refactor: strip WP-/RB- ticket refs from apps and libs (RD-18)

204 WP-NN/RB-NN comments named a closed ticket instead of the code they
sit next to. git blame already records history and stays correct when
code moves; the comment does not. This sweep removes the reference and
keeps the sentence, across 95 files in apps/ and libs/ plus the
behaviour-spec generator's header text.

Eleven references stay: five story files justify an a11y disable per
the README's rule, and one line in a11y.mdx documents that convention.
Two sentences needed a rewrite, not a deletion, so the reference's
meaning survives its removal. behaviour-spec.mdx is regenerated, not
hand-edited.

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

apps/ssp/src/app/registratie/application/aanvragen.store.ts

@@ -14,7 +14,7 @@ type Err = Error | undefined;
  * change-detection timing, HTTP caching, or a resource `reload()`. `reload()` re-fetches
  * so a page revisit reflects auto-approval (Concept → In behandeling → Goedgekeurd is
  * computed server-side on read). Cancel goes through `runSubmit` and rolls back plus
- * surfaces `lastError` on failure (RB-20).
+ * surfaces `lastError` on failure.
  */
 @Injectable({ providedIn: 'root' })
 export class AanvragenStore {
@@ -23,7 +23,7 @@ export class AanvragenStore {
   private state = signal<RemoteData<Err, Aanvraag[]>>({ tag: 'Loading' });
   readonly aanvragen = this.state.asReadonly();
 
-  /** Set on a failed cancel (RB-20): the optimistic removal already rolled back by
+  /** Set on a failed cancel: the optimistic removal already rolled back by
       then, this is only the message for the alert the page renders above the list. */
   private error = signal<string | null>(null);
   readonly lastError = this.error.asReadonly();
@@ -55,7 +55,7 @@ export class AanvragenStore {
 
   /** Cancel a Concept: drop it now (synchronous, guaranteed), then confirm the DELETE.
       No resync — the delete succeeded, so the optimistic removal is authoritative. On
-      failure, roll back AND surface the error (RB-20) — a silent reappearance leaves the
+      failure, roll back AND surface the error — a silent reappearance leaves the
       user guessing why the block came back. */
   async cancel(id: string) {
     const before = this.state();