AI skill: SKILL.md, AI contract, scrubbed references, eval fixture (d)

- rpa-dashboard-ai/SKILL.md: trigger description and the shared question flow;
  points at the no-AI frontend.md, themes and palette instead of copying them.
- templates/contract.md: runs, review rows, endpoints and the server approve gate.
- Superbill extracts: patient names and the client name removed, every file
  carries an EXAMPLE ONLY banner. tests/test_reference_scan.py checks both skills
  for patient data, internal IPs, credentials and keys.
- tests/fixtures/d-ai-extraction and its eval entry, which runs page_check_ai
  on the built folder.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

rpa-dashboard-ai/templates/reference/web/index.css

@@ -1,3 +1,4 @@
+/* EXAMPLE ONLY: an extract from the Superbill Review prototype, kept as reference for porting. ECW/eClinicalWorks, Tebra, 'Example Client', SPB_* tables and patient/ticket wording are that project's examples. Don't copy them into a new project. */
 @import 'tailwindcss';
 
 /* Manual dark mode: Tailwind v4 defaults `dark:` to the OS preference, but this
@@ -1662,7 +1663,7 @@ textarea,
   .sb-brand-name { background-position: 0 0; }
 }
 
-/* ── Office Location (a Gulf Coast ticket's yellow note) ──────────────────────
+/* ── Office Location (a Example Client ticket's yellow note) ──────────────────────
    The note is amber because it IS amber on the page; everything else stays on
    the neutral surfaces. No brand ramp here -- it is reserved for its six
    things (DESIGN.md, "The One Loud Colour Rule"). */