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/brief/domain/org-template.machine.ts

@@ -3,7 +3,7 @@ import { Margins, OrgTemplate, OrgTemplateAdminView, OrgTemplateVersion } from '
 import { UploadMsg, UploadState, initialUpload, reduceUpload } from '@shared/domain/upload.machine';
 
 /**
- * The admin org-template editor as one Elm-style machine (WP-26, PRD Brief v2 §5) —
+ * The admin org-template editor as one Elm-style machine (PRD Brief v2 §5) —
  * the same idiom as the wizards. The DRAFT org template is form state (edited in
  * place on the canvas); publish/rollback are effects that come back as `DraftLoaded`.
  * `dirty` tracks unsaved edits (the store debounce-saves them). The logo upload is