Crash with Cyrillic (UTF-8 multibyte) text in agent context - byte boundary error

[almacduni]

Bug Description

Forge crashes when user pastes or types Cyrillic (UTF-8 multibyte) text directly into the interactive prompt.
Steps to Reproduce:

Steps to Reproduce

Any wikipedia article would work

Launch Forge (forge)
Paste or type any Cyrillic text into the prompt
Forge crashes

Expected Behavior

Forge should handle Cyrillic long input normally.

Actual Behavior

ERROR: byte index 3 is not a char boundary; it is inside 'Р' (bytes 2..4) of КРИТЕРИИ — ЧТО нужно получить...

Forge Version

2.11.0

Operating System & Version

linux

AI Provider

None

Model

No response

Installation Method

npx forgecode@latest

Configuration

[amitksingh1490]

working on this #3001

[almacduni]

Thanks should be an easy bug something with slicing i guess

[almacduni]

Still [14:17:16] ERROR: byte index 7 is not a char boundary; it is inside 'х' (bytes 6..8) of подход - загрузить файл целиком в repl_execute и вывести полностью.\",\"thinking_tokens\":85,\"provider\":\"minimax\",\"ttft_ms\":6599,\"connect_ms\":37,\"reasoning_time_ms\":1023,\"resourceAttributes\":{\"teleme[...] @amitksingh1490 @tusharmath