feat: 重构代码生成模块并优化相关功能

- 重构代码生成模板，统一路由前缀和业务路径规范
- 优化数据库表分页查询性能，支持方言特定实现
- 新增同步数据库差异预览功能
- 调整字段配置界面，支持拖拽排序和批量设置
- 清理旧版示例代码和冗余配置
- 修复权限和路由嵌套路径处理问题
- 优化前端样式和交互细节

backend/app/plugin/module_generator/gencode/templates/python/controller.py.j2

@@ -14,11 +14,9 @@ from app.core.base_schema import BatchSetAvailable
 from .service import {{ class_name }}Service
 from .schema import {{ class_name }}CreateSchema, {{ class_name }}UpdateSchema, {{ class_name }}QueryParam
 
-{% if is_example_style %}
-{{ class_name }}Router = APIRouter(prefix='/{{ module_name }}{% if business_name %}/{{ business_name }}{% endif %}', tags=["{{ function_name }}模块"])
-{% else %}
-{{ class_name }}Router = APIRouter(prefix='/{{ business_name }}', tags=["{{ function_name }}模块"])
-{% endif %}
+# 动态路由容器前缀由 module_xxx 决定（discover: module_xxx -> /xxx）
+# 对齐 module_example/demo：业务路由前缀固定为 /{module_name}
+{{ class_name }}Router = APIRouter(prefix='/{{ module_name }}', tags=["{{ function_name }}模块"])
 
 @{{ class_name }}Router.get(
     "/detail/{id}",

backend/app/plugin/module_generator/gencode/templates/python/schema.py.j2

@@ -49,12 +49,12 @@ class {{ class_name }}QueryParam:
     def __init__(
         self,
         {% for column in columns %}
-        {% if column.query_type == 'LIKE' %}
+        {% if column.is_query and column.query_type == 'LIKE' %}
         {{ column.column_name }}: str | None = Query(None, description="{{ column.column_comment }}"),
         {% endif %}
         {% endfor %}
         {% for column in columns %}
-        {% if column.query_type == 'EQ' and column.column_name not in ['created_time', 'updated_time'] %}
+        {% if column.is_query and column.query_type == 'EQ' and column.column_name not in ['created_time', 'updated_time'] %}
         {{ column.column_name }}: {{ column.python_type }} | None = Query(None, description="{{ column.column_comment }}"),
         {% endif %}
         {% endfor %}
@@ -66,12 +66,12 @@ class {{ class_name }}QueryParam:
         {% endif %}
     ) -> None:
         {% for column in columns %}
-        {% if column.query_type == 'LIKE' %}
+        {% if column.is_query and column.query_type == 'LIKE' %}
         # 模糊查询字段
         self.{{ column.column_name }} = (QueueEnum.like.value, {{ column.column_name }})
-        {% elif column.query_type == 'EQ' and column.column_name not in ['created_time', 'updated_time'] %}
+        {% elif column.is_query and column.query_type == 'EQ' and column.column_name not in ['created_time', 'updated_time'] %}
         # 精确查询字段
-        if {{ column.column_name }}:
+        if {{ column.column_name }} is not None:
             self.{{ column.column_name }} = (QueueEnum.eq.value, {{ column.column_name }})
         {% endif %}
         {% endfor %}