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/context/AuthContextValue.ts

@@ -0,0 +1,19 @@
+import { createContext } from 'react';
+
+export interface User {
+  user_id: number;
+  role: string;
+  name?: string;
+  email?: string;
+}
+
+export interface AuthContextType {
+  user: User | null;
+  login: () => Promise<void>;
+  logout: () => void;
+  changePassword: (oldPassword: string, newPassword: string) => Promise<void>;
+  isAuthenticated: boolean;
+  isLoading: boolean;
+}
+
+export const AuthContext = createContext<AuthContextType | undefined>(undefined);