fix: tests health — utilise app.version au lieu de version hardcodée

tests/test_app.py

@@ -34,7 +34,8 @@ def test_health(client):
     data = resp.json()
     assert "status" in data
     assert data["db"] is True
-    assert data["version"] == "2.1.0"
+    from app.main import app
+    assert data["version"] == app.version
 
 
 def test_dashboard(client):
@@ -190,8 +191,9 @@ def test_csrf_protects_sync(client):
 # ── v1.0.0: Production ──
 
 def test_version_in_health(client):
+    from app.main import app
     resp = client.get("/api/health")
-    assert resp.json()["version"] == "2.1.0"
+    assert resp.json()["version"] == app.version
 
 
 def test_db_tables_exist(client):