feat: 按 doc_id 重组 ansible/files 与验证框架

- ansible/files 改为与文档 XX-YY 对齐的目录结构，更新相关 playbook 路径
- 新增 scripts/verify.sh 与 ansible/playbooks/verify/*.yml，移除单体 verify-matrix.yml
- 补充 docs/00-02 矩阵状态、00-05 验证框架与流程、00-04 环境与 ylc65 工作机说明
- 增加 k3s 存储准备、Longhorn、local-path 等 playbook 与辅助脚本

Made-with: Cursor

ansible/playbooks/k3s-init-and-install.yml

@@ -1,4 +1,33 @@
 ---
+- name: Verify /storage is a separate mount (optional)
+  hosts: k3s_nodes
+  become: true
+  tasks:
+    - name: Check / and /storage mount sources
+      when: k3s_verify_storage_mount | default(false) | bool
+      block:
+        - name: Get mount source for /
+          ansible.builtin.command: findmnt -n -o SOURCE /
+          register: mnt_root
+          changed_when: false
+
+        - name: Get mount source for /storage
+          ansible.builtin.command: findmnt -n -o SOURCE /storage
+          register: mnt_storage
+          changed_when: false
+          failed_when: false
+
+        - name: Assert /storage is mounted on a different device than /
+          ansible.builtin.assert:
+            that:
+              - mnt_storage.rc == 0
+              - (mnt_root.stdout | trim | length) > 0
+              - (mnt_storage.stdout | trim | length) > 0
+              - (mnt_root.stdout | trim) != (mnt_storage.stdout | trim)
+            fail_msg: >-
+              /storage must be a mount point on a block device different from /.
+              See docs/00-04-部署环境说明.md and docs/01-06-节点初始化-ansible-实践.md
+
 - name: Init base system
   hosts: k3s_nodes
   become: true