build(security): add migration and CI security gates

backend/tests/test_api_security.py

@@ -0,0 +1,59 @@
+from io import BytesIO
+from unittest.mock import patch
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+from PIL import Image
+
+from app.api import system_config, upload
+
+
+def _png_bytes() -> bytes:
+    buffer = BytesIO()
+    Image.new("RGB", (8, 8), color=(10, 20, 30)).save(buffer, format="PNG")
+    return buffer.getvalue()
+
+
+def _upload_client(authenticated: bool) -> TestClient:
+    app = FastAPI()
+    app.include_router(upload.router)
+    if authenticated:
+        app.dependency_overrides[upload.require_any_role] = lambda: {
+            "user_id": "a2d4447f-7b67-4304-ad9a-953007e75ef2",
+            "role": "manager",
+        }
+    return TestClient(app)
+
+
+def test_upload_endpoint_requires_bearer_authentication():
+    response = _upload_client(authenticated=False).post(
+        "/upload/image",
+        files={"file": ("photo.png", _png_bytes(), "image/png")},
+    )
+
+    assert response.status_code == 401
+
+
+def test_upload_endpoint_validates_and_normalizes_before_storage():
+    with patch("app.api.upload.put_validated_image") as put_image:
+        response = _upload_client(authenticated=True).post(
+            "/upload/image",
+            files={"file": ("photo.png", _png_bytes(), "image/png")},
+        )
+
+    assert response.status_code == 200
+    object_key = response.json()["object_key"]
+    assert object_key.startswith("uploads/a2d4447f-7b67-4304-ad9a-953007e75ef2/")
+    assert object_key.endswith(".jpg")
+    stored_bytes = put_image.call_args.args[1]
+    with Image.open(BytesIO(stored_bytes)) as image:
+        assert image.format == "JPEG"
+
+
+def test_system_configuration_cannot_be_read_without_director_authentication():
+    app = FastAPI()
+    app.include_router(system_config.router)
+
+    response = TestClient(app).get("/system-config")
+
+    assert response.status_code == 401