Exclude files/paths in .gitingore during completion

[codegirl-007]

Addressing #119. This will have file completions (triggered with @) ignore files/paths that are listed in .gitignore as well as fall back to using the manual list as well as being able to use both.

Before adding tmp to .gitignore:

After adding tmp to .gitignore:

---

Note

Medium Risk
Introduces a new shell-out git code path and changes discovery/caching behavior for completions; failures or environment differences (missing git, unusual repos) could impact file listing results.

Overview
Updates @ file completion discovery to prefer git-aware scanning: when a .git entry exists, it shells out to git ls-files --cached --others --exclude-standard --deduplicate so .gitignore is respected, then applies the plugin’s configured exclude patterns on top.

Adds a filesystem scan fallback for non-git repos or when the git command fails, tweaks caching behavior in get_files() to always auto-discover when the cache is empty, and updates README docs plus a comprehensive new test suite covering git repo detection, exclude handling, fallback behavior, and caching.

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[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

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[codegirl-007]

Clip of it working with worktrees/non-worktrees.

Screen.Recording.2026-02-22.at.1.55.53.PM.mov

[ThePrimeagen]

i have no idea what the hell is going on here, but i am happy that this works :)