feat(api): Implement authentication router and secure dependencies

tests/api/test_auth.py

@@ -20,7 +20,7 @@ def mock_user():
 
 def test_register_user_success():
     """Test successful user registration."""
-    # We'll need to mock history_manager.get_user and create_user
+    # We mock it where it is used in the router
     with patch("ea_chatbot.api.routers.auth.history_manager") as mock_hm:
         mock_hm.get_user.return_value = None
         mock_hm.create_user.return_value = User(id="1", username="new@example.com", display_name="New")
@@ -30,7 +30,6 @@ def test_register_user_success():
             json={"email": "new@example.com", "password": "password123", "display_name": "New"}
         )
         
-        # This will fail now because the router doesn't exist
         assert response.status_code == 201
         assert response.json()["email"] == "new@example.com"
 
@@ -74,3 +73,20 @@ def test_oidc_login_redirect():
         response = client.get("/auth/oidc/login")
         assert response.status_code == 200
         assert response.json()["url"] == "https://oidc-provider.com/auth"
+
+def test_get_me_success():
+    """Test getting current user with a valid token."""
+    from ea_chatbot.api.utils import create_access_token
+    token = create_access_token(data={"sub": "test@example.com", "user_id": "123"})
+    
+    with patch("ea_chatbot.api.dependencies.history_manager") as mock_hm:
+        mock_hm.get_user.return_value = User(id="123", username="test@example.com", display_name="Test")
+        
+        response = client.get(
+            "/auth/me",
+            headers={"Authorization": f"Bearer {token}"}
+        )
+        
+        assert response.status_code == 200
+        assert response.json()["email"] == "test@example.com"
+        assert response.json()["id"] == "123"