feat: TOML config loader for vehicles, journeys, and tax scales

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/config_loader.py

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+from flask import current_app
+
+
+def get_vehicles():
+    return current_app.config.get("TOML", {}).get("vehicles", {})
+
+
+def get_journeys():
+    return current_app.config.get("TOML", {}).get("journeys", {})
+
+
+def get_bareme(year: int, cv: int) -> list[dict]:
+    bareme = current_app.config.get("TOML", {}).get("bareme_kilometrique", {})
+    year_data = bareme.get(str(year), {})
+    if cv <= 5:
+        key = "cv_5"
+    elif cv <= 7:
+        key = "cv_6_7"
+    elif cv <= 9:
+        key = "cv_8_9"
+    else:
+        key = "cv_10_11"
+    return year_data.get(key, {}).get("tranches", [])
+
+
+def day_types_without_journey():
+    return {"TT", "MALADE", "CONGE", "RTT", "FERIE"}

config.toml

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+[vehicles.voiture]
+name = "Peugeot 308"
+fuel = "diesel"
+co2_per_km = 142
+cv = 5
+
+[vehicles.velo]
+name = "Vélo"
+fuel = "none"
+co2_per_km = 0
+
+[journeys.voiture_seule]
+name = "Voiture seule"
+distances = { voiture = 25 }
+
+[journeys.voiture_velo]
+name = "Voiture + Vélo"
+distances = { voiture = 14, velo = 8 }
+
+[journeys.velo_seul]
+name = "Vélo seul"
+distances = { velo = 24 }
+
+[[bareme_kilometrique.2025.cv_5.tranches]]
+km_max = 3000
+taux = 0.548
+forfait = 0
+
+[[bareme_kilometrique.2025.cv_5.tranches]]
+km_max = 6000
+taux = 0.316
+forfait = 699
+
+[[bareme_kilometrique.2025.cv_5.tranches]]
+km_max = 0
+taux = 0.364
+forfait = 0
+
+[[bareme_kilometrique.2025.cv_6_7.tranches]]
+km_max = 3000
+taux = 0.655
+forfait = 0
+
+[[bareme_kilometrique.2025.cv_6_7.tranches]]
+km_max = 6000
+taux = 0.374
+forfait = 836
+
+[[bareme_kilometrique.2025.cv_6_7.tranches]]
+km_max = 0
+taux = 0.435
+forfait = 0

pytest.ini

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+[pytest]
+testpaths = tests
+pythonpath = .

tests/test_config_loader.py

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+def test_get_vehicles_returns_configured_vehicles(app):
+    with app.app_context():
+        from app.config_loader import get_vehicles
+        vehicles = get_vehicles()
+        assert "voiture" in vehicles
+        assert vehicles["voiture"]["co2_per_km"] == 142
+
+
+def test_get_journeys_returns_profiles(app):
+    with app.app_context():
+        from app.config_loader import get_journeys
+        journeys = get_journeys()
+        assert "voiture_seule" in journeys
+        assert journeys["voiture_seule"]["distances"]["voiture"] == 25
+
+
+def test_get_bareme_returns_tranches(app):
+    with app.app_context():
+        from app.config_loader import get_bareme
+        tranches = get_bareme(2025, 5)
+        assert len(tranches) == 3
+        assert tranches[0]["taux"] == 0.548
+
+
+def test_day_types_without_journey(app):
+    with app.app_context():
+        from app.config_loader import day_types_without_journey
+        types = day_types_without_journey()
+        assert "TT" in types
+        assert "WORK" not in types