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/api/system.ts

@@ -0,0 +1,44 @@
+import client from './client';
+
+export interface UpdateInfo {
+  available: boolean;
+  latest_version: string;
+  changelog_url: string;
+}
+
+export interface Notification {
+  id: string;
+  type: 'info' | 'success' | 'warning' | 'error';
+  title: string;
+  message: string;
+  read: boolean;
+  created_at: string;
+}
+
+export const checkUpdates = async (): Promise<UpdateInfo> => {
+  const response = await client.get('/system/updates');
+  return response.data;
+};
+
+export const getNotifications = async (unreadOnly = false): Promise<Notification[]> => {
+  const response = await client.get('/notifications', { params: { unread: unreadOnly } });
+  return response.data;
+};
+
+export const markNotificationRead = async (id: string): Promise<void> => {
+  await client.post(`/notifications/${id}/read`);
+};
+
+export const markAllNotificationsRead = async (): Promise<void> => {
+  await client.post('/notifications/read-all');
+};
+
+export interface MyIPResponse {
+  ip: string;
+  source: string;
+}
+
+export const getMyIP = async (): Promise<MyIPResponse> => {
+  const response = await client.get<MyIPResponse>('/system/my-ip');
+  return response.data;
+};