chore: Apply modern Go idioms and perform code cleanup

This commit introduces a series of small refactorings and style fixes across the codebase to improve consistency and leverage modern Go features.

Key changes include:
- Adopting the Go 1.22 `reflect.TypeFor` generic function.
- Replacing `interface{}` with the `any` type alias for better readability.
- Using the explicit `http.NoBody` constant for HTTP requests.
- Updating octal literals for file permissions to the `0o` prefix syntax.
- Standardizing comment formatting and fixing minor typos.
- Removing redundant blank lines and organizing imports.

internal/exporters/factory_test.go

@@ -164,7 +164,6 @@ func TestFactory_CreateExporter_CaseInsensitive(t *testing.T) {
 	for _, tc := range testCases {
 		t.Run(tc.format, func(t *testing.T) {
 			exporter, err := factory.CreateExporter(tc.format)
-
 			if err != nil {
 				t.Fatalf("Unexpected error for format '%s': %v", tc.format, err)
 			}