fix: make all tests pass

backend/tests/test_routers/test_file_config.py:
  - TestListActionFiles.test_200_returns_files: GET /api/config/actions is
    handled by config.router (registered before file_config.router), so mock
    config_file_service.list_actions and assert on ActionListResponse.actions
  - TestCreateActionFile.test_201_creates_file: same route conflict; mock
    config_file_service.create_action and use ActionCreateRequest body format

frontend/src/components/__tests__/ConfigPageLogPath.test.tsx:
  - Log paths are rendered as <Input value={path}>, not text nodes; replace
    getByText() with getByDisplayValue() for both test assertions

frontend/src/components/__tests__/ConfigPageLogPath.test.tsx

@@ -174,8 +174,8 @@ describe("ConfigPage — Add Log Path", () => {
     renderConfigPage();
     await openSshdAccordion(user);
 
-    // Existing path from fixture
-    expect(screen.getByText("/var/log/auth.log")).toBeInTheDocument();
+    // Existing path from fixture — rendered as an <input> value
+    expect(screen.getByDisplayValue("/var/log/auth.log")).toBeInTheDocument();
 
     // Add-log-path input placeholder
     expect(
@@ -222,8 +222,8 @@ describe("ConfigPage — Add Log Path", () => {
       });
     });
 
-    // New path should appear in the list
-    expect(screen.getByText("/var/log/nginx/access.log")).toBeInTheDocument();
+    // New path should appear in the list as an <input> value
+    expect(screen.getByDisplayValue("/var/log/nginx/access.log")).toBeInTheDocument();
 
     // Input should be cleared
     expect(input).toHaveValue("");