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/draft-sync.ts

@@ -63,7 +63,7 @@ export function createDraftSync(deps: DraftSyncDeps) {
     if (id) return id;
     ensuring ??= adapter
       .create(deps.type)
-      // WP-35: one Concept per type is server-enforced. Within a tab the resumeGate
+      // One Concept per type is server-enforced. Within a tab the resumeGate
       // already prevents a second create, but a cross-tab/stale race can still hit the
       // server's guard (409) — recover by adopting the existing Concept instead of
       // erroring. Only recover when one actually exists; otherwise surface the failure.