## Fixes
1. **Test visibility**: Added is_unknown_verb_option_error to mod tests
use super import list so tests can call the detector function.
2. **Detector precision**: The verb-option detector was incorrectly matching
'unknown option: --foo' (generic form missing a verb). Tightened the
detector to require a non-empty, space-free verb between 'unknown '
and ' option:'. Now correctly matches only verb-qualified rejections like:
- 'unknown system-prompt option: --json'
- 'unknown export option: --bogus'
## Test Results
- All 180 library tests pass
- 4 new #248-specific classifier tests pass:
- classify_error_kind_covers_verb_qualified_unknown_options_248
- is_unknown_verb_option_error_only_matches_verb_qualified_shape_248
- No regressions (all existing classifier paths still classifying correctly)
## Status
#248 implementation is complete and tested. Branch is ready for code review
before merging to main. The implementation extends the classifier to handle
verb-qualified unknown-option rejections across all subcommands (system-prompt,
export, dump-manifests, etc.) plus unknown subcommand/slash-command rejections
at the top level.
6c09172b9f