Click-spinner is a minimal Python library that provides a terminal spinner interface for indicating progress during long-running operations where the duration is unknown. The core functionality resides in the Spinner class, which runs a background thread to animate a sequence of characters (spinner frames) while the main thread executes work. The spinner automatically detects whether output is redirected and respects terminal capabilities, with options to force display, disable the spinner, or emit a beep upon completion. Designed as a context manager, it integrates seamlessly with Click-based CLI applications but has no framework dependencies, relying solely on Python's standard library. The project includes comprehensive test coverage verifying behavior under various conditions like output redirection, disabling, and exception handling, supported by CI workflows testing across Python 3.8-3.14.