local LLM support

src/physcom/llm/registry.py

@@ -10,9 +10,11 @@ from physcom.llm.base import LLMProvider
 def build_llm_provider() -> LLMProvider | None:
     """Return an LLMProvider based on env vars, or None if not configured.
 
-    LLM_PROVIDER   — provider name ('gemini'; more can be added)
+    LLM_PROVIDER   — provider name ('gemini', 'ollama'; more can be added)
     GEMINI_API_KEY — required when LLM_PROVIDER=gemini
     GEMINI_MODEL   — optional Gemini model name (default: gemini-2.0-flash)
+    OLLAMA_MODEL   — optional Ollama model name (default: qwen2.5:7b)
+    OLLAMA_HOST    — optional Ollama server URL (default: http://localhost:11434)
     """
     provider = os.environ.get("LLM_PROVIDER", "").lower().strip()
 
@@ -27,4 +29,10 @@ def build_llm_provider() -> LLMProvider | None:
         from physcom.llm.providers.gemini import GeminiLLMProvider
         return GeminiLLMProvider(api_key=api_key, model=model)
 
-    raise ValueError(f"Unknown LLM_PROVIDER: {provider!r}. Supported: gemini")
+    if provider == "ollama":
+        model = os.environ.get("OLLAMA_MODEL", "qwen2.5:7b")
+        host = os.environ.get("OLLAMA_HOST", "http://localhost:11434")
+        from physcom.llm.providers.ollama import OllamaLLMProvider
+        return OllamaLLMProvider(model=model, host=host)
+
+    raise ValueError(f"Unknown LLM_PROVIDER: {provider!r}. Supported: gemini, ollama")