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>

libs/beheer/src/ui/stamdata-table-editor/stamdata-table-editor.component.ts

@@ -242,13 +242,13 @@ export class StamdataTableEditorComponent {
   protected expireLabel = $localize`:@@beheer.expire:Sluiten per vandaag`;
   private removeConfirm = $localize`:@@beheer.removeConfirm:Rij verwijderen? Als andere gegevens ernaar verwijzen, faalt de build-controle (CI). Bij een tabel met een geldigheidsperiode kunt u de rij beter sluiten (geldig tot) in plaats van verwijderen.`;
 
-  /** Deletions can orphan a reference (the CI gate catches it); confirm first (WP-48). */
+  /** Deletions can orphan a reference (the CI gate catches it); confirm first. */
   protected onRemove(index: number) {
     if (confirm(this.removeConfirm)) this.rowRemoved.emit(index);
   }
 
   /** Steer temporal tables toward expiring (close the validity per today) over hard delete —
-      preserves history and can't orphan a reference that was valid earlier (WP-48). */
+      preserves history and can't orphan a reference that was valid earlier. */
   protected onExpire(index: number) {
     const col = this.table().columns.find((c) => /geldigtot/i.test(c.name));
     if (col) this.cellEdited.emit({ row: index, column: col.name, value: this.today });