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/shared/src/infrastructure/dev-params.ts

@@ -1,5 +1,5 @@
 /**
- * Remove the dev-only `?scenario=` and `?role=` params from a URL (WP-37). Once the
+ * Remove the dev-only `?scenario=` and `?role=` params from a URL. Once the
  * dev switcher (debug-state) has been used, sessionStorage is the authoritative source
  * for both — `currentScenario()`/`currentRole()` read the URL FIRST, so a stale param
  * left in the address bar would override the switcher on reload (the "stuck on slow"