The AskUserQuestion format block is inlined into every interactive skill (~33). It carried the full multi-paragraph non-ASCII/CJK escaping manual inline, but that rationale only matters when a question contains CJK text and the operative rule already lives in the always-loaded self-check. Moved the justification to docs/askuserquestion-cjk.md (read on demand); kept the rule + a pointer. Corpus: Claude-host SKILL.md total 3,087,499 -> 3,057,975 B (-29,524 B, ~900 B x ~33 skills). Layer 0 still passes — the core decision-brief format stays always-loaded; only the rare CJK rationale moved. Atomic with the all-host regen (skill-docs.yml freshness gate). VERSION + package.json -> 1.58.0.0. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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AskUserQuestion — non-ASCII / CJK characters
Read this on demand when an AskUserQuestion contains Chinese (繁體/簡體), Japanese, Korean, or other non-ASCII text. The operative rule is in the always-loaded AskUserQuestion self-check ("Non-ASCII characters written directly, NOT \u-escaped"); this doc is the full justification.
The rule
When any string field (question, option label, option description) contains
non-ASCII text, emit the literal UTF-8 characters in the JSON string. Never
escape them as \uXXXX.
Claude Code's tool parameter pipe is UTF-8 native and passes characters through
unchanged. Only JSON-mandatory escapes remain allowed: \n, \t, \", \\.
Why escaping fails
Manually escaping requires recalling each codepoint from training, which is
unreliable for long CJK strings — the model regularly emits the wrong codepoint.
Example: writing thinking it is 管 (U+7BA1), but is actually ,
so the user sees 管理工具 rendered as 3用箱.
The trigger is long, multi-line questions with hundreds of CJK characters: that is exactly when reflexive escaping kicks in and exactly when miscoding is most damaging. Long ≠ escape. Keep characters literal.
- Wrong:
"question": "請選擇\uXXXX\uXXXX\uXXXX\uXXXX" - Right:
"question": "請選擇管理工具"