$ cp -r examples/ch04/budget-vs-actual-1 /tmp/Budget-vs-Actual-1
$ python3 tools/validate_pack.py --auto /tmp/Budget-vs-Actual-1
/tmp/Budget-vs-Actual-1: FAIL (split, 0/20 files, 0 bytes below the root)
  error: SKILL.md: spec 2.3: name 'budget-vs-actual-1' does not match folder 'Budget-vs-Actual-1'
  error: spec 2: reference validator, Budget-vs-Actual-1: Validation failed for /tmp/Budget-vs-Actual-1:
  - Directory name 'Budget-vs-Actual-1' must match skill name 'budget-vs-actual-1'
