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/types/test-shims.d.ts

@@ -0,0 +1,9 @@
+// Test-only type shims to satisfy strict type-checking in CI
+// Properly type the default export from @testing-library/user-event
+declare module '@testing-library/user-event' {
+  import type { UserEvent } from '@testing-library/user-event/dist/types/setup/setup'
+  const userEvent: UserEvent
+  export default userEvent
+  export { userEvent }
+  export type { UserEvent }
+}

frontend/src/types/testing-library-user-event.d.ts

@@ -0,0 +1,5 @@
+// ambient module declaration to satisfy typescript in editor environment
+declare module '@testing-library/user-event' {
+  const userEvent: unknown;
+  export default userEvent;
+}