* chat: normalize tool call IDs across model switches
Kimi requires function-indexed tool call IDs, while Anthropic accepts only a restricted character set. Normalize outbound request copies for each provider without mutating stored conversation history.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* chat: avoid collisions in normalized tool call IDs
Reserve valid IDs before allocating sanitized Anthropic IDs, then reuse the request-scoped mapping for matching tool results.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
d4bfecdaa8