Improve error handling and debugging#37
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- Add _shellnium_log() for verbose request/response logging via SHELLNIUM_DEBUG=true - Add _check_error() to detect and surface WebDriver error responses to stderr - Replace >/dev/null redirections with _check_error() calls in core functions - Add proper exit codes to find_element, find_elements, and exec_script - Document SHELLNIUM_DEBUG in README.md Configuration section Backward compatible: no behavior change when debug mode is off.
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Summary
SHELLNIUM_DEBUG=truefor verbose request/response logging_check_error()to detect and surface WebDriver error messagesCloses #29
Test plan
SHELLNIUM_DEBUG=true ./demo.shshows request/response logs