test(cli): cover pure helpers — mapErr, mapClientErr, worseStatus, GPU helpers

[LukasWodka]

The no-infrastructure "free batch" from the coverage audit — pure logic, no production changes.

• mapErr (0% → covered): Ctrl-C (terminal.InterruptErr) → errInteractiveCancelled (the clean-exit-0 seam contract); other errors pass through.
• mapClientErr (0%): cancel → nil; else exit-1 *exitError.
• worseStatus (40%): the Fail>Warn>OK verdict truth-table, both orders.
• machineGPUShort / currentGPUCount / defaultGPUChoice (all 0%): the GPU wizard's pure helpers.

make ci green. Part of the coverage-audit backlog.

🤖 Generated with Claude Code

---

Note

Low Risk
Test-only addition with no runtime or behavioral changes to the CLI.

Overview
Adds internal/cli/pure_helpers_coverage_test.go to lock in behavior of previously under-covered CLI helpers—no production code changes.

Tests document the interactive cancel seam: mapErr maps survey Ctrl-C to errInteractiveCancelled (other errors unchanged); mapClientErr turns cancel into a clean nil and other errors into exit-1 *exitError. worseStatus is exercised across the full Fail > Warn > OK truth table (both argument orders). GPU wizard helpers machineGPUShort, currentGPUCount, and defaultGPUChoice get table-driven cases for capacity checks and default prompt values.

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[LukasWodka]

bugbot run

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

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[saadqbal]

LGTM 👍 Checked each helper against the impl — the worseStatus truth table and the defaultGPUChoice out-of-range→1 edges all line up. Good pure-function coverage.