feat: add Antigravity CLI (AGY) as supported installer platform

[bdsoha]

Adds the Antigravity CLI (agy) as its own selectable tool. The existing antigravity entry targets the IDE (.agent/skills, ~/.gemini/antigravity/skills); the CLI is a separate surface that reads workspace skills from the shared .agents/skills standard and its global skills from ~/.gemini/antigravity-cli/skills (per the CLI's /skills command). Different dirs, so the two installs never collide.

Installer is config-driven, so this is one platform-codes.yaml entry plus a test — no installer logic changes.

Verified npm test passes and --list-tools now shows antigravity-cli.

Closes #2440.

Related:

• Missing Antigravity IDE during setup (npx bmad-method install) #1453 — Antigravity missing from the installer picker
• Antigravity/OpenCode Integration: Agent Switching & Missing Workflows #1472 — Antigravity/OpenCode agent switching & missing workflows
• Discussion Google AntiGravity and Gemini 3.0 w/ BMAD? #944 — Google Antigravity + Gemini 3.0 w/ BMAD
• Discussion How to install BMAD in antigravity & Opencode so you can seamlessly work on a project switching between them #1752 — installing BMAD across Antigravity + OpenCode

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 50b3238 and 050f6c0.

📒 Files selected for processing (2)

• test/test-installation-components.js
• tools/installer/ide/platform-codes.yaml

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📝 Walkthrough

Walkthrough

This PR adds a new antigravity-cli platform entry to platform-codes.yaml, specifying its display name, preferred flag, and installer target directories, and adds a corresponding test suite validating native skill installation to .agents/skills.

Changes

Antigravity CLI platform support

Layer / File(s)	Summary
Platform configuration tools/installer/ide/platform-codes.yaml	Adds antigravity-cli platform entry with display name, preferred: false, target_dir: .agents/skills, and global_target_dir: ~/.gemini/antigravity-cli/skills.
Installation test test/test-installation-components.js	Adds Test Suite 6b verifying target_dir, running IdeManager.setup for antigravity-cli, checking installed SKILL.md path, and cleaning up temp fixtures.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• bmad-code-org/BMAD-METHOD#1841: Overlaps with prior native-skills migration work and Antigravity platform installation test coverage.
• bmad-code-org/BMAD-METHOD#1854: Both extend the IDE installer platform registry with analogous IdeManager.setup test suites for new platforms.
• bmad-code-org/BMAD-METHOD#2313: Builds on the shared .agents/skills installer target directory and deduplication model introduced there.

Suggested reviewers: bmadcode

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly states the main change: adding Antigravity CLI (AGY) as a supported installer platform.
Description check	✅ Passed	The description matches the changeset and explains the new Antigravity CLI support and installer paths.
Linked Issues check	✅ Passed	The PR adds AGY as a selectable platform and verifies skill installation, satisfying the linked request.
Out of Scope Changes check	✅ Passed	The changes appear limited to the new platform config entry and test coverage, with no obvious unrelated additions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[augmentcode]

🤖 Augment PR Summary

Summary: Adds Antigravity CLI (AGY) as a new supported installer platform alongside the existing Google Antigravity IDE entry.

Changes:

• Introduces a new antigravity-cli platform entry in platform-codes.yaml with workspace installs targeting .agents/skills and a CLI-specific global skills path.
• Adds a new installer test suite (6b) that validates the new platform config and performs an end-to-end install into a temp project.

Technical Notes: Implementation stays config-driven (no installer logic changes); coverage is added via the integration-style setup test.

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[augmentcode]

Review completed. 1 suggestion posted.

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[augmentcode]

This new test asserts the target_dir, but it doesn’t validate global_target_dir, which is part of the “installs never collide” guarantee described in the PR. Consider also asserting the expected global_target_dir (and/or that it differs from antigravity’s) to catch config drift.

Severity: low

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[bmadcode]

thanks @bdsoha