2.1.1

• Changed: removed wording in the skill that broke the skill's own rules. The
  12 document rules in SKILL.md lost their bold lead-ins. Rule 11 lost its
  "not X, but Y" title. The References list, the rule-catalog headings, and
  four cells in word-swaps.md lost their em-dashes. The rule content did not
  change.
• Removed: filler and claims with no source. SKILL.md lost "a tired
  mechanic", "Nothing else in this file is optional", and "Read them last,
  apply them first". use-cases.md lost "a stressed reader at 2 a.m." and "STE
  cuts the error rate and the cost". rule-catalog.md lost "The ones agents
  break are 1.7, 1.11, and 1.13". The SKILL.md example is now labeled "AI
  output" and not "real AI output", because no committed eval file holds it.
• Changed: the sentence "The same rule covers a fact, not just a word" in
  SKILL.md, prompts/system-prompt.md, and output-styles/simple-english.md
  now starts "Also name the host". The two mirrors stay byte-identical.
• No benchmark ran on this release. The published figures still describe
  2.0.1.