diff --git a/README.md b/README.md
index 660e337..5672e5b 100644
--- a/README.md
+++ b/README.md
@@ -1,16 +1,34 @@
 # world_snapshot 模块
 
-世界状态快照模块，聚合世界（world）、场景（scene）、实体（entity）当前状态生成快照，支持查询与恢复。
+世界状态快照模块（W-03）：聚合世界（world）、场景（scene）、实体（entity）当前状态生成
+快照，支持快照查询与恢复，恢复时联动 world 表状态（经 world 模块 set_world_mode 契约）。
 
 ## 功能
-- 世界快照表 `world_snapshot` 的 CRUD
+- 世界快照表 `world_snapshot` 的 CRUD（create/get/list/update/delete）
 - `create_snapshot`：聚合 world/scene/entity 当前状态写入 `snapshot_json`
-- `restore_snapshot`：读取并校验快照 JSON，恢复状态（基础实现：校验 + 状态标记）
+- `restore_snapshot`：读取并校验快照 JSON，标记已恢复，联动 world 状态
 - 下拉接口：世界列表、快照类型、快照状态
 
 ## 数据表
-- `world_snapshot`（models/world_snapshot.json）
+- `world_snapshot`（models/world_snapshot.json 四段式）
+- 编码字典：`snapshot_type`（full/incremental）、`snapshot_status`（active/restored/invalid）
+
+## 目录结构
+```
+world_snapshot/
+├── world_snapshot/        # Python 包（init.py 实现 + __init__.py 导出）
+├── wwwroot/               # index.ui / menu.ui / api/*.dspy
+├── models/                # world_snapshot.json 表定义
+├── json/                  # world_snapshot.json CRUD 定义
+├── init/                  # data.json 编码字典种子
+├── scripts/               # load_path.py RBAC 注册
+├── skill/SKILL.md         # 模块技能文档
+├── pyproject.toml
+├── build.sh               # 四步安装（xls2ddl → ddl → crud ui → symlink）
+└── README.md
+```
 
 ## 集成
-- 通过 `load_world_snapshot()` 挂载到宿主应用
+- 通过 `load_world_snapshot()` 挂载到宿主应用（`from world_snapshot.init import load_world_snapshot`）
 - 库名经 `ServerEnv().get_module_dbname('world_snapshot')` 获取，禁止硬编码
+- 构建：`bash build.sh`（安装 xls2ddl、生成 DDL、生成 CRUD UI、链接 wwwroot）
diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..078ae1c
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# world_snapshot module build script (four-step install).
+# 1) install xls2ddl  2) models json -> mysql.ddl.sql  3) json -> wwwroot CRUD ui
+# 4) symlink module wwwroot into the main app wwwroot.
+set -e
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+MOD="world_snapshot"
+
+SAGE_ROOT=""
+for candidate in "$SCRIPT_DIR/../.." "$HOME/repos/sage" "$HOME/sage"; do
+    if [ -d "$candidate/wwwroot" ] && [ -d "$candidate/py3/bin" ]; then
+        SAGE_ROOT="$(cd "$candidate" && pwd)"
+        break
+    fi
+done
+
+echo "[world_snapshot] step 1/4: install xls2ddl"
+pip install -q xls2ddl 2>/dev/null || echo "  xls2ddl install skipped (already present)"
+
+echo "[world_snapshot] step 2/4: generate mysql.ddl.sql from models/"
+if [ -d "$SCRIPT_DIR/models" ]; then
+    json2ddl mysql "$SCRIPT_DIR/models" > "$SCRIPT_DIR/models/mysql.ddl.sql" 2>/dev/null \
+        || python3 -m xls2ddl.json2ddl mysql "$SCRIPT_DIR/models" > "$SCRIPT_DIR/models/mysql.ddl.sql"
+fi
+
+echo "[world_snapshot] step 3/4: generate CRUD ui from json/"
+if [ -d "$SCRIPT_DIR/json" ]; then
+    (cd "$SCRIPT_DIR" && PYTHONPATH="$SCRIPT_DIR" python3 -m xls2ddl.xls2crud \
+        -m "$SCRIPT_DIR/models" -o "$SCRIPT_DIR/wwwroot" "$MOD" json/*.json) \
+        || echo "  xls2crud skipped (generate custom ui manually)"
+fi
+
+echo "[world_snapshot] step 4/4: symlink module wwwroot into app wwwroot"
+if [ -n "$SAGE_ROOT" ] && [ -d "$SAGE_ROOT/wwwroot" ]; then
+    ln -sfn "$SCRIPT_DIR/wwwroot" "$SAGE_ROOT/wwwroot/$MOD"
+    if [ -d "$SCRIPT_DIR/wwwroot/world_snapshot" ]; then
+        ln -sfn "$SCRIPT_DIR/wwwroot/world_snapshot" "$SAGE_ROOT/wwwroot/$MOD/world_snapshot"
+    fi
+    echo "  linked $SAGE_ROOT/wwwroot/$MOD"
+else
+    echo "  sage root not found, skip symlink"
+fi
+
+echo "[world_snapshot] build.sh done"
diff --git a/init/data.json b/init/data.json
index 637ce0a..50437e3 100644
--- a/init/data.json
+++ b/init/data.json
@@ -1,13 +1,21 @@
 {
     "appcodes": [
-        {"parentid": "snapshot_type", "parentname": "快照类型", "items": [
-            {"k": "0", "v": "手动"},
-            {"k": "1", "v": "自动"}
-        ]},
-        {"parentid": "snapshot_status", "parentname": "快照状态", "items": [
-            {"k": "0", "v": "正常"},
-            {"k": "1", "v": "已恢复"},
-            {"k": "2", "v": "已作废"}
-        ]}
+        {
+            "parentid": "snapshot_type",
+            "parentname": "快照类型",
+            "items": [
+                {"k": "full", "v": "全量快照"},
+                {"k": "incremental", "v": "增量快照"}
+            ]
+        },
+        {
+            "parentid": "snapshot_status",
+            "parentname": "快照状态",
+            "items": [
+                {"k": "active", "v": "有效"},
+                {"k": "restored", "v": "已恢复"},
+                {"k": "invalid", "v": "失效"}
+            ]
+        }
     ]
 }
diff --git a/json/world_snapshot.json b/json/world_snapshot.json
index 4f7acff..e8aa393 100644
--- a/json/world_snapshot.json
+++ b/json/world_snapshot.json
@@ -1,21 +1,31 @@
 {
     "tblname": "world_snapshot",
+    "alias": "world_snapshot",
     "title": "世界快照",
     "params": {
         "sortby": ["created_at desc"],
-        "data_filter": {
-            "AND": [
-                {"field": "world_id", "op": "=", "var": "world_id"},
-                {"field": "snapshot_date", "op": "=", "var": "snapshot_date"}
-            ]
+        "record_toolbar": [{
+            "label": "恢复",
+            "actiontype": "dspy",
+            "url": "{{entire_url('../api/restore_snapshot.dspy')}}",
+            "options": {"icon": "undo", "cwidth": 16, "cheight": 9}
+        }],
+        "browserfields": {
+            "exclouded": ["id", "snapshot_json"],
+            "alters": {
+                "world_id": {"uitype": "code", "dataurl": "{{entire_url('../api/get_search_world.dspy')}}"},
+                "snapshot_type": {"uitype": "code", "dataurl": "{{entire_url('../api/get_search_snapshot_type.dspy')}}"},
+                "status": {"uitype": "code", "dataurl": "{{entire_url('../api/get_search_status.dspy')}}"}
+            }
         },
-        "filter_labels": {"world_id": "所属世界", "snapshot_date": "快照日期"},
-        "browserfields": {"exclouded": ["id", "snapshot_json"], "alters": {}},
-        "editexclouded": ["id", "snapshot_json", "created_at"],
+        "editexclouded": ["id", "snapshot_json", "status", "snapshot_date", "created_at"],
+        "new_data_url": "{{entire_url('../api/create_snapshot.dspy')}}",
+        "update_data_url": "{{entire_url('../api/snapshot_update.dspy')}}",
+        "delete_data_url": "{{entire_url('../api/snapshot_delete.dspy')}}",
         "editable": {
             "new_data_url": "{{entire_url('../api/create_snapshot.dspy')}}",
-            "update_data_url": "{{entire_url('../api/world_snapshot_update.dspy')}}",
-            "delete_data_url": "{{entire_url('../api/world_snapshot_delete.dspy')}}"
+            "update_data_url": "{{entire_url('../api/snapshot_update.dspy')}}",
+            "delete_data_url": "{{entire_url('../api/snapshot_delete.dspy')}}"
         }
     }
 }
diff --git a/models/world_snapshot.json b/models/world_snapshot.json
index 7ce3d21..8975234 100644
--- a/models/world_snapshot.json
+++ b/models/world_snapshot.json
@@ -1,20 +1,25 @@
 {
     "summary": [
-        {"name": "world_snapshot", "title": "世界快照表", "primary": ["id"], "catelog": "entity"}
+        {
+            "name": "world_snapshot",
+            "title": "世界快照表",
+            "primary": ["id"],
+            "catelog": "entity"
+        }
     ],
     "fields": [
         {"name": "id", "title": "主键ID", "type": "str", "length": 32, "nullable": "no"},
-        {"name": "world_id", "title": "所属世界", "type": "str", "length": 32, "nullable": "no"},
+        {"name": "world_id", "title": "世界ID", "type": "str", "length": 32, "nullable": "no"},
         {"name": "name", "title": "快照名称", "type": "str", "length": 255, "nullable": "no"},
-        {"name": "snapshot_type", "title": "快照类型", "type": "str", "length": 16, "nullable": "no", "default": "0"},
-        {"name": "snapshot_json", "title": "快照数据JSON", "type": "text", "nullable": "no"},
-        {"name": "status", "title": "状态", "type": "str", "length": 16, "nullable": "no", "default": "0"},
+        {"name": "snapshot_type", "title": "快照类型", "type": "str", "length": 32, "nullable": "no", "default": "full"},
+        {"name": "snapshot_json", "title": "快照内容", "type": "text"},
+        {"name": "status", "title": "快照状态", "type": "str", "length": 32, "nullable": "no", "default": "active"},
         {"name": "snapshot_date", "title": "快照日期", "type": "date", "nullable": "no"},
         {"name": "created_at", "title": "创建时间", "type": "timestamp", "nullable": "no"}
     ],
     "indexes": [
-        {"name": "idx_snapshot_world", "idxtype": "index", "idxfields": ["world_id"]},
-        {"name": "idx_snapshot_world_date", "idxtype": "index", "idxfields": ["world_id", "snapshot_date"]}
+        {"name": "idx_snapshot_world", "idxtype": "index", "idxfields": ["world_id", "snapshot_date"]},
+        {"name": "idx_snapshot_list", "idxtype": "index", "idxfields": ["world_id", "status", "created_at"]}
     ],
     "codes": [
         {"field": "world_id", "table": "world", "valuefield": "id", "textfield": "name"},
diff --git a/scripts/load_path.py b/scripts/load_path.py
index 69ab459..f582829 100644
--- a/scripts/load_path.py
+++ b/scripts/load_path.py
@@ -1,64 +1,72 @@
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-"""world_snapshot 模块 RBAC 注册脚本。所有 path 显式列出，禁止通配符。"""
+"""world_snapshot RBAC registration (per-module load_path.py).
+
+Explicit paths only - no wildcards. Runs against the Sage root's
+set_role_perm.py via the central load_path.py code path.
+"""
 import os
+import subprocess
 import sys
 
-MOD = 'world_snapshot'
 
-
-def _find_sage_root():
+def find_sage_root():
     here = os.path.dirname(os.path.abspath(__file__))
-    candidates = [
-        os.path.join(here, '..', '..', '..'),
-        os.path.expanduser('~/repos/sage'),
-        os.path.expanduser('~/sage'),
-    ]
-    for c in candidates:
-        c = os.path.abspath(c)
-        if os.path.isdir(os.path.join(c, 'wwwroot')) and os.path.isdir(os.path.join(c, 'py3', 'bin')):
-            return c
+    for cand in (os.path.join(here, '..', '..', '..'),
+                 os.path.join(os.path.expanduser('~'), 'repos', 'sage'),
+                 os.path.join(os.path.expanduser('~'), 'sage')):
+        cand = os.path.normpath(cand)
+        if os.path.isdir(os.path.join(cand, 'wwwroot')) and os.path.isdir(os.path.join(cand, 'py3', 'bin')):
+            return cand
     return None
 
-PATHS_ANY = [f'/{MOD}/index.ui']
+
+PATHS_ANY = [
+    '/world_snapshot/menu.ui',
+    '/world_snapshot/index.ui',
+]
 
 PATHS_LOGINED = [
-    f'/{MOD}',
-    f'/{MOD}/world_snapshot',
-    f'/{MOD}/world_snapshot/index.ui',
-    f'/{MOD}/world_snapshot/get_world_snapshot.dspy',
-    f'/{MOD}/world_snapshot/add_world_snapshot.dspy',
-    f'/{MOD}/world_snapshot/update_world_snapshot.dspy',
-    f'/{MOD}/world_snapshot/delete_world_snapshot.dspy',
-    f'/{MOD}/api/create_snapshot.dspy',
-    f'/{MOD}/api/restore_snapshot.dspy',
-    f'/{MOD}/api/get_snapshot.dspy',
-    f'/{MOD}/api/list_snapshots.dspy',
-    f'/{MOD}/api/world_snapshot_update.dspy',
-    f'/{MOD}/api/world_snapshot_delete.dspy',
-    f'/{MOD}/api/list_worlds_for_snapshot.dspy',
-    f'/{MOD}/api/list_snapshot_types.dspy',
-    f'/{MOD}/api/list_snapshot_statuses.dspy',
+    '/world_snapshot/api/create_snapshot.dspy',
+    '/world_snapshot/api/snapshot_update.dspy',
+    '/world_snapshot/api/snapshot_delete.dspy',
+    '/world_snapshot/api/get_snapshot.dspy',
+    '/world_snapshot/api/list_snapshots.dspy',
+    '/world_snapshot/api/restore_snapshot.dspy',
+    '/world_snapshot/api/get_search_world.dspy',
+    '/world_snapshot/api/get_search_snapshot_type.dspy',
+    '/world_snapshot/api/get_search_status.dspy',
+    '/world_snapshot/world_snapshot',
+    '/world_snapshot/world_snapshot/index.ui',
+    '/world_snapshot/world_snapshot/get_world_snapshot.dspy',
+    '/world_snapshot/world_snapshot/add_world_snapshot.dspy',
+    '/world_snapshot/world_snapshot/update_world_snapshot.dspy',
+    '/world_snapshot/world_snapshot/delete_world_snapshot.dspy',
 ]
 
 
 def main():
-    sage_root = _find_sage_root()
+    sage_root = find_sage_root()
     if not sage_root:
-        print('ERROR: Sage root not found, skip RBAC registration')
-        sys.exit(1)
-    sys.path.insert(0, os.path.join(sage_root, 'py3', 'bin'))
-    sys.path.insert(0, sage_root)
-    try:
-        from set_role_perm import set_role_perm
-    except Exception as e:
-        print('WARN: cannot import set_role_perm: %s' % e)
-        sys.exit(1)
-    for path in PATHS_ANY:
-        set_role_perm(path, 'any')
-    for path in PATHS_LOGINED:
-        set_role_perm(path, 'logined')
-    print('RBAC registered for module %s' % MOD)
+        print('world_snapshot load_path.py: sage root not found, skip', file=sys.stderr)
+        return 1
+    loader = os.path.join(sage_root, 'load_path.py')
+    if not os.path.isfile(loader):
+        print('world_snapshot load_path.py: central load_path.py not found, skip', file=sys.stderr)
+        return 1
+    entries = []
+    for p in PATHS_ANY:
+        entries.append((p, 'any'))
+    for p in PATHS_LOGINED:
+        entries.append((p, 'logined'))
+    payload = '\n'.join('{} {}'.format(p, role) for p, role in entries)
+    proc = subprocess.run([sys.executable, loader, payload], capture_output=True, text=True)
+    if proc.stdout:
+        print(proc.stdout)
+    if proc.stderr:
+        print(proc.stderr, file=sys.stderr)
+    return proc.returncode
 
 
 if __name__ == '__main__':
-    main()
+    sys.exit(main())
diff --git a/skill/SKILL.md b/skill/SKILL.md
index 362b793..75cd330 100644
--- a/skill/SKILL.md
+++ b/skill/SKILL.md
@@ -1,21 +1,65 @@
 ---
 name: world_snapshot
-description: world_snapshot 模块技能文档——世界快照管理（世界状态快照生成、查询与恢复）。
+description: 世界状态快照模块（W-03）——聚合 world/scene/entity 当前状态生成快照，支持查询与恢复，与 world 表状态联动。
 ---
 
 # world_snapshot 模块
 
-世界状态快照模块，聚合世界 + 场景 + 实体当前状态生成快照，支持查询与恢复。
+世界状态快照模块（W-03）。聚合世界（world）+ 场景（scene）+ 实体（entity）当前状态
+生成快照写入 `snapshot_json`，支持分页查询、单条查询、更新、删除与恢复，恢复时联动
+world 表状态（经 world 模块 set_world_mode 契约，保持模式流转校验完整）。
 
 ## 数据模型
-表 `world_snapshot`：id、world_id、name、snapshot_type、snapshot_json、status、snapshot_date(date)、created_at。
 
-## 关键接口
-- create_snapshot / restore_snapshot / list_snapshots / get_snapshot / update_snapshot / delete_snapshot
+表 `world_snapshot`（models/world_snapshot.json 四段式 summary/fields/indexes/codes）：
+- id VARCHAR(32) PK（getID() 生成，禁 uuid）
+- world_id VARCHAR(32) NOT NULL（codes → world 表）
+- name VARCHAR(255) NOT NULL
+- snapshot_type VARCHAR(32) DEFAULT 'full'（snapshot_type 编码字典 full/incremental）
+- snapshot_json TEXT（聚合内容）
+- status VARCHAR(32) DEFAULT 'active'（snapshot_status 编码字典 active/restored/invalid）
+- snapshot_date date（业务日期仅到天）
+- created_at timestamp NOT NULL
+- 复合索引 idx_snapshot_world(world_id, snapshot_date)、idx_snapshot_list(world_id, status, created_at)
+
+编码字典：init/data.json 幂等落库 `snapshot_type`（full=全量快照/incremental=增量快照）
+与 `snapshot_status`（active=有效/restored=已恢复/invalid=失效），appcodes + appcodes_kv 同插。
+
+## 关键接口（经 load_world_snapshot() 注册到 ServerEnv）
+
+- `create_snapshot(params)` → 校验 world 存在、snapshot_type 白名单（full/incremental），
+  聚合 world/scene/entity 当前状态写入 snapshot_json，必设 snapshot_date/created_at
+- `get_snapshot(params)` → 按 id 单条查询
+- `list_snapshots(params)` → 分页 {list, total, page, page_size}；count 与数据查询分离，
+  显式列清单（排除 TEXT），P95 达标
+- `update_snapshot(params)` → 部分更新（排除 id/created_at/snapshot_json/_text）
+- `delete_snapshot(params)` → 按 id 删除
+- `restore_snapshot(params)` → 校验 snapshot_json 合法性、标记 status=restored、
+  联动 world 状态（经 env.set_world_mode 契约，不存在或失败不阻断）
 - 下拉：list_worlds_for_snapshot / list_snapshot_types / list_snapshot_statuses
 
+REST 前缀 `/api/*`（wwwroot/api/*.dspy）：
+- create_snapshot.dspy / snapshot_update.dspy / snapshot_delete.dspy
+- get_snapshot.dspy / list_snapshots.dspy / restore_snapshot.dspy
+- get_search_world.dspy / get_search_snapshot_type.dspy / get_search_status.dspy（下拉，返回 [{value,text}]，首项"全部"）
+
+统一错误结构：`{code, message, field, detail}`；分页结构：`{list, total}`。
+
 ## 陷阱
-- 库名禁止硬编码，统一 get_module_dbname("world_snapshot")
-- dspy 无 import
-- create_snapshot 必须设置 created_at/snapshot_date
+
+- 库名禁止硬编码：.py 用 `ServerEnv().get_module_dbname('world_snapshot')`，.dspy 直接
+  `get_module_dbname('world_snapshot')`（预载全局）
+- 无硬编码中文（错误消息用英文 code）；dspy 无 import（json/format_exc/debug/getID 等为预载全局）
+- create_snapshot 必须设置 created_at/snapshot_date（sqlor 不自动补时间戳，缺 created_at 的
+  sor.C 会静默丢记录）
 - snapshot_date 用 date 类型（业务日期仅到天）
+- restore_snapshot 对 world 状态联动用契约调用（env.set_world_mode），不直接改 world 表，
+  保证 mode 流转规则校验不被绕过
+- 下拉接口返回纯数组 [{value,text}]，错误时返回含"全部"的回退数组
+
+## 依赖
+
+- sqlor（DBPools/sqlExe/sor.C/U/D/R）
+- ahserver（ServerEnv、get_module_dbname）
+- appbase（appcodes/appcodes_kv 编码字典）
+- world / scene / entity（聚合数据源，经各自模块库名读取，缺失时降级为空）
diff --git a/world_snapshot/__init__.py b/world_snapshot/__init__.py
index 1c75dbd..d640233 100644
--- a/world_snapshot/__init__.py
+++ b/world_snapshot/__init__.py
@@ -1,12 +1,27 @@
 # -*- coding: utf-8 -*-
+"""world_snapshot package (W-03): world state snapshot management."""
 from .init import (
-    load_world_snapshot, list_snapshots, get_snapshot, create_snapshot,
-    update_snapshot, delete_snapshot, restore_snapshot,
-    list_worlds_for_snapshot, list_snapshot_types, list_snapshot_statuses,
+    load_world_snapshot,
+    create_snapshot,
+    update_snapshot,
+    delete_snapshot,
+    get_snapshot,
+    list_snapshots,
+    restore_snapshot,
+    list_worlds_for_snapshot,
+    list_snapshot_types,
+    list_snapshot_statuses,
 )
 
 __all__ = [
-    "load_world_snapshot", "list_snapshots", "get_snapshot", "create_snapshot",
-    "update_snapshot", "delete_snapshot", "restore_snapshot",
-    "list_worlds_for_snapshot", "list_snapshot_types", "list_snapshot_statuses",
+    'load_world_snapshot',
+    'create_snapshot',
+    'update_snapshot',
+    'delete_snapshot',
+    'get_snapshot',
+    'list_snapshots',
+    'restore_snapshot',
+    'list_worlds_for_snapshot',
+    'list_snapshot_types',
+    'list_snapshot_statuses',
 ]
diff --git a/world_snapshot/init.py b/world_snapshot/init.py
index 2343456..b00ad01 100644
--- a/world_snapshot/init.py
+++ b/world_snapshot/init.py
@@ -1,154 +1,318 @@
 # -*- coding: utf-8 -*-
-"""world_snapshot 模块 —— 世界状态快照管理。库名经 get_module_dbname('world_snapshot') 获取，禁止硬编码。"""
+"""world_snapshot module implementation (W-03 world snapshot).
+
+Aggregates world / scene / entity current state into snapshot_json,
+supports paged query, detail get, update, delete and restore with world
+status linkage. All functions are registered to ServerEnv via
+load_world_snapshot() and are callable from .dspy wrappers directly.
+"""
 import json
+
+from appPublic.timeUtils import curDateString
 from appPublic.uniqueID import getID
-from appPublic.timeUtils import curDateString, timestampstr
 from ahserver.serverenv import ServerEnv
 from sqlor.dbpools import DBPools
 
-
-def _get_dbname():
-    return ServerEnv().get_module_dbname('world_snapshot')
+SNAPSHOT_TYPES = ('full', 'incremental')
+SNAPSHOT_STATUS_ACTIVE = 'active'
+SNAPSHOT_STATUS_RESTORED = 'restored'
+WORLD_MODE_ACTIVE = 'active'
 
 
-async def list_snapshots(ns):
+def _to_dict(row):
+    """Convert a sqlor result row (DictObject) to a plain dict."""
+    if row is None:
+        return {}
+    try:
+        return dict(row)
+    except Exception:
+        try:
+            keys = list(row.keys())
+        except Exception:
+            keys = [k for k in dir(row) if not k.startswith('_')]
+        return {k: getattr(row, k, None) for k in keys}
+
+
+def _module_dbname(env, module):
+    try:
+        return env.get_module_dbname(module)
+    except Exception:
+        return None
+
+
+async def _get_world(env, world_id):
+    """Read the world record (best effort, world module db)."""
+    dbname = _module_dbname(env, 'world')
+    if not dbname:
+        return None
+    try:
+        db = DBPools()
+        async with db.sqlorContext(dbname) as sor:
+            rows = await sor.sqlExe('select * from world where id = ${wid}$', {'wid': world_id})
+        if not rows:
+            return None
+        return _to_dict(rows[0])
+    except Exception:
+        return None
+
+
+async def _fetch_child_rows(env, module, table, world_id):
+    """Best-effort read of child rows (scene/entity) filtered by world_id."""
+    dbname = _module_dbname(env, module)
+    if not dbname:
+        return []
+    try:
+        db = DBPools()
+        async with db.sqlorContext(dbname) as sor:
+            rows = await sor.sqlExe(
+                'select * from ' + table + ' where world_id = ${wid}$ order by created_at desc',
+                {'wid': world_id})
+        return [_to_dict(r) for r in (rows or [])]
+    except Exception:
+        return []
+
+
+async def _get_appcodes(parentid):
+    """Read dict items from appcodes_kv (appbase first, module db fallback)."""
+    env = ServerEnv()
+    tried = []
+    for module in ('appbase', 'world_snapshot'):
+        dbname = _module_dbname(env, module)
+        if not dbname or dbname in tried:
+            continue
+        tried.append(dbname)
+        try:
+            db = DBPools()
+            async with db.sqlorContext(dbname) as sor:
+                rows = await sor.sqlExe(
+                    'select k as value, v as text from appcodes_kv where parentid = ${pid}$ order by v',
+                    {'pid': parentid})
+            return [{'value': r.value, 'text': r.text} for r in (rows or [])]
+        except Exception:
+            continue
+    return []
+
+
+async def create_snapshot(params):
+    """Create a world snapshot: aggregate world/scene/entity current state."""
+    params = params or {}
+    world_id = params.get('world_id')
+    if not world_id:
+        return {'code': 'PARAM_REQUIRED', 'message': 'world_id is required', 'field': 'world_id', 'detail': ''}
+    snapshot_type = params.get('snapshot_type') or 'full'
+    if snapshot_type not in SNAPSHOT_TYPES:
+        return {'code': 'INVALID_SNAPSHOT_TYPE', 'message': 'snapshot_type must be full or incremental',
+                'field': 'snapshot_type', 'detail': snapshot_type}
+    env = ServerEnv()
+    world = await _get_world(env, world_id)
+    if not world:
+        return {'code': 'WORLD_NOT_FOUND', 'message': 'world not found', 'field': 'world_id', 'detail': world_id}
+    snap_data = {
+        'world': world,
+        'scene': await _fetch_child_rows(env, 'scene', 'scene', world_id),
+        'entity': await _fetch_child_rows(env, 'entity', 'entity', world_id),
+        'snapshot_type': snapshot_type,
+        'snapshot_date': curDateString(),
+    }
+    snapshot_json = json.dumps(snap_data, ensure_ascii=False)
+    name = params.get('name')
+    if not name:
+        name = str(world.get('name') or world_id) + '_snapshot'
+    ns = {
+        'id': getID(),
+        'world_id': world_id,
+        'name': name,
+        'snapshot_type': snapshot_type,
+        'snapshot_json': snapshot_json,
+        'status': SNAPSHOT_STATUS_ACTIVE,
+        'snapshot_date': curDateString(),
+        'created_at': curDateString(),
+    }
+    dbname = env.get_module_dbname('world_snapshot')
     db = DBPools()
-    page = int(ns.get('page', 1) or 1)
-    page_size = int(ns.get('rows', ns.get('pagerows', 20)) or 20)
-    conds = ['1=1']
-    params = {}
-    world_id = ns.get('world_id', '')
-    snapshot_date = ns.get('snapshot_date', '')
+    async with db.sqlorContext(dbname) as sor:
+        await sor.C('world_snapshot', ns)
+    return {'success': True, 'id': ns['id'], 'snapshot_type': snapshot_type,
+            'snapshot_date': ns['snapshot_date']}
+
+
+async def get_snapshot(params):
+    """Get one snapshot record by id."""
+    params = params or {}
+    snapshot_id = params.get('id')
+    if not snapshot_id:
+        return {'code': 'PARAM_REQUIRED', 'message': 'id is required', 'field': 'id', 'detail': ''}
+    dbname = ServerEnv().get_module_dbname('world_snapshot')
+    db = DBPools()
+    async with db.sqlorContext(dbname) as sor:
+        rows = await sor.R('world_snapshot', {'id': snapshot_id})
+    if not rows:
+        return {'code': 'SNAPSHOT_NOT_FOUND', 'message': 'snapshot not found', 'field': 'id', 'detail': snapshot_id}
+    return _to_dict(rows[0])
+
+
+async def list_snapshots(params):
+    """Paged snapshot list; count and data queries separated (P95 friendly)."""
+    params = params or {}
+    try:
+        page = int(params.get('page') or 1)
+    except Exception:
+        page = 1
+    try:
+        page_size = int(params.get('page_size') or params.get('rows') or params.get('pagerows') or 20)
+    except Exception:
+        page_size = 20
+    if page < 1:
+        page = 1
+    page_size = min(max(page_size, 1), 200)
+    offset = (page - 1) * page_size
+    conds = []
+    ns = {}
+    world_id = params.get('world_id')
     if world_id:
         conds.append('world_id = ${world_id}$')
-        params['world_id'] = world_id
-    if snapshot_date:
-        conds.append('snapshot_date = ${snapshot_date}$')
-        params['snapshot_date'] = snapshot_date
-    where = ' and '.join(conds)
-    offset = (page - 1) * page_size
-    async with db.sqlorContext(_get_dbname()) as sor:
-        cnt = await sor.sqlExe('SELECT COUNT(*) AS cnt FROM world_snapshot WHERE ' + where, params)
-        total = cnt[0]['cnt'] if cnt else 0
-        rows = await sor.sqlExe('SELECT id, world_id, name, snapshot_type, status, snapshot_date, created_at FROM world_snapshot WHERE ' + where + ' ORDER BY created_at DESC LIMIT ' + str(offset) + ', ' + str(page_size), params)
-    return {'success': True, 'total': total, 'rows': rows, 'page': page, 'page_size': page_size}
-
-
-async def get_snapshot(ns):
-    sid = ns.get('id', '')
-    if not sid:
-        return {'success': False, 'message': 'id 不能为空'}
+        ns['world_id'] = world_id
+    status = params.get('status')
+    if status:
+        conds.append('status = ${status}$')
+        ns['status'] = status
+    snapshot_type = params.get('snapshot_type')
+    if snapshot_type:
+        conds.append('snapshot_type = ${snapshot_type}$')
+        ns['snapshot_type'] = snapshot_type
+    where = (' where ' + ' and '.join(conds)) if conds else ''
+    dbname = ServerEnv().get_module_dbname('world_snapshot')
     db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        rows = await sor.R('world_snapshot', {'id': sid})
-    if not rows:
-        return {'success': False, 'message': '快照不存在'}
-    return {'success': True, 'data': rows[0]}
+    async with db.sqlorContext(dbname) as sor:
+        cnt = await sor.sqlExe('select count(*) as cnt from world_snapshot' + where, ns)
+        total = int(cnt[0].cnt) if cnt else 0
+        rows = await sor.sqlExe(
+            'select id, world_id, name, snapshot_type, status, snapshot_date, created_at'
+            ' from world_snapshot' + where +
+            ' order by created_at desc limit ' + str(page_size) + ' offset ' + str(offset),
+            ns)
+    return {'list': [_to_dict(r) for r in (rows or [])], 'total': total,
+            'page': page, 'page_size': page_size}
 
 
-async def create_snapshot(ns):
-    world_id = ns.get('world_id', '')
-    name = ns.get('name', '')
-    snapshot_type = ns.get('snapshot_type', '0')
-    status = ns.get('status', '0')
-    snapshot_date = ns.get('snapshot_date') or curDateString()
-    if not world_id or not name:
-        return {'success': False, 'message': 'world_id 和 name 不能为空'}
-    db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        worlds = await sor.R('world', {'id': world_id})
-        scenes = await sor.R('scene', {'world_id': world_id})
-        entities = await sor.R('entity', {'world_id': world_id})
-        snapshot_data = {'world': worlds or [], 'scenes': scenes or [], 'entities': entities or []}
-        rec = {'id': getID(), 'world_id': world_id, 'name': name, 'snapshot_type': snapshot_type,
-               'snapshot_json': json.dumps(snapshot_data, ensure_ascii=False, default=str),
-               'status': status, 'snapshot_date': snapshot_date, 'created_at': timestampstr()}
-        await sor.C('world_snapshot', rec)
-    return {'success': True, 'id': rec['id'], 'message': '快照生成成功'}
-
-
-async def update_snapshot(ns):
-    sid = ns.get('id', '')
-    if not sid:
-        return {'success': False, 'message': 'id 不能为空'}
+async def update_snapshot(params):
+    """Partial update of a snapshot record (id required)."""
+    params = params or {}
+    snapshot_id = params.get('id')
+    if not snapshot_id:
+        return {'code': 'PARAM_REQUIRED', 'message': 'id is required', 'field': 'id', 'detail': ''}
     upd = {}
-    for k in ('name', 'world_id', 'snapshot_type', 'status', 'snapshot_date'):
-        if k in ns and ns[k] is not None and ns[k] != '':
-            upd[k] = ns[k]
+    for k, v in params.items():
+        if k in ('id', 'created_at', 'snapshot_json'):
+            continue
+        if k.endswith('_text'):
+            continue
+        if v is None or v == '':
+            continue
+        upd[k] = v
     if not upd:
-        return {'success': False, 'message': '无更新字段'}
-    upd['id'] = sid
+        return {'code': 'NO_FIELDS_TO_UPDATE', 'message': 'no fields to update', 'field': '', 'detail': ''}
+    upd['id'] = snapshot_id
+    dbname = ServerEnv().get_module_dbname('world_snapshot')
     db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
+    async with db.sqlorContext(dbname) as sor:
         await sor.U('world_snapshot', upd)
-    return {'success': True, 'id': sid}
+    return {'success': True, 'id': snapshot_id}
 
 
-async def delete_snapshot(ns):
-    sid = ns.get('id', '')
-    if not sid:
-        return {'success': False, 'message': 'id 不能为空'}
+async def delete_snapshot(params):
+    """Delete a snapshot record by id."""
+    params = params or {}
+    snapshot_id = params.get('id')
+    if not snapshot_id:
+        return {'code': 'PARAM_REQUIRED', 'message': 'id is required', 'field': 'id', 'detail': ''}
+    dbname = ServerEnv().get_module_dbname('world_snapshot')
     db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        await sor.D('world_snapshot', {'id': sid})
-    return {'success': True, 'id': sid}
+    async with db.sqlorContext(dbname) as sor:
+        await sor.D('world_snapshot', {'id': snapshot_id})
+    return {'success': True, 'id': snapshot_id}
 
 
-async def restore_snapshot(ns):
-    sid = ns.get('id', ns.get('snapshot_id', ''))
-    if not sid:
-        return {'success': False, 'message': 'snapshot_id 不能为空'}
-    db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        rows = await sor.R('world_snapshot', {'id': sid})
-        if not rows:
-            return {'success': False, 'message': '快照不存在'}
-        snap = rows[0]
-        try:
-            data = json.loads(snap.get('snapshot_json') or '{}')
-        except Exception:
-            return {'success': False, 'message': '快照数据格式错误'}
-        if not isinstance(data, dict):
-            return {'success': False, 'message': '快照数据无效'}
-        await sor.U('world_snapshot', {'id': sid, 'status': '1'})
-    return {'success': True, 'id': sid, 'message': '快照恢复成功', 'restored': data}
+async def restore_snapshot(params):
+    """Validate snapshot json, mark snapshot restored, link world status.
 
-
-async def list_worlds_for_snapshot(params_kw=None):
-    db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        rows = await sor.sqlExe('SELECT id AS value, name AS text FROM world ORDER BY name', {})
-    return rows or []
-
-
-async def list_snapshot_types(params_kw=None):
-    db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        rows = await sor.sqlExe("SELECT k AS value, v AS text FROM appcodes_kv WHERE parentid = 'snapshot_type' ORDER BY k", {})
-    return rows or []
-
-
-async def list_snapshot_statuses(params_kw=None):
-    db = DBPools()
-    async with db.sqlorContext(_get_dbname()) as sor:
-        rows = await sor.sqlExe("SELECT k AS value, v AS text FROM appcodes_kv WHERE parentid = 'snapshot_status' ORDER BY k", {})
-    return rows or []
-
-
-async def load_world_snapshot():
+    World linkage goes through the world module's own set_world_mode()
+    contract when available (keeps mode transition validation intact).
+    """
+    params = params or {}
+    snapshot_id = params.get('id')
+    if not snapshot_id:
+        return {'code': 'PARAM_REQUIRED', 'message': 'id is required', 'field': 'id', 'detail': ''}
     env = ServerEnv()
-    env.list_snapshots = list_snapshots
-    env.get_snapshot = get_snapshot
+    dbname = env.get_module_dbname('world_snapshot')
+    db = DBPools()
+    async with db.sqlorContext(dbname) as sor:
+        rows = await sor.R('world_snapshot', {'id': snapshot_id})
+        if not rows:
+            return {'code': 'SNAPSHOT_NOT_FOUND', 'message': 'snapshot not found',
+                    'field': 'id', 'detail': snapshot_id}
+        snap = rows[0]
+        snapshot_json = snap.snapshot_json or ''
+        try:
+            data = json.loads(snapshot_json)
+        except Exception:
+            return {'code': 'INVALID_SNAPSHOT_JSON', 'message': 'snapshot json is invalid',
+                    'field': 'snapshot_json', 'detail': ''}
+        world_id = snap.world_id
+        await sor.U('world_snapshot', {'id': snapshot_id, 'status': SNAPSHOT_STATUS_RESTORED})
+    world_restored = False
+    set_mode = getattr(env, 'set_world_mode', None)
+    if callable(set_mode):
+        try:
+            res = await set_mode({'id': world_id, 'mode': WORLD_MODE_ACTIVE})
+            world_restored = bool(res and res.get('success'))
+        except Exception:
+            world_restored = False
+    return {'success': True, 'id': snapshot_id, 'world_id': world_id,
+            'world_restored': world_restored, 'data': data}
+
+
+async def list_worlds_for_snapshot():
+    """Dropdown source: worlds for the snapshot picker."""
+    env = ServerEnv()
+    for module in ('world', 'world_snapshot'):
+        dbname = _module_dbname(env, module)
+        if not dbname:
+            continue
+        try:
+            db = DBPools()
+            async with db.sqlorContext(dbname) as sor:
+                rows = await sor.sqlExe('select id as value, name as text from world order by created_at desc', {})
+            result = [{'value': r.value, 'text': r.text} for r in (rows or [])]
+            if result:
+                return result
+        except Exception:
+            continue
+    return []
+
+
+async def list_snapshot_types():
+    return await _get_appcodes('snapshot_type')
+
+
+async def list_snapshot_statuses():
+    return await _get_appcodes('snapshot_status')
+
+
+def load_world_snapshot(env=None):
+    """Register all world_snapshot functions to ServerEnv."""
+    if env is None:
+        env = ServerEnv()
     env.create_snapshot = create_snapshot
+    env.create_snapshots = create_snapshot
     env.update_snapshot = update_snapshot
+    env.update_snapshots = update_snapshot
     env.delete_snapshot = delete_snapshot
+    env.delete_snapshots = delete_snapshot
+    env.get_snapshot = get_snapshot
+    env.list_snapshots = list_snapshots
     env.restore_snapshot = restore_snapshot
     env.list_worlds_for_snapshot = list_worlds_for_snapshot
     env.list_snapshot_types = list_snapshot_types
     env.list_snapshot_statuses = list_snapshot_statuses
-    env.create_world_snapshot = create_snapshot
-    env.create_world_snapshots = create_snapshot
-    env.update_world_snapshot = update_snapshot
-    env.update_world_snapshots = update_snapshot
-    env.delete_world_snapshot = delete_snapshot
-    env.delete_world_snapshots = delete_snapshot
+    return env
diff --git a/wwwroot/api/create_snapshot.dspy b/wwwroot/api/create_snapshot.dspy
index 56f4c85..4e38af1 100644
--- a/wwwroot/api/create_snapshot.dspy
+++ b/wwwroot/api/create_snapshot.dspy
@@ -1,3 +1,8 @@
-debug('create_snapshot.dspy: START')
-result = await create_snapshot(dict(params_kw))
-return result
+# world_snapshot create_snapshot.dspy
+# 创建世界快照：聚合 world/scene/entity 当前状态写入 snapshot_json
+try:
+    result = await create_snapshot(params_kw)
+    return result
+except Exception as e:
+    debug(f'create_snapshot.dspy error: {format_exc()}')
+    return {'code': 'INTERNAL_ERROR', 'message': str(e), 'field': '', 'detail': ''}
diff --git a/wwwroot/api/get_search_snapshot_type.dspy b/wwwroot/api/get_search_snapshot_type.dspy
index 2bfa0cc..08cf28f 100644
--- a/wwwroot/api/get_search_snapshot_type.dspy
+++ b/wwwroot/api/get_search_snapshot_type.dspy
@@ -1,2 +1,11 @@
-result = await list_snapshot_types({})
-return [{'value': '', 'text': '全部'}] + list(result or [])
+# world_snapshot get_search_snapshot_type.dspy
+# 下拉：快照类型（[{value,text}]，首项"全部"）
+result = [{'value': '', 'text': '全部'}]
+try:
+    options = await list_snapshot_types()
+    if options:
+        result = result + list(options)
+    return json.dumps(result, ensure_ascii=False)
+except Exception as e:
+    debug(f'get_search_snapshot_type.dspy error: {format_exc()}')
+    return json.dumps(result, ensure_ascii=False)
diff --git a/wwwroot/api/get_search_status.dspy b/wwwroot/api/get_search_status.dspy
index 71aad63..ed0bac1 100644
--- a/wwwroot/api/get_search_status.dspy
+++ b/wwwroot/api/get_search_status.dspy
@@ -1,2 +1,11 @@
-result = await list_snapshot_statuses({})
-return [{'value': '', 'text': '全部'}] + list(result or [])
+# world_snapshot get_search_status.dspy
+# 下拉：快照状态（[{value,text}]，首项"全部"）
+result = [{'value': '', 'text': '全部'}]
+try:
+    options = await list_snapshot_statuses()
+    if options:
+        result = result + list(options)
+    return json.dumps(result, ensure_ascii=False)
+except Exception as e:
+    debug(f'get_search_status.dspy error: {format_exc()}')
+    return json.dumps(result, ensure_ascii=False)
diff --git a/wwwroot/api/get_search_world.dspy b/wwwroot/api/get_search_world.dspy
new file mode 100644
index 0000000..1a3e364
--- /dev/null
+++ b/wwwroot/api/get_search_world.dspy
@@ -0,0 +1,11 @@
+# world_snapshot get_search_world.dspy
+# 下拉：可选世界列表（[{value,text}]，首项"全部"）
+result = [{'value': '', 'text': '全部'}]
+try:
+    options = await list_worlds_for_snapshot()
+    if options:
+        result = result + list(options)
+    return json.dumps(result, ensure_ascii=False)
+except Exception as e:
+    debug(f'get_search_world.dspy error: {format_exc()}')
+    return json.dumps(result, ensure_ascii=False)
diff --git a/wwwroot/api/get_snapshot.dspy b/wwwroot/api/get_snapshot.dspy
index 8122335..8c720b3 100644
--- a/wwwroot/api/get_snapshot.dspy
+++ b/wwwroot/api/get_snapshot.dspy
@@ -1,3 +1,8 @@
-debug('get_snapshot.dspy: START')
-result = await get_snapshot(dict(params_kw))
-return result
+# world_snapshot get_snapshot.dspy
+# 查询单条世界快照（id 必填）
+try:
+    result = await get_snapshot(params_kw)
+    return result
+except Exception as e:
+    debug(f'get_snapshot.dspy error: {format_exc()}')
+    return {'code': 'INTERNAL_ERROR', 'message': str(e), 'field': '', 'detail': ''}
diff --git a/wwwroot/api/list_snapshots.dspy b/wwwroot/api/list_snapshots.dspy
index b095a69..91ffba5 100644
--- a/wwwroot/api/list_snapshots.dspy
+++ b/wwwroot/api/list_snapshots.dspy
@@ -1,3 +1,8 @@
-debug('list_snapshots.dspy: START')
-result = await list_snapshots(dict(params_kw))
-return result
+# world_snapshot list_snapshots.dspy
+# 分页查询世界快照列表（world_id/status/snapshot_type 可选过滤）
+try:
+    result = await list_snapshots(params_kw)
+    return result
+except Exception as e:
+    debug(f'list_snapshots.dspy error: {format_exc()}')
+    return {'code': 'INTERNAL_ERROR', 'message': str(e), 'field': '', 'detail': ''}
diff --git a/wwwroot/api/restore_snapshot.dspy b/wwwroot/api/restore_snapshot.dspy
index 1ed2f64..7284cc6 100644
--- a/wwwroot/api/restore_snapshot.dspy
+++ b/wwwroot/api/restore_snapshot.dspy
@@ -1,3 +1,8 @@
-debug('restore_snapshot.dspy: START')
-result = await restore_snapshot(dict(params_kw))
-return result
+# world_snapshot restore_snapshot.dspy
+# 恢复世界快照：校验 snapshot_json、标记已恢复、联动 world 状态
+try:
+    result = await restore_snapshot(params_kw)
+    return result
+except Exception as e:
+    debug(f'restore_snapshot.dspy error: {format_exc()}')
+    return {'code': 'INTERNAL_ERROR', 'message': str(e), 'field': '', 'detail': ''}
diff --git a/wwwroot/api/snapshot_delete.dspy b/wwwroot/api/snapshot_delete.dspy
index 79248f7..ab2399c 100644
--- a/wwwroot/api/snapshot_delete.dspy
+++ b/wwwroot/api/snapshot_delete.dspy
@@ -1,2 +1,8 @@
-result = await delete_snapshot(params_kw)
-return result
+# world_snapshot snapshot_delete.dspy
+# 删除世界快照记录（id 必填）
+try:
+    result = await delete_snapshot(params_kw)
+    return result
+except Exception as e:
+    debug(f'snapshot_delete.dspy error: {format_exc()}')
+    return {'code': 'INTERNAL_ERROR', 'message': str(e), 'field': '', 'detail': ''}
diff --git a/wwwroot/api/snapshot_update.dspy b/wwwroot/api/snapshot_update.dspy
index b2970ac..0eb6fe2 100644
--- a/wwwroot/api/snapshot_update.dspy
+++ b/wwwroot/api/snapshot_update.dspy
@@ -1,2 +1,8 @@
-result = await update_snapshot(params_kw)
-return result
+# world_snapshot snapshot_update.dspy
+# 更新世界快照记录（部分更新，id 必填）
+try:
+    result = await update_snapshot(params_kw)
+    return result
+except Exception as e:
+    debug(f'snapshot_update.dspy error: {format_exc()}')
+    return {'code': 'INTERNAL_ERROR', 'message': str(e), 'field': '', 'detail': ''}
diff --git a/wwwroot/index.ui b/wwwroot/index.ui
index b387e10..abcdd04 100644
--- a/wwwroot/index.ui
+++ b/wwwroot/index.ui
@@ -1,22 +1,13 @@
-{
-  "widgettype": "VBox",
-  "options": {"width": "100%", "height": "100%", "padding": "20px"},
-  "subwidgets": [
-    {"widgettype": "Text", "options": {"label": "世界快照", "fontSize": "24px"}},
-    {"widgettype": "ResponsableBox", "options": {"gap": "16px", "minWidth": "250px"}, "subwidgets": [
-      {"widgettype": "VBox", "options": {"backgroundColor": "#FFFFFF", "padding": "20px", "cursor": "pointer"},
-       "binds": [{"wid": "self", "event": "click", "actiontype": "urlwidget", "target": "app.world_snapshot_content", "options": {"url": "{{entire_url('/world_snapshot/world_snapshot')}}"}, "mode": "replace"}],
-       "subwidgets": [
-         {"widgettype": "Text", "options": {"label": "快照列表", "fontSize": "16px"}},
-         {"widgettype": "Text", "options": {"label": "查看、编辑、删除世界快照", "fontSize": "12px", "color": "#888888"}}
-       ]},
-      {"widgettype": "VBox", "options": {"backgroundColor": "#FFFFFF", "padding": "20px", "cursor": "pointer"},
-       "binds": [{"wid": "self", "event": "click", "actiontype": "urlwidget", "target": "app.world_snapshot_content", "options": {"url": "{{entire_url('/world_snapshot/api/create_snapshot.dspy')}}", "method": "GET"}, "mode": "replace"}],
-       "subwidgets": [
-         {"widgettype": "Text", "options": {"label": "生成快照", "fontSize": "16px"}},
-         {"widgettype": "Text", "options": {"label": "聚合世界/场景/实体当前状态", "fontSize": "12px", "color": "#888888"}}
-       ]}
-    ]},
-    {"widgettype": "VBox", "id": "world_snapshot_content", "options": {"width": "100%", "flex": "1", "marginTop": "20px"}}
-  ]
-}
+{"widgettype":"VBox","options":{"width":"100%","height":"100%","padding":"20px"},"subwidgets":[
+  {"widgettype":"Text","options":{"label":"世界快照管理","fontSize":"24px"}},
+  {"widgettype":"ResponsableBox","options":{"gap":"16px","minWidth":"250px"},"subwidgets":[
+    {"widgettype":"VBox","options":{"backgroundColor":"#FFFFFF","padding":"20px","cursor":"pointer"},
+     "binds":[{"wid":"self","event":"click","actiontype":"urlwidget","target":"app.world_snapshot_content",
+               "options":{"url":"{{entire_url('/world_snapshot/world_snapshot/index.ui')}}"},"mode":"replace"}],
+     "subwidgets":[{"widgettype":"Text","options":{"label":"快照列表"}}]},
+    {"widgettype":"VBox","options":{"backgroundColor":"#FFFFFF","padding":"20px","cursor":"pointer"},
+     "binds":[{"wid":"self","event":"click","actiontype":"urlwidget","target":"app.world_snapshot_content",
+               "options":{"url":"{{entire_url('/world_snapshot/api/list_snapshots.dspy')}}"},"mode":"replace"}],
+     "subwidgets":[{"widgettype":"Text","options":{"label":"快照查询"}}]}
+  ]},
+  {"widgettype":"VBox","id":"app.world_snapshot_content","options":{"width":"100%","flex":"1","marginTop":"20px"}}]}
diff --git a/wwwroot/menu.ui b/wwwroot/menu.ui
new file mode 100644
index 0000000..c119796
--- /dev/null
+++ b/wwwroot/menu.ui
@@ -0,0 +1,7 @@
+{"widgettype":"VBox","options":{"width":"100%","height":"100%"},"subwidgets":[
+  {"widgettype":"Text","options":{"label":"世界快照","fontSize":"18px"}},
+  {"widgettype":"Menu","options":{"items":[
+    {"name":"snapshot_list","label":"快照列表","url":"{{entire_url('/world_snapshot/world_snapshot/index.ui')}}"},
+    {"name":"snapshot_query","label":"快照查询","url":"{{entire_url('/world_snapshot/api/list_snapshots.dspy')}}"}
+  ]}}
+]}