docs: improve CONTRIBUTING.md to more closely match CI execution#963

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schlich wants to merge 3 commits intonushell:mainfrom

schlich:docs/improve-contributing

Commits on Oct 14, 2025

docs: improve CONTRIBUTING.md with stricter CI check commands

schlich
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claude
committed

Commits on Oct 21, 2025

Remove unnecessary check after `cargo fmt` instructions

schlich
and
sholderbach
authored

Commits on Oct 22, 2025

docs: clarify CI checks and update formatting/lint/test commands in CONTRIBUTING.md
schlich
committed