fix: issue when YSU_MODE=all explicitly set

[MichaelAquilina]

Fixes #154

[Copilot]

Pull request overview

This PR adjusts alias suggestion behavior in YSU_MODE=ALL to avoid recommending less-specific aliases when the user is already using a more-specific alias, addressing the incorrect hinting described in #154.

Changes:

• Add logic in _check_aliases (ALL mode) to detect the “best coverage” alias already used by the typed command and suppress less-specific suggestions.
• Add zunit tests covering the new ALL-mode specificity behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
you-should-use.plugin.zsh	Refines ALL-mode alias recommendation logic to avoid less-specific alias suggestions when a more-specific alias is already in use.
tests/test_aliases.zunit	Adds regression tests for ALL-mode specificity filtering behavior.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.