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Teknium
627f8a5f1d
Adds _sanitize_tool_error() in model_tools and routes both error paths through it: registry.dispatch's try/except (the primary path for tool exceptions) and handle_function_call's outer except (defense in depth). Stripping targets structural framing tokens that the model itself can react to even though json.dumps already handles wire-layer escaping: XML role tags (tool_call, function_call, result, response, output, input, system, assistant, user), CDATA sections, and markdown code fences. Caps message body at 2000 chars and wraps with [TOOL_ERROR] prefix. Defense-in-depth: a tool exception carrying '<tool_call>...' won't break message framing (json escapes it), but the model still reads those tokens and they nudge it toward role-confusion framing. Ported from ironclaw#1639 (one piece of #3838's three-feature scout). The truncated-tool-call (#1632) and empty-response-recovery (#1677, #1720) pieces are skipped because main now implements both far more thoroughly (run_agent.py L8147/L12209/L13012 for truncation retry + length rewrite; L4500/L15090+ for empty-response scaffolding stripper, multi-stage nudge, fallback model activation).