docs(google): remove stale plugin references

.github/labeler.yml

@@ -198,14 +198,6 @@
   - changed-files:
       - any-glob-to-any-file:
           - "extensions/diagnostics-otel/**"
-"extensions: google-antigravity-auth":
-  - changed-files:
-      - any-glob-to-any-file:
-          - "extensions/google-antigravity-auth/**"
-"extensions: google-gemini-cli-auth":
-  - changed-files:
-      - any-glob-to-any-file:
-          - "extensions/google-gemini-cli-auth/**"
 "extensions: llm-task":
   - changed-files:
       - any-glob-to-any-file:

docs/cli/index.md

@@ -676,7 +676,7 @@ Surfaces:
 Notes:
 
 - Data comes directly from provider usage endpoints (no estimates).
-- Providers: Anthropic, GitHub Copilot, OpenAI Codex OAuth, plus Gemini CLI/Antigravity when those provider plugins are enabled.
+- Providers: Anthropic, GitHub Copilot, OpenAI Codex OAuth, plus Gemini CLI via the bundled `google` plugin and Antigravity where configured.
 - If no matching credentials exist, usage is hidden.
 - Details: see [Usage tracking](/concepts/usage-tracking).
 

docs/zh-CN/cli/index.md

@@ -589,7 +589,7 @@ Gmail Pub/Sub 钩子设置 + 运行器。参见 [/automation/gmail-pubsub](/auto
 说明：
 
 - 数据直接来自提供商用量端点（非估算）。
-- 提供商：Anthropic、GitHub Copilot、OpenAI Codex OAuth，以及启用这些提供商插件时的 Gemini CLI/Antigravity。
+- 提供商：Anthropic、GitHub Copilot、OpenAI Codex OAuth，以及通过捆绑 `google` 插件提供的 Gemini CLI 和已配置的 Antigravity。
 - 如果没有匹配的凭证，用量会被隐藏。
 - 详情：参见[用量跟踪](/concepts/usage-tracking)。