feat(docs): add images to claim-my-node documentation

Add visual guidance images for the node claiming process:
- Publisher selection interface
- Claim process stage 1 interface
- Images added to both English and Chinese versions
- Dark/light mode support for better accessibility

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: snomiao

images/registry/claim-my-node/choose-a-publisher.png

@@ -27,11 +27,33 @@ To claim your nodes:
 
 3. **Select a Publisher**: Choose the publisher under which you want to claim the node. this step will redirect you to the claim page.
 
+<img
+  className="block dark:hidden"
+  src="/images/registry/claim-my-node/choose-a-publisher.png"
+  alt="Choose a Publisher - Light Mode"
+/>
+<img
+  className="hidden dark:block"
+  src="/images/registry/claim-my-node/choose-a-publisher.png"
+  alt="Choose a Publisher - Dark Mode"
+/>
+
 To claim the node under the choosed publisher, follow these steps:
 
 1. **Review Node Information:**
    - Check the node details, including the name, repository link, and publisher status as shown on the screen.
 
+<img
+  className="block dark:hidden"
+  src="/images/registry/claim-my-node/claim-a-sample-custom-node-under-my-publisher-stage-1.png"
+  alt="Claim Node Process Stage 1 - Light Mode"
+/>
+<img
+  className="hidden dark:block"
+  src="/images/registry/claim-my-node/claim-a-sample-custom-node-under-my-publisher-stage-1.png"
+  alt="Claim Node Process Stage 1 - Dark Mode"
+/>
+
 2. **GitHub Authentication:**
    - Click the "Continue with GitHub" button to start the authentication process. Ensure you're logged in to the correct GitHub account with admin rights to the repository.
 

images/registry/claim-my-node/claim-a-sample-custom-node-under-my-publisher-stage-1.png

@@ -27,11 +27,33 @@ title: "认领我的节点"
 
 3. **选择发布者**：选择您想要用来认领节点的发布者。此步骤将重定向您到在选定发布者下的认领页面。
 
+<img
+  className="block dark:hidden"
+  src="/images/registry/claim-my-node/choose-a-publisher.png"
+  alt="选择发布者 - 浅色模式"
+/>
+<img
+  className="hidden dark:block"
+  src="/images/registry/claim-my-node/choose-a-publisher.png"
+  alt="选择发布者 - 深色模式"
+/>
+
 要在选定的发布者下认领节点，请按照以下步骤操作：
 
 1. **查看节点信息：**
    - 检查节点详细信息，包括屏幕上显示的名称、仓库链接和发布者状态。
 
+<img
+  className="block dark:hidden"
+  src="/images/registry/claim-my-node/claim-a-sample-custom-node-under-my-publisher-stage-1.png"
+  alt="认领节点流程第一步 - 浅色模式"
+/>
+<img
+  className="hidden dark:block"
+  src="/images/registry/claim-my-node/claim-a-sample-custom-node-under-my-publisher-stage-1.png"
+  alt="认领节点流程第一步 - 深色模式"
+/>
+
 2. **GitHub 身份验证：**
    - 点击"使用 GitHub 继续"按钮开始身份验证过程。确保您已登录到对该仓库具有管理员权限的正确 GitHub 账户。