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.

backend/internal/database/database_test.go

@@ -0,0 +1,29 @@
+package database
+
+import (
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestConnect(t *testing.T) {
+	// Test with memory DB
+	db, err := Connect("file::memory:?cache=shared")
+	assert.NoError(t, err)
+	assert.NotNil(t, db)
+
+	// Test with file DB
+	tempDir := t.TempDir()
+	dbPath := filepath.Join(tempDir, "test.db")
+	db, err = Connect(dbPath)
+	assert.NoError(t, err)
+	assert.NotNil(t, db)
+}
+
+func TestConnect_Error(t *testing.T) {
+	// Test with invalid path (directory)
+	tempDir := t.TempDir()
+	_, err := Connect(tempDir)
+	assert.Error(t, err)
+}