fix(antigravity): guard active account removal (#21797)

src/main/antigravity/native-account-service.test.ts

@@ -69,4 +69,15 @@ describe('AntigravityAccountService', () => {
     await expect(service.removeAccount(account.id)).rejects.toThrow('active account')
     await expect(service.selectAccount('missing')).rejects.toThrow('was not found')
   })
+
+  it('protects the active account even before the first list refresh', async () => {
+    const active = backend(first)
+    const account = createSyntheticAntigravityAccount(first)
+    const service = new AntigravityAccountService(
+      createMemoryAntigravityAccountStore([account]),
+      active
+    )
+
+    await expect(service.removeAccount(account.id)).rejects.toThrow('active account')
+  })
 })

src/main/antigravity/native-account-service.ts

@@ -107,7 +107,9 @@ export class AntigravityAccountService {
     if (!accounts.some((account) => account.id === id)) {
       throw new Error('Antigravity account was not found.')
     }
-    if (this.activeAccountId === id) {
+    // Resolve the native credential here too; callers may remove before the first list refresh.
+    const active = await this.knownActiveAccount(accounts)
+    if (active?.id === id || this.activeAccountId === id) {
       throw new Error('Select another Antigravity account before removing the active account.')
     }
     this.store.write(accounts.filter((account) => account.id !== id))