fix(shell): correct /usage remaining quota display

[wbxl2000]

Summary

Fixes #2019.

This updates /usage so the displayed % left label, progress bar fill, and warning color all use the remaining quota ratio consistently. High remaining quota now renders as green/full, while near-exhausted quota renders yellow or red.

Thanks to #2039, #2046, and #1411 for the related reports and proposed fixes that helped converge on the behavior here.

Changes

• Render the quota bar using remaining quota instead of used quota.
• Flip _ratio_color thresholds to treat low remaining quota as dangerous.
• Clamp unusual API values so over-used or negative-used rows do not overfill the bar.
• Add regression tests for remaining quota colors, progress fill, zero-limit, over-used, and reset hint rendering.
• Add release-note entries in English and Chinese changelogs.

Tests

• uv run ruff check src/kimi_cli/ui/shell/usage.py tests/ui/test_usage.py
• uv run ruff format --check src/kimi_cli/ui/shell/usage.py tests/ui/test_usage.py
• uv run pytest tests/ui/test_usage.py
• make check-kimi-cli

Note: make check-kimi-cli exits 0. ty check is non-blocking in the Makefile and still reports existing repo-wide diagnostics unrelated to this change.

[wbxl2000]

[wbxl2000]

@codex

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 🎉

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[wbxl2000]

@codex

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Codex Review: Didn't find any major issues. Breezy!

ℹ️ About Codex in GitHub

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