fix: replace rg with fd to search empty directory

[yawnbright]

What does this PR do?

resolve #10637

How did you verify your code works?

Why is it wrong now?

When we type '@', it will trigger File.search, which use ripgrep to retrieve all the files and directorys.

packages/opencode/src/file/index.ts

The command be excuted is rg --files ... eventually, and it only list files, we later use these files to extrapolate the directorys. The key point is that rg only list files.

How I resolved it?

Use fd to replace rg

I have verified it in

• OS: macOS 15.6 / win11
• OpenCode: 1.1.36

[github-actions]

Hey! Your PR title fix empty directory cannot be retrieved by '@' doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

No duplicate PRs found