[Feature Request] Add support for using AugmentCode (AugmentCode extension or Auggie CLI tool)

[engels74]

Feature Request: Support AugmentCode via VS Code extension and/or Auggie CLI

Summary

Currently Spec-Kit supports Claude Code, Gemini CLI, and GitHub Copilot as coding agents.
This request is to add support for AugmentCode through either:

• AugmentCode VS Code extension (similar to how GitHub Copilot is supported)
• Auggie CLI (similar to how Claude Code/Gemini CLI are supported)
• Both options for maximum flexibility

Why

• AugmentCode is an AI-powered coding platform focused on enterprise workflows, deep codebase understanding, and autonomous agents.
• It offers both IDE integration (VS Code extension) and CLI tooling (Auggie) for different developer preferences.
• Adding support would align with Spec-Kit's technology independence goals and provide organizations more choice in AI development workflows.

Expected Behavior

• specify init <project> --ai augment should recognize AugmentCode as a supported agent
• Spec-Kit should scaffold projects with AugmentCode integration and expose /specify, /plan, and /tasks commands
• Support either the VS Code extension workflow or Auggie CLI workflow (or both)

References

• AugmentCode: https://www.augmentcode.com/
• VS Code Extension: https://marketplace.visualstudio.com/items?itemName=augment.vscode-augment
• Auggie CLI: https://docs.augmentcode.com/cli/overview
• AugmentCode docs: https://docs.augmentcode.com/introduction

Impact

This would expand Spec-Kit's AI tool support by enabling a platform specifically designed for large codebases and professional software engineering workflows.

[workdocyeye]

I do think it should support augment code

[hungthai1401]

I can see Augment Code doesn't support custom slash commands but Auggie can. I've created a PR to adapt Auggie at #137

[localden]

Latest release of Specify supports Auggie! This was consolidated in #451 and created by @hungthai1401