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- Move `browser-config` from 'Modules In Test' to active modules
- Refactor browser handling functions for better error handling:
- Introduce `cj/--do-apply-browser-choice` and
- `cj/--do-choose-browser` Return status symbols for success and
- error cases Add comprehensive unit tests in
- `tests/test-browser-config.el` Focus on internal `cj/--do-*`
- functions and file I/O using temp files Validate return values and
- ensure isolated tests with setup/teardown functions Ensure
- consistent handling of browser configurations and improve
- initialization logic
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