fix(security): suppress gosec false positives G703 and G118 (#136)

fail2ban/test_helpers.go

@@ -45,6 +45,7 @@ func setupTestLogEnvironment(t *testing.T, testDataFile string) (cleanup func())
 	if err != nil {
 		t.Fatalf("Failed to read test file: %v", err)
 	}
+	// #nosec G703 -- path is constructed from t.TempDir() and a literal string, not user input
 	if err := os.WriteFile(mainLog, data, shared.DefaultFilePermissions); err != nil {
 		t.Fatalf("Failed to create test log: %v", err)
 	}