AI Usage 0.1.4

This release makes the menu bar more compact and provider availability more
accurate.

Show only the percentage beside the provider icon in the menu bar.
Make Left the default and first display option, with Used available
on the right.
Hide a provider only when its claude or codex executable is genuinely
missing from the login-shell path.
Keep installed providers visible when signed out, expired, rate limited, or
temporarily unreachable so their real status remains clear.
Preserve the full used/left meaning in the panel and accessibility label.

Tool discovery is cached with the login-shell environment and rechecks the
resolved executable paths during usage refreshes.

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