feat: Add role code to system_role.json and update system_users.json creator_id to null

fix: Refactor initialize.py to handle nested children data during initialization

feat: Implement tree structure traversal functions in common_util.py

chore: Update requirements.txt to specify sqlalchemy-crud-plus version and add rich

refactor: Change API endpoints in dept.ts and menu.ts to return tree structure

feat: Add code field to role, dept, and menu interfaces in respective TypeScript files

fix: Update dept and role Vue components to display and handle code field

docs: Add comprehensive project documentation for FastAPI Vue3 Admin

backend/app/scripts/data/system_dept.json

@@ -1,9 +1,58 @@
 [
   {
     "name": "集团总公司",
+    "code": "GROUP001",
     "order": 1,
     "status": true,
     "parent_id": null,
-    "description": "集团总公司"
+    "description": "集团总公司",
+    "children": [
+      {
+        "name": "北京分公司",
+        "code": "BJ001",
+        "order": 1,
+        "status": true,
+        "description": "北京分公司",
+        "children": [
+          {
+            "name": "技术部",
+            "code": "TECH001",
+            "order": 1,
+            "status": true,
+            "description": "技术部"
+          },
+          {
+            "name": "销售部",
+            "code": "SALES001",
+            "order": 2,
+            "status": true,
+            "description": "销售部"
+          }
+        ]
+      },
+      {
+        "name": "上海分公司",
+        "code": "SH001",
+        "order": 2,
+        "status": true,
+        "description": "上海分公司",
+        "children": [
+          {
+            "name": "市场部",
+            "code": "MARKET001",
+            "order": 1,
+            "status": true,
+            "description": "市场部"
+          },
+          {
+            "name": "人事部",
+            "code": "HR001",
+            "order": 2,
+            "status": true,
+            "description": "人事部"
+          }
+        ]
+      }
+    ]
   }
-]
+]

backend/app/scripts/data/system_role.json

@@ -2,6 +2,7 @@
   {
     "name": "管理员角色",
     "data_scope": 4,
+    "code": "ADMIN",
     "status": true,
     "order": 1,
     "description": "管理员",

backend/app/scripts/data/system_users.json

@@ -12,7 +12,7 @@
     "last_login": null,
     "dept_id": 1,
     "description": "管理员",
-    "creator_id": 1
+    "creator_id": null
   },
   {
     "username": "demo",