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lukaszraczylo
cfdb2c5aae
Adds real OpenAI function-calling support end to end and two test tranches. Client (internal/llm): Request.Tools advertises tools with tool_choice auto; Response.ToolCalls carries the model's calls, decoding each function's JSON-encoded argument string into an object (malformed arguments preserved raw with Decoded=false). Verified live: the gateway round-trips tools and the qwen/deepseek tool-call parsers emit the expected format. Runner: when a test declares Tools, it serializes the model's tool calls into a canonical JSON envelope and scores that, not the free text. Eval (toolcall.go): ToolCalled, NoToolCalled, ToolCallWithArgs (subset match, number/string coercion), ToolSequence, FirstToolIs, ToolNotCalled, ToolArgValuesCover - all parse the envelope, no llm dependency. Tests: 12 function-calling tests (tools/function-calling) covering tool selection, argument extraction, enum constraints, chained and parallel calls, no-tool-needed and missing-param abstention, destructive-tool safety, and name-vs-description traps; 8 ultra-hard single-shot tasks in existing subcategories. Ground-truth self-consistency tests assert every documented answer and ideal tool envelope scores 1.0.