Add QA test outputs, build scripts, and Dockerfile validation

- Created `qa-test-output-after-fix.txt` and `qa-test-output.txt` to log results of certificate page authentication tests.
- Added `build.sh` for deterministic backend builds in CI, utilizing `go list` for efficiency.
- Introduced `codeql_scan.sh` for CodeQL database creation and analysis for Go and JavaScript/TypeScript.
- Implemented `dockerfile_check.sh` to validate Dockerfiles for base image and package manager mismatches.
- Added `sourcery_precommit_wrapper.sh` to facilitate Sourcery CLI usage in pre-commit hooks.

frontend/src/components/RequireAuth.tsx

@@ -0,0 +1,21 @@
+import React from 'react';
+import { Navigate, useLocation } from 'react-router-dom';
+import { useAuth } from '../hooks/useAuth';
+import { LoadingOverlay } from './LoadingStates';
+
+const RequireAuth: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const { isAuthenticated, isLoading } = useAuth();
+  const location = useLocation();
+
+  if (isLoading) {
+    return <LoadingOverlay message="Authenticating..." />;  // Consistent loading UX
+  }
+
+  if (!isAuthenticated) {
+    return <Navigate to="/login" state={{ from: location }} replace />;
+  }
+
+  return children;
+};
+
+export default RequireAuth;