[Antigravity] antigravity.md adapter audit — parse_mode invocation missing, task_boundary/update_context conflict

[JeremyDev87]

Summary

packages/rules/.ai-rules/adapters/antigravity.md lacks critical codingbuddy MCP integration sections. Unlike cursor.md, it has no parse_mode invocation mechanism (no mode keyword detection rule), no context document management guidance, and its task_boundary documentation conflicts with the update_context MCP workflow. A full documentation audit is needed to align antigravity.md with the codingbuddy integration standard.

Known Gaps (from audit)

Category	Gap	Severity
MCP setup	No CODINGBUDDY_PROJECT_ROOT env var guidance (see #618)	High
Mode keywords	No mechanism to auto-invoke parse_mode on PLAN/ACT/EVAL/AUTO	High
Skills	No get_skill MCP tool workflow (see #619)	Medium
Context doc	No update_context call guidance at mode completion	High
Parallel agents	No fallback pattern for dispatchReady.parallelAgents[] (see #620)	Medium
task_boundary	Conflict with update_context — ordering undefined (see #620)	Medium
Language	No guidance on how codingbuddy.config.json language affects Antigravity	Low
Limitations	No section on what Claude Code features are unavailable	Low

Root Cause

• packages/rules/.ai-rules/adapters/antigravity.md: Incomplete — only documents Antigravity-specific tools without codingbuddy MCP integration
• .antigravity/rules/instructions.md: References .ai-rules/ by path but provides no MCP tooling bridge
• No systematic audit was performed when the adapter was originally written

Expected Outcome

A revised antigravity.md that:

1. Covers all 8 gap categories above
2. Is aligned with cursor.md structure as the reference implementation
3. Clearly marks Antigravity-specific sections (e.g., task_boundary) vs shared codingbuddy workflow
4. Documents known limitations vs Claude Code feature parity

Affected Files

• packages/rules/.ai-rules/adapters/antigravity.md (primary)
• .antigravity/rules/instructions.md (may need cross-reference update)

Reference

• Cursor adapter audit: [Cursor] cursor.md adapter documentation audit — verify all documented patterns against actual behavior #609
• OpenCode adapter audit: [OpenCode] opencode.md + opencode-skills.md documentation audit — hardcoded language, missing tools, unverified options #613
• Kiro adapter audit: [Kiro] kiro.md adapter is a stub — complete MCP integration documentation needed #617
• packages/rules/.ai-rules/adapters/cursor.md (complete reference implementation)