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>

tests/test_templates.py

@@ -52,10 +52,10 @@ def test_handoff_skill_references_files_that_exist():
     assert not [p for p in paths if not (skill / p).exists()]
 
 
-def test_handoff_lists_twelve_failure_classes():
-    skill = ROOT / "skills" / "rpa-bot-handoff" / "templates"
-    classes = (skill / "failure-classes.md").read_text(encoding="utf-8")
-    assert len(re.findall(r"^## F\d+\.", classes, re.MULTILINE)) == 12
+def test_handoff_skill_stays_short():
+    skill = (ROOT / "skills" / "rpa-bot-handoff" / "SKILL.md").read_text(encoding="utf-8")
+    assert len(skill.split()) <= 500, len(skill.split())
+    assert len(re.findall(r"^\d+\. ", skill.split("## Don't miss")[1], re.MULTILINE)) == 6
 
 
 def test_handoff_sop_has_five_sections_in_order():