[Bug] UTF-8 String Indexing Panic with CJK Characters

Bug Description

thread '<unnamed>' (9871407) panicked at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library/core/src/str/mod.rs:833:21:
byte index 23 is not a char boundary; it is inside '行' (bytes 21..24) of 金额统一 | 删空行")
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
fatal runtime error: failed to initiate panic, error 5, aborting
zsh: abort claude -r
liujiahao@192 interview %

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.2
• Feedback ID: 305486c1-28da-4c44-b933-b3f8568672fa

Errors

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