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.

scripts/pre-commit-hooks/block-data-backups-commit.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+
+# Prevent committing any files under data/backups/ accidentally
+staged_files=$(git diff --cached --name-only || true)
+if [ -z "$staged_files" ]; then
+  exit 0
+fi
+
+for f in $staged_files; do
+  case "$f" in
+    data/backups/*)
+      echo "Error: Committing files under data/backups/ is blocked. Remove them from the commit and re-run." >&2
+      exit 1
+      ;;
+  esac
+done
+
+exit 0