OllamaLLM.generate_response() never forwarded the tools parameter to
ollama.Client.chat(), and _parse_response() hard-coded tool_calls to an
empty list. This caused graph memory entity extraction to silently return
zero results when using Ollama as the LLM provider.
- Forward tools to client.chat() when provided
- Parse tool_calls from response (supports both dict and object formats)
- Handle string arguments via json.loads
Fixes#4175
Signed-off-by: sxu75374 <imshuaixu@gmail.com>
Signed-off-by: Small <imshuaixu@gmail.com>
