rpa-bot-handoff: short skill, MEK SOP as the model

The skill itself read as too detailed. SKILL.md is now a short checklist
(460 words, was 1,321): 5 steps, 5 rules, and 6 one-line "don't miss"
checks that replace the 12 Tebra failure classes (failure-classes.md
removed). The MEK Charge Reconciliation SOP - the 3-page PDF ops liked -
replaces the Tebra example as the model (emails swapped for examples).
New test keeps SKILL.md under 500 words with 6 checks.

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

skills/rpa-bot-handoff/templates/to_docx.py

@@ -120,7 +120,7 @@ def to_pdf(docx_path):
 
 
 def selfcheck():
-    example = Path(__file__).parent / "reference" / "tebra-auto-post.md"
+    example = Path(__file__).parent / "reference" / "mek-charge-reconciliation.md"
     sop = "# " + example.read_text(encoding="utf-8").split("\n---\n", 1)[1].split("\n# ", 1)[1]
     out = Path(tempfile.mkdtemp()) / "HANDOVER-SOP.docx"
     convert(sop, out)