fix(antigravity): discover global skills from the CLI configuration root (#24592)

src/main/skills/antigravity-skill-discovery.test.ts

@@ -0,0 +1,48 @@
+import { mkdtemp, mkdir, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join, posix, win32 } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { buildSkillDiscoverySources, discoverSkills } from './discovery'
+
+describe('Antigravity global skill discovery', () => {
+  it('attributes a skill in the CLI configuration directory to Antigravity', async () => {
+    const home = await mkdtemp(join(tmpdir(), 'orca-agy-skills-'))
+    try {
+      const root = join(home, '.gemini', 'config', 'skills')
+      const directory = join(root, 'review')
+      await mkdir(directory, { recursive: true })
+      await writeFile(
+        join(directory, 'SKILL.md'),
+        '---\nname: review\ndescription: Review a change.\n---\n'
+      )
+      const result = await discoverSkills({
+        homeDir: home,
+        includeCwd: false,
+        providerRootOverrides: {}
+      })
+      expect(result.skills.find((skill) => skill.name === 'review')?.rootPaths).toContain(root)
+      expect(result.sources.find((source) => source.id === 'home-antigravity')).toMatchObject({
+        path: root,
+        owner: 'antigravity',
+        exists: true
+      })
+    } finally {
+      await rm(home, { recursive: true, force: true })
+    }
+  })
+
+  it.each([
+    { pathApi: posix, home: '/home/remote', expected: '/home/remote/.gemini/config/skills' },
+    {
+      pathApi: win32,
+      home: 'C:\\Users\\remote',
+      expected: 'C:\\Users\\remote\\.gemini\\config\\skills'
+    }
+  ])('uses the execution host path format: $expected', ({ pathApi, home, expected }) => {
+    const roots = buildSkillDiscoverySources({ homeDir: home, pathApi, includeCwd: false })
+    expect(roots.find((root) => root.id === 'home-antigravity')).toMatchObject({
+      path: expected,
+      owner: 'antigravity'
+    })
+  })
+})

src/main/skills/discovery.test.ts

@@ -399,7 +399,7 @@ describe('skill discovery', () => {
     expect(rootPaths).toContain('/workspace/current/.claude/skills')
   })
 
-  it('scans each provider home skill root that npx skills --global writes to', () => {
+  it('scans each provider home skill root', () => {
     const roots = buildSkillDiscoverySources({
       homeDir: '/home/test',
       cwd: '/workspace/current'
@@ -414,7 +414,7 @@ describe('skill discovery', () => {
         '/home/test/.omp/agent/skills',
         '/home/test/.hermes/skills',
         '/home/test/.gemini/skills',
-        '/home/test/.gemini/antigravity/skills',
+        '/home/test/.gemini/config/skills',
         '/home/test/.cursor/skills',
         '/home/test/.factory/skills',
         '/home/test/.continue/skills',

src/main/skills/skill-discovery-sources.ts

@@ -144,7 +144,7 @@ export function buildSkillDiscoverySources(
     source(
       'home-antigravity',
       'Antigravity home',
-      pathApi.join(home, '.gemini', 'antigravity', 'skills'),
+      pathApi.join(home, '.gemini', 'config', 'skills'),
       'home',
       ['agent-skills'],
       'antigravity'