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>

tests/fixtures/d-ai-extraction/app.py

@@ -0,0 +1,11 @@
+"""Upload a scanned invoice, get its fields back."""
+from fastapi import FastAPI, UploadFile
+
+from extractor import extract_invoice
+
+app = FastAPI()
+
+
+@app.post("/extract")
+async def extract(file: UploadFile):
+    return extract_invoice(await file.read(), file.content_type or "application/pdf")