fix: avoid powershell browser opener on wsl

[lusu007]

Pull Request

Description

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 💥 Breaking change
• ♻️ Refactoring
• 📚 Documentation
• 🔧 Chore

Related Issues

• Fixes #

Testing

• Unit tests pass
• Manual testing completed
• New tests added for new functionality

Checklist

• I have performed a self-review of my own code
• Tests have been added/updated and pass (if needed)
• Documentation has been updated (if needed)

[chatgpt-codex-connector]

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Reviewed commit: ba31aedda1

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[Copilot]

Pull request overview

Introduces an in-repo browser opener to avoid PowerShell-based launchers on WSL (which can emit spurious console-encoding errors), replacing the previous external dependency and wiring the login flow to use it.

Changes:

• Add internal/browser.OpenURL with OS/WSL-specific opener selection logic (prefers cmd.exe on WSL).
• Add unit tests covering opener selection on Linux/WSL.
• Remove github.com/pkg/browser from dependencies and update imports; minor .gitignore update.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
internal/browser/open.go	New cross-platform URL opener with WSL-specific behavior.
internal/browser/open_test.go	New unit tests validating opener selection logic.
cmd/grounds/commands/login.go	Switch login flow to use internal/browser.OpenURL.
go.mod	Drop github.com/pkg/browser; promote huh to direct dependency.
go.sum	Remove sums associated with dropped deps / tidy.
.gitignore	Ignore .codex directory.

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