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_generate_page.py

@@ -0,0 +1,65 @@
+"""Tests du use case de génération de page (app.application.generate_page)."""
+from __future__ import annotations
+
+import pytest
+
+from app.application.generate_page import GeneratePageUseCase
+from app.domain.models import PageGenerationContext
+from app.domain.ports import LLMProviderError
+
+_CTX = PageGenerationContext(
+    lore_name="Eldoria",
+    folder_name="PNJ",
+    template_name="Personnage",
+    template_fields=["apparence", "histoire"],
+    page_title="Aragorn",
+    lore_description="un monde sombre",
+)
+
+
+def test_build_prompt_includes_context_and_fields():
+    p = GeneratePageUseCase._build_prompt(_CTX, "fr")
+    assert "Eldoria" in p
+    assert "Aragorn" in p
+    assert '"apparence"' in p
+    assert "un monde sombre" in p
+
+
+def test_build_prompt_omits_lore_description_when_absent():
+    ctx = PageGenerationContext("L", "F", "T", ["a"], "Titre", None)
+    assert "Description de l'univers" not in GeneratePageUseCase._build_prompt(ctx)
+
+
+def test_parse_values_keeps_only_expected_fields():
+    out = GeneratePageUseCase._parse_values(
+        '{"apparence":"grand","histoire":"longue","extra":"ignoré"}',
+        ["apparence", "histoire"])
+    assert out == {"apparence": "grand", "histoire": "longue"}
+
+
+def test_parse_values_missing_field_becomes_empty_string():
+    out = GeneratePageUseCase._parse_values('{"apparence":"grand"}', ["apparence", "histoire"])
+    assert out == {"apparence": "grand", "histoire": ""}
+
+
+def test_parse_values_casts_to_str_and_strips():
+    out = GeneratePageUseCase._parse_values('{"n": 42, "s": "  x  "}', ["n", "s"])
+    assert out == {"n": "42", "s": "x"}
+
+
+def test_parse_values_bad_json_raises():
+    with pytest.raises(LLMProviderError):
+        GeneratePageUseCase._parse_values("pas du json", ["a"])
+
+
+def test_parse_values_non_object_raises():
+    with pytest.raises(LLMProviderError):
+        GeneratePageUseCase._parse_values("[1, 2]", ["a"])
+
+
+async def test_execute_returns_filtered_result():
+    class FakeLLM:
+        async def generate(self, prompt, *, output_format=None, temperature=None):
+            return '{"apparence":"grand","histoire":"épique","parasite":"x"}'
+    result = await GeneratePageUseCase(FakeLLM()).execute(_CTX)
+    assert result.values == {"apparence": "grand", "histoire": "épique"}