docs: update CLAUDE.md workflow description for integrated cleanup

Cleanup of merged PRs and deleted branches is now part of the deploy
step (deploy-gh-pages.js), not a separate workflow step.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: themr0c

.claude/CLAUDE.md

@@ -32,7 +32,7 @@ When creating PRs, follow `.github/pull_request_template.md`:
 
 | Workflow | Trigger | Purpose |
 |---|---|---|
-| `build-asciidoc.yml` | Push to main/release | Builds AsciiDoc docs and deploys to GitHub Pages. Cleans up merged PR preview branches. |
+| `build-asciidoc.yml` | Push to main/release | Builds AsciiDoc docs and deploys to GitHub Pages (deploy includes cleanup of merged/closed PRs and deleted branches). |
 | `pr.yml` | PR | Builds HTML preview, runs CQA checks, deploys to `gh-pages`, posts preview URL and CQA checklist as PR comments. Build scripts sourced from base branch. |
 | `style-guide.yml` | PR | Runs Vale linter on `assemblies/` for style guide compliance. |
 | `shellcheck.yml` | PR (`*.sh`) | Runs shellcheck on changed shell scripts via reviewdog. |