+message verbatim in a
banner, matching the edit-details form's approach.

portal-frontend/src/app/case-detail/case-actions/case-actions.ts

@@ -1,10 +1,11 @@
 import { Component, input, output } from '@angular/core';
 
 import { ActionLink, CaseDetailActions } from '../case-detail.types';
+import { RecordAssessmentForm } from '../record-assessment-form/record-assessment-form';
 
 @Component({
   selector: 'app-case-actions',
-  imports: [],
+  imports: [RecordAssessmentForm],
   templateUrl: './case-actions.html',
   styleUrl: './case-actions.css',
 })
@@ -13,4 +14,5 @@ export class CaseActions {
 
   readonly takeOwnershipRequested = output<ActionLink>();
   readonly releaseOwnershipRequested = output<ActionLink>();
+  readonly savedRequested = output<void>();
 }