* Cover code previously marked `pragma: no cover`

Tests for Ctrl+C in `run_cmds()`, running without click installed, and the debugging `__repr__` methods.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* Enabled ruff UP rule

* More type annotations

* Consistent logger spec

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Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>