Add Antigravity install instructions and global auto-detection hints

README.md

@@ -270,6 +270,15 @@ cp -r dist/grok/.grok/skills/* ~/.grok/skills/
 
 > Prefer `npx impeccable install --providers=grok` or `grok plugin install pbakaus/impeccable#plugin --trust` so the design hook installs too. Project hooks need `/hooks-trust` (or `--trust`) once per folder.
 
+**Google Antigravity:**
+```bash
+# Project-specific
+cp -r dist/antigravity/.agent your-project/
+
+# Or global (applies to all projects)
+cp -r dist/antigravity/.agent/skills/* ~/.agent/skills/
+```
+
 ## Usage
 
 Once installed, every command runs through the single `/impeccable` skill:

cli/bin/commands/skills.mjs

@@ -92,6 +92,11 @@ const HOME_SKILLS_DIR_OVERRIDES = {
 // .agents/skills, so ~/.codex maps to the .agents bundle variant.
 const GLOBAL_HARNESS_HINTS = [
   { home: '.agent', provider: '.agent' },
+  // Antigravity nests under ~/.gemini/ too, so any of these also trips the
+  // .gemini hint above (harmless double-detection — both get pre-selected).
+  { home: '.gemini/antigravity', provider: '.agent' },
+  { home: '.gemini/antigravity-cli', provider: '.agent' },
+  { home: '.gemini/antigravity-ide', provider: '.agent' },
   { home: '.claude', provider: '.claude' },
   { home: '.codex', provider: '.agents' },
   { home: '.cursor', provider: '.cursor' },