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/ImportBanner.tsx

@@ -0,0 +1,30 @@
+interface Props {
+  session: { id: string }
+  onReview: () => void
+  onCancel: () => void
+}
+
+export default function ImportBanner({ session, onReview, onCancel }: Props) {
+  return (
+    <div className="bg-yellow-900/20 border border-yellow-600 text-yellow-300 px-4 py-3 rounded mb-6 flex items-center justify-between">
+      <div>
+        <div className="font-medium">Pending Import Session</div>
+        <div className="text-sm text-yellow-400/80">Session ID: {session.id}</div>
+      </div>
+      <div className="flex gap-3">
+        <button
+          onClick={onReview}
+          className="px-3 py-1 bg-yellow-600 hover:bg-yellow-500 text-black rounded text-sm font-medium"
+        >
+          Review Changes
+        </button>
+        <button
+          onClick={onCancel}
+          className="px-3 py-1 bg-gray-800 hover:bg-gray-700 text-yellow-300 border border-yellow-700 rounded text-sm font-medium"
+        >
+          Cancel
+        </button>
+      </div>
+    </div>
+  )
+}