Teknium 857a5d7b47 fix: sanitize surrogate characters from clipboard paste to prevent UnicodeEncodeError (#3624) ...

Pasting text from rich-text editors (Google Docs, Word, etc.) can inject
lone surrogate characters (U+D800..U+DFFF) that are invalid UTF-8.
The OpenAI SDK serializes messages with ensure_ascii=False, then encodes
to UTF-8 for the HTTP body — surrogates crash this with:
  UnicodeEncodeError: 'utf-8' codec can't encode character '\udce2'

Three-layer fix:
1. Primary: sanitize user_message at the top of run_conversation()
2. CLI: sanitize in chat() before appending to conversation_history
3. Safety net: catch UnicodeEncodeError in the API error handler,
   sanitize the entire messages list in-place, and retry once.
   Also exclude UnicodeEncodeError from is_local_validation_error
   so it doesn't get classified as non-retryable.

Includes 14 new tests covering the sanitization helpers and the
integration with run_conversation().

2026-03-28 16:53:14 -07:00

6.0 KiB

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