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/find-concept.ts

@@ -3,7 +3,7 @@ import { AanvragenAdapter, parseAanvragen } from '@registratie/infrastructure/aa
 
 /**
  * Read half of the Concept lookup that `createDraftSync` (`draft-sync.ts`) needs
- * before it can start writing (RB-21 / CQ-001). Free functions that take the adapter
+ * before it can start writing (CQ-001). Free functions that take the adapter
  * as a parameter, not `inject()`, so they get a direct spec without Angular TestBed.
  * `createDraftSync` keeps the closure state (`id`, `resumeGate`) and the write path;
  * these two functions only read.