Fixes found by the live run and by the tests:
- per-level number shapes in the citation grammar: 'third party' no longer
  parses as the indicator 'part' plus the number 'y' (same for 'rules',
  'items', 'Recommendations') — every one of those blocked a correct answer;
- annex Parts C and I were silently dropped because those letters are also
  roman numerals; a level now declares its numbering system (+4 Parts,
  +21 points, corpus 2529 -> 2554 units);
- an em dash between two references is punctuation, not a range separator;
- a tool call printed as plain text is discarded instead of being shown;
- an out-of-corpus block gets its own refusal naming the boundary;
- FATF is a body, not an act: naming it is not a citation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018iSSZTTVSiGi8yJget88f7