Refacto du code coté Python, java et coté angular afin de mieux séparer les responsabilité et d'avoir moins de répétitivité dans le code.

Mise en place de tests unitaires coté Python et Angular
Mise en place de la couverture de test directement dans le workflow : le programme ne build pas si jamais un test échoue
Passage en v0.16.2 en conséquence

brain/tests/test_ollama_adapter.py

@@ -0,0 +1,95 @@
+"""Tests de caractérisation de l'adapter Ollama (protocole propre : /api/generate
+one-shot + /api/chat NDJSON streamé)."""
+from __future__ import annotations
+
+import json
+
+import httpx
+import pytest
+import respx
+
+from app.core.config import Settings
+from app.domain.models import ChatMessage
+from app.domain.ports import LLMGenerationTimeout, LLMProviderError
+from app.infrastructure.ollama_adapter import OllamaLLMProvider
+
+_GEN = "http://ollama:11434/api/generate"
+_CHAT = "http://ollama:11434/api/chat"
+
+
+def _svc() -> OllamaLLMProvider:
+    s = Settings(_env_file=None, ollama_base_url="http://ollama:11434",
+                 llm_model="gemma", llm_timeout_seconds=30, llm_num_ctx=8192)
+    return OllamaLLMProvider(s)
+
+
+@respx.mock
+async def test_generate_returns_response_field():
+    respx.post(_GEN).mock(return_value=httpx.Response(200, json={"response": "texte", "done_reason": "stop"}))
+    assert await _svc().generate("prompt") == "texte"
+
+
+@respx.mock
+async def test_generate_payload_always_sends_num_ctx_and_omits_temperature():
+    route = respx.post(_GEN).mock(return_value=httpx.Response(200, json={"response": "x"}))
+    await _svc().generate("p")
+    body = json.loads(route.calls.last.request.content)
+    assert body["model"] == "gemma"
+    assert body["stream"] is False
+    assert body["options"] == {"num_ctx": 8192}
+    assert "format" not in body
+
+
+@respx.mock
+async def test_generate_payload_includes_temperature_and_format_when_given():
+    route = respx.post(_GEN).mock(return_value=httpx.Response(200, json={"response": "x"}))
+    await _svc().generate("p", output_format="json", temperature=0.1)
+    body = json.loads(route.calls.last.request.content)
+    assert body["options"]["temperature"] == 0.1
+    assert body["format"] == "json"
+
+
+@respx.mock
+async def test_generate_http_error_surfaces_ollama_message():
+    respx.post(_GEN).mock(return_value=httpx.Response(404, json={"error": "model 'x' not found"}))
+    with pytest.raises(LLMProviderError) as exc:
+        await _svc().generate("p")
+    assert "not found" in str(exc.value)
+    assert "404" in str(exc.value)
+
+
+@respx.mock
+async def test_generate_read_timeout_is_generation_timeout():
+    respx.post(_GEN).mock(side_effect=httpx.ReadTimeout("trop lent"))
+    with pytest.raises(LLMGenerationTimeout):
+        await _svc().generate("p")
+
+
+@respx.mock
+async def test_generate_connect_timeout_is_provider_error():
+    respx.post(_GEN).mock(side_effect=httpx.ConnectTimeout("injoignable"))
+    with pytest.raises(LLMProviderError) as exc:
+        await _svc().generate("p")
+    assert not isinstance(exc.value, LLMGenerationTimeout)
+
+
+@respx.mock
+async def test_stream_chat_yields_tokens_until_done():
+    body = (
+        '{"message":{"content":"Bon"},"done":false}\n'
+        '{"message":{"content":"jour"},"done":false}\n'
+        '{"done":true}\n'
+    )
+    respx.post(_CHAT).mock(return_value=httpx.Response(200, text=body))
+    tokens = [t async for t in _svc().stream_chat([ChatMessage(role="user", content="hi")])]
+    assert tokens == ["Bon", "jour"]
+
+
+@respx.mock
+async def test_stream_chat_prepends_system_prompt():
+    route = respx.post(_CHAT).mock(return_value=httpx.Response(200, text='{"done":true}\n'))
+    _ = [t async for t in _svc().stream_chat(
+        [ChatMessage(role="user", content="Q")], system_prompt="SYS")]
+    body = json.loads(route.calls.last.request.content)
+    assert body["messages"][0] == {"role": "system", "content": "SYS"}
+    assert body["messages"][-1] == {"role": "user", "content": "Q"}