[virtualization] Windows VM VNC mouse pointer misalignment — add a USB tablet input device

[jing2uo]

Summary

• 新增 KB（中英双语）：解决通过 ACP 创建的 Windows VM 在 VNC 控制台访问时鼠标无法准确对准界面元素的问题。
• 根因分析：KubeVirt 默认暴露 PS/2 模拟鼠标（相对偏移），VNC 客户端发送的是绝对坐标，到 Windows 这一段缺少双向同步加上系统默认的"提高指针精确度"加速曲线，误差累积导致光标漂移。
• 解决方案：在 spec.template.spec.domain.devices.inputs 加 USB tablet（绝对坐标），含 kubectl patch 命令、完整 YAML 片段、为新 VM 模板默认烘焙的建议；并解释为何用 bus: usb 而非 bus: virtio（裸装 Windows 没有 virtio-input 驱动）。
• 上游参考：kubevirt/kubevirt#2392；OCP 模板默认就带这个配置，是 ACP 模板应当对齐的参考。

Files

• docs/en/solutions/Windows_VM_VNC_mouse_pointer_misalignment_add_USB_tablet_input.md
• docs/zh/solutions/Windows_VM_VNC_mouse_pointer_misalignment_add_USB_tablet_input.md

Test plan

• 在一台未带 tablet 的 Windows VM 上复现 VNC 鼠标错位
• 按 KB 中的 kubectl patch 打补丁后 virtctl restart，确认 virsh dumpxml 中出现 <input type='tablet' bus='usb'/>
• Windows 设备管理器中识别到"符合 HID 标准"的 tablet 设备，VNC 控制台光标与主机指针一比一同步
• CI 自动生成 KB ID 写入 frontmatter

🤖 Generated with Claude Code

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Reviewing files that changed from the base of the PR and between 346ca0a and 5c500b3.

📒 Files selected for processing (2)

• docs/en/solutions/Windows_VM_VNC_mouse_pointer_misalignment_add_USB_tablet_input.md
• docs/zh/solutions/Windows_VM_VNC_mouse_pointer_misalignment_add_USB_tablet_input.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch kb/windows-vm-vnc-tablet-input

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