feat: LLM module — Ollama client with transcript refinement

tests/test_llm.py

@@ -0,0 +1,37 @@
+import pytest
+from unittest.mock import AsyncMock, patch, MagicMock
+
+
+@pytest.mark.asyncio
+async def test_refine_calls_ollama():
+    from llm import OllamaClient
+    mock_response = MagicMock()
+    mock_response.json.return_value = {"response": "# Titel\n\nInhalt."}
+    mock_response.raise_for_status = MagicMock()
+
+    with patch("httpx.AsyncClient") as MockClient:
+        instance = MockClient.return_value.__aenter__.return_value
+        instance.post = AsyncMock(return_value=mock_response)
+        client = OllamaClient(base_url="http://localhost:11434")
+        result = await client.refine(
+            raw_text="Das ist ein test.",
+            instructions="Mach eine Zusammenfassung.",
+            model="gemma3:12b",
+        )
+        assert "Inhalt" in result
+        instance.post.assert_called_once()
+
+
+@pytest.mark.asyncio
+async def test_list_models_returns_list():
+    from llm import OllamaClient
+    mock_response = MagicMock()
+    mock_response.json.return_value = {"models": [{"name": "gemma3:12b"}, {"name": "mistral:7b"}]}
+    mock_response.raise_for_status = MagicMock()
+
+    with patch("httpx.AsyncClient") as MockClient:
+        instance = MockClient.return_value.__aenter__.return_value
+        instance.get = AsyncMock(return_value=mock_response)
+        client = OllamaClient(base_url="http://localhost:11434")
+        models = await client.list_models()
+        assert "gemma3:12b" in models