diff --git a/SKILL.md b/SKILL.md
index ec17e25..d2e3071 100644
--- a/SKILL.md
+++ b/SKILL.md
@@ -1,7 +1,7 @@
 ---
 name: sap-cli
 description: "Use when you need to operate SAP ABAP development objects — syncing code, querying metadata, managing transports, reading tables, or any task involving SAP ADT REST API. Trigger on: ABAP objects, SAP development, transport requests, DDIC types, SE11/SE16N/SE38/SE80 equivalents, 'sync to SAP', 'download from SAP', 'activate ABAP', 'read SAP table'. NOT for developing sap-cli itself."
-version: "2.2.0"
+version: "2.2.1"
 author: WuRangyu
 license: MIT
 ---
@@ -270,7 +270,7 @@ python main.py activate --name ZMY_CLASS --type class --corr_nr DEVK901XXX
 2. **禁止修改 SAP 标准对象**（`CL_*`、`SAPL*` 等）— 只允许只读操作
 3. **禁止未授权操作系统表**（TADIR、E071、SEOCLASS 等）— SELECT 诊断可以
 4. **sync 必须带 `--corr_nr`** — 否则触发交互提示
-5. **NW 7.40 DDIC Lock 返回 HTTP 406** — 系统限制，报告用户去 SE09
+5. **非交互 delete 用管道确认** — `echo "yes" | python main.py delete ...`（否则 EOFError）
 
 ---
 
@@ -278,19 +278,36 @@ python main.py activate --name ZMY_CLASS --type class --corr_nr DEVK901XXX
 
 | 问题 | 原因 | 解决 |
 |------|------|------|
-| HTTP 406（DDIC Lock） | NW 7.40 不支持 DDIC ADT Lock | 报告用户 → SE09 |
+| HTTP 406（DDIC sync Lock） | NW 7.40 DDIC sync 路径 lock 仍 406（delete 已修复） | 报告用户 → SE09 手动同步 DDIC |
 | HTTP 403（Locked） | 残留 enqueue lock | 先试 `run-program` 清锁，不行 → SM12 |
 | HTTP 400（SaveFailure） | 类 DEFINITION 与 SAP 不一致 | 对比本地 vs SAP 源码 |
+| HTTP 404（DDIC download/sync） | NW 7.40 无 `/source/main` 端点（7.50+ 特性） | DDIC 对象只能 create/info/delete，不能 download/sync |
 | HTTP 423（Transport lock） | 对象绑定在传输请求中 | 报告用户 → SE09 |
 | 激活失败 | NW 7.40 ADT 限制 | sap-cli 内置 double-activate，仍失败 → SE09 |
 | `WITH EMPTY KEY` dump | NW 7.40 不支持 | 改用 `WITH NON-UNIQUE KEY` |
 | 函数名格式错误 | 缺少 `/` 分隔符 | 使用 `ZGROUP/Z_FUNC` 格式 |
 
-## NW 7.40 兼容性
+## NW 7.40 兼容性（真实系统 E2E 验证 — v2.2.1）
 
-- **DDIC Lock**：HTTP 406，无法通过 ADT 锁定 DDIC 对象
+> 完整矩阵见 `docs/NW740-COMPATIBILITY.md`
+
+### 完整可用（download → 编辑 → sync 全闭环）
+
+`report` · `class` · `interface` · `function` · `functiongroup` · `include`
+
+### 仅 CRUD 可用（create/info/delete，无源码编辑）
+
+`domain` · `dataelement` — NW 7.40 的 DDIC 对象以 XML 存储于对象 URI，没有独立的 source/main 端点（7.50+ 特性）。即便 Eclipse ADT 在 7.40 上也无法编辑 DDIC 源码。
+
+### 端点缺失（代码已就位，待更高版本验证）
+
+`table` · `structure` · `tabletype` · `view` · `messageclass` · `searchhelp` · `lockobject` · `cdsview` — NW 7.40 ADT 端点层返回 404/415，请求未到达 XML 解析。
+
+### 其他 NW 7.40 特性
+
+- **DDIC Lock**：delete 已修复（专用 Accept 头），sync 路径仍 406
 - **激活误报**：首次激活可能报失败但实际成功，sap-cli 已内置 double-activate
-- **ABAP 语法限制**：不支持字符串模板 `|...|`、inline 声明 `DATA(...)`、`WITH EMPTY KEY`
+- **ABAP 语法限制**：不支持字符串模板 `\|...\|`、inline 声明 `DATA(...)`、`WITH EMPTY KEY`
 - **CSRF Token**：所有写操作必须携带，sap-cli 自动处理
 
 ---
diff --git a/VERSION b/VERSION
index ccbccc3..c043eea 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.0
+2.2.1
diff --git a/assets/sapcli/__init__.py b/assets/sapcli/__init__.py
index e8fb274..9e03187 100644
--- a/assets/sapcli/__init__.py
+++ b/assets/sapcli/__init__.py
@@ -2,4 +2,4 @@
 sap-cli — 基于 SAP ADT REST API 的 ABAP 开发对象管理工具
 """
 
-__version__ = "2.2.0"
+__version__ = "2.2.1"
diff --git a/assets/sapcli/cli/app.py b/assets/sapcli/cli/app.py
index 62806d2..147c3e0 100644
--- a/assets/sapcli/cli/app.py
+++ b/assets/sapcli/cli/app.py
@@ -37,6 +37,10 @@ from sapcli.commands import (
     cmd_activate,
     cmd_upload,
     cmd_syntax_check,
+    cmd_unit_test,
+    cmd_history,
+    cmd_clone,
+    cmd_enhancement,
 )
 from sapcli.auth import cmd_auth_login, cmd_auth_logout, cmd_auth_status
 from sapcli.exceptions import SapCliError, ConfigError
@@ -101,6 +105,15 @@ def main() -> None:
             cmd_auth_status(args)
         return
 
+    # clone 自行按 --from/--to profile 构建源/目标连接，跳过默认登录
+    if args.command == "clone":
+        try:
+            cmd_clone(args, None)
+        except SapCliError as e:
+            print(f"\n  ✗ {e}")
+            sys.exit(1)
+        return
+
     # 加载配置
     try:
         sap_cfg, loaded_from = load_config(args.config, profile=getattr(args, "profile", None))
@@ -146,6 +159,9 @@ def main() -> None:
         "show-table": cmd_show_table,
         "read-table": cmd_read_table,
         "run-program": cmd_run_program,
+        "unit-test": cmd_unit_test,
+        "history": cmd_history,
+        "enhancement": cmd_enhancement,
     }
 
     # 批量 sync 参数校验
diff --git a/assets/sapcli/cli/parser.py b/assets/sapcli/cli/parser.py
index 13a534f..7528586 100644
--- a/assets/sapcli/cli/parser.py
+++ b/assets/sapcli/cli/parser.py
@@ -260,4 +260,27 @@ CDS View:
     p_run = subparsers.add_parser("run-program", help="远程执行 ABAP 程序 (SA38)")
     p_run.add_argument("--name", required=True, help="程序名")
 
+    # ── unit-test ──
+    sp_unit = subparsers.add_parser("unit-test", help="运行 ABAP Unit 测试")
+    sp_unit.add_argument("--name", required=True, help="对象名称")
+    sp_unit.add_argument("--type", required=True, help="对象类型")
+
+    # ── history ──
+    sp_history = subparsers.add_parser("history", help="查看对象版本历史")
+    sp_history.add_argument("--name", required=True, help="对象名称")
+    sp_history.add_argument("--type", required=True, help="对象类型")
+
+    # ── clone ──
+    sp_clone = subparsers.add_parser("clone", help="跨系统克隆对象")
+    sp_clone.add_argument("--name", required=True, help="对象名称")
+    sp_clone.add_argument("--type", required=True, help="对象类型")
+    sp_clone.add_argument("--from", dest="from_profile", required=True, help="源系统 profile")
+    sp_clone.add_argument("--to", dest="to_profile", required=True, help="目标系统 profile")
+    sp_clone.add_argument("--corr_nr", default=None, help="目标系统的传输请求号")
+
+    # ── enhancement ──
+    sp_enh = subparsers.add_parser("enhancement", help="查询对象的增强实现")
+    sp_enh.add_argument("--name", required=True, help="对象名称")
+    sp_enh.add_argument("--type", required=True, help="对象类型")
+
     return parser
diff --git a/assets/sapcli/client/_ddic.py b/assets/sapcli/client/_ddic.py
index 719322c..bef55be 100644
--- a/assets/sapcli/client/_ddic.py
+++ b/assets/sapcli/client/_ddic.py
@@ -12,6 +12,41 @@ from sapcli.types import ObjectTypeConfig, get_type_config
 logger = logging.getLogger("sapcli.client")
 
 
+def _local(tag: str) -> str:
+    """返回 XML 标签/属性名的本地部分（去掉 ``{namespace}`` 前缀）。"""
+    if tag and tag[0] == "{":
+        return tag.split("}", 1)[1]
+    return tag
+
+
+def _attr_local(el: ET.Element, name: str) -> str:
+    """按本地名查找元素属性值（忽略命名空间）。
+
+    例如 ``adtcore:name`` 与 ``name`` 都能匹配 ``name``。
+    """
+    for key, val in el.attrib.items():
+        if _local(key) == name:
+            return val
+    return ""
+
+
+def _find_local(container: ET.Element, name: str) -> ET.Element | None:
+    """返回容器（含自身）下首个本地标签名为 ``name`` 的元素。"""
+    for el in container.iter():
+        if _local(el.tag) == name:
+            return el
+    return None
+
+
+# ADT lock 端点返回 ABAP 结构 XML。DDIC 对象（domain/dataelement/table/structure）
+# 的 lock 端点对默认 Accept: */* 返回 HTTP 406，必须显式请求 lock 结果类型。
+# 参考 abap-adt-api objectcontents.ts 的 lock 实现。
+LOCK_RESULT_ACCEPT = (
+    "application/*,application/vnd.sap.as+xml;charset=UTF-8;"
+    "dataname=com.sap.adt.lock.result"
+)
+
+
 class DdicMixin:
     """Object creation / deletion, DDIC operations, CDS, packages, ATC, pretty-print."""
 
@@ -24,7 +59,8 @@ class DdicMixin:
         obj_uri: str,
         corr_nr: str | None = None,
     ) -> tuple[bool, str]:
-        lock_handle, _ = self.lock(obj_uri, corr_nr)
+        # DDIC 对象的 lock 端点对 Accept: */* 返回 406，需传 lock 结果专用 Accept 头
+        lock_handle, _ = self.lock(obj_uri, corr_nr, accept=LOCK_RESULT_ACCEPT)
         url = f"{self.host}{obj_uri}"
         params: dict[str, str] = {"lockHandle": lock_handle}
         if corr_nr:
@@ -193,6 +229,19 @@ class DdicMixin:
                 f'<adtcore:packageRef adtcore:name="{package}"/>'
                 "</tabl:table>"
             )
+        elif obj_type == "structure":
+            # 结构体（TABL/DS）：参考 table，但使用 structures 命名空间
+            return (
+                '<?xml version="1.0" encoding="UTF-8"?>'
+                '<struc:structure xmlns:struc="http://www.sap.com/adt/dictionary/structures"'
+                ' xmlns:adtcore="http://www.sap.com/adt/core"'
+                f' adtcore:name="{name}"'
+                f' adtcore:type="TABL/DS"'
+                f' adtcore:description="{desc}"'
+                ' adtcore:language="EN">'
+                f'<adtcore:packageRef adtcore:name="{package}"/>'
+                "</struc:structure>"
+            )
         elif obj_type == "tabletype":
             return (
                 '<?xml version="1.0" encoding="UTF-8"?>'
@@ -204,6 +253,75 @@ class DdicMixin:
                 f'<adtcore:packageRef adtcore:name="{package}"/>'
                 "</ttyp:abapTableType>"
             )
+        elif obj_type == "include":
+            # POST /programs/includes/{name} — include 使用 programs/includes 命名空间，
+            # 不能复用 report 的 <program:abapProgram>（否则端点返回 400）。
+            # 参考 abap-adt-api objectcreator.ts:
+            #   rootName="include:abapInclude"
+            #   nameSpace="http://www.sap.com/adt/programs/includes"
+            return (
+                '<?xml version="1.0" encoding="UTF-8"?>'
+                '<include:abapInclude xmlns:include="http://www.sap.com/adt/programs/includes"'
+                ' xmlns:adtcore="http://www.sap.com/adt/core"'
+                f' adtcore:name="{name}"'
+                ' adtcore:type="PROG/I"'
+                f' adtcore:description="{desc}">'
+                f'<adtcore:packageRef adtcore:name="{package}"/>'
+                "</include:abapInclude>"
+            )
+        elif obj_type == "messageclass":
+            # POST /oo/t100/messages/classes/{name} — body 含 class name + description
+            # // TODO: verify XML structure on live SAP system
+            return (
+                '<?xml version="1.0" encoding="UTF-8"?>'
+                '<msgcls:t100MessageClass xmlns:msgcls="http://www.sap.com/adt/t100/message/classes"'
+                ' xmlns:adtcore="http://www.sap.com/adt/core"'
+                f' adtcore:name="{name}"'
+                ' adtcore:type="MSAG"'
+                f' adtcore:description="{desc}">'
+                f'<adtcore:packageRef adtcore:name="{package}"/>'
+                "</msgcls:t100MessageClass>"
+            )
+        elif obj_type == "view":
+            # POST /ddic/views/{name}（数据库视图）— body 结构参考 table 的创建
+            # // TODO: verify XML structure on live SAP system
+            return (
+                '<?xml version="1.0" encoding="UTF-8"?>'
+                '<view:view xmlns:view="http://www.sap.com/adt/dictionary/views"'
+                ' xmlns:adtcore="http://www.sap.com/adt/core"'
+                f' adtcore:name="{name}"'
+                f' adtcore:type="VIEW"'
+                f' adtcore:description="{desc}"'
+                ' adtcore:language="EN">'
+                f'<adtcore:packageRef adtcore:name="{package}"/>'
+                "</view:view>"
+            )
+        elif obj_type == "searchhelp":
+            # POST /ddic/searchhelps/{name} — body 含 search help 基本定义
+            # // TODO: verify XML structure on live SAP system
+            return (
+                '<?xml version="1.0" encoding="UTF-8"?>'
+                '<shlp:searchHelp xmlns:shlp="http://www.sap.com/adt/dictionary/searchhelps"'
+                ' xmlns:adtcore="http://www.sap.com/adt/core"'
+                f' adtcore:name="{name}"'
+                f' adtcore:type="SHLP"'
+                f' adtcore:description="{desc}">'
+                f'<adtcore:packageRef adtcore:name="{package}"/>'
+                "</shlp:searchHelp>"
+            )
+        elif obj_type == "lockobject":
+            # POST /ddic/lockobjects/{name} — body 含 lock mode + table name
+            # // TODO: verify XML structure on live SAP system (lock mode + table name)
+            return (
+                '<?xml version="1.0" encoding="UTF-8"?>'
+                '<lock:lockObject xmlns:lock="http://www.sap.com/adt/dictionary/lockobjects"'
+                ' xmlns:adtcore="http://www.sap.com/adt/core"'
+                f' adtcore:name="{name}"'
+                f' adtcore:type="LOCK"'
+                f' adtcore:description="{desc}">'
+                f'<adtcore:packageRef adtcore:name="{package}"/>'
+                "</lock:lockObject>"
+            )
         raise ValueError(f"不支持的对象类型: {obj_type}")
 
     # ------------------------------------------------------------------
@@ -222,6 +340,31 @@ class DdicMixin:
         src_uri = config.format_src_uri(name.lower())
 
         if obj_type in ("table", "structure"):
+            # 先 POST 集合端点创建对象实体，再 PUT 写入 DDL 定义。
+            # 之前直接 _put_ddl_source，PUT 到尚未创建的对象 /source/main 返回 405。
+            obj_name = name.upper()
+            body = self._build_create_body(obj_type, obj_name, obj_name)
+            collection_url = config.collection_uri
+            params: dict[str, str] = {}
+            if corr_nr:
+                params["corrNr"] = corr_nr
+            hdrs = self._headers(config.create_content_type)
+            logger.info(
+                "CREATE DDIC ENTITY: POST %s name=%s",
+                collection_url,
+                obj_name,
+            )
+            resp = self.session.post(
+                f"{self.host}{collection_url}",
+                headers=hdrs,
+                params=params,
+                data=body.encode("utf-8"),
+            )
+            logger.info("CREATE DDIC ENTITY RESPONSE: HTTP %s", resp.status_code)
+            if resp.status_code >= 400:
+                raise CreateError(
+                    f"创建 DDIC 对象实体失败: HTTP {resp.status_code} — {resp.text[:500]}"
+                )
             self._put_ddl_source(src_uri, definition_body, "", corr_nr)
         else:
             obj_name = name.upper()
@@ -754,3 +897,288 @@ class DdicMixin:
         logger.info("RUN PROGRAM RESPONSE: HTTP %s (%d bytes)", resp.status_code, len(resp.content))
         resp.raise_for_status()
         return resp.text
+
+    # ------------------------------------------------------------------
+    #  ABAP Unit tests
+    # ------------------------------------------------------------------
+
+    def run_unit_test(self, obj_uri: str) -> dict[str, Any]:
+        """执行 ABAP Unit 测试。
+
+        Args:
+            obj_uri: 被测对象的 ADT URI。
+
+        Returns:
+            ``{"summary": {...}, "classes": [{"name", "methods": [...]}]}``。
+            每个方法项含 ``name``, ``duration``, ``alert``（失败原因）, ``line``。
+        """
+        url = f"{self.host}/sap/bc/adt/abapunit/testruns"
+        body = (
+            '<?xml version="1.0" encoding="UTF-8"?>'
+            '<aunit:runConfiguration xmlns:aunit="http://www.sap.com/adt/aunit">'
+            "<external><coverage active=\"false\"/></external>"
+            "<options>"
+            '<uriType value="semantic"/>'
+            '<testDeterminationStrategy sameProgram="true" assignedTests="false"/>'
+            '<testRiskLevels harmless="true" dangerous="true" critical="true"/>'
+            '<testDurations short="true" medium="true" long="true"/>'
+            '<withNavigationUri enabled="true"/>'
+            "</options>"
+            '<adtcore:objectSets xmlns:adtcore="http://www.sap.com/adt/core">'
+            '<objectSet kind="inclusive">'
+            "<adtcore:objectReferences>"
+            f'<adtcore:objectReference adtcore:uri="{obj_uri}"/>'
+            "</adtcore:objectReferences>"
+            "</objectSet>"
+            "</adtcore:objectSets>"
+            "</aunit:runConfiguration>"
+        )
+        hdrs = self._headers("application/*")
+        hdrs["Accept"] = "application/*"
+        logger.info("RUN UNIT TEST: POST %s uri=%s", url, obj_uri)
+        resp = self.session.post(url, headers=hdrs, data=body.encode("utf-8"))
+        logger.info("RUN UNIT TEST RESPONSE: HTTP %s", resp.status_code)
+        resp.raise_for_status()
+        return self._parse_aunit_result(resp.content)
+
+    def _parse_aunit_result(self, content: bytes) -> dict[str, Any]:
+        """解析 ABAP Unit 测试结果 XML。
+
+        响应结构（aunit + adtcore 命名空间）::
+
+            <aunit:runResult>
+              <summary tests="3" failures="1" errors="0" skipped="0" duration="450"/>
+              <program adtcore:name="...">
+                <testClasses>
+                  <testClass adtcore:name="ZCL_MY_TEST">
+                    <testMethods>
+                      <testMethod adtcore:name="test_foo" duration="0.45">
+                        <alert kind="t" title="assertion error">
+                          <stackInfo><info line="42"/></stackInfo>
+                        </alert>
+                      </testMethod>
+                    </testMethods>
+                  </testClass>
+                </testClasses>
+              </program>
+            </aunit:runResult>
+
+        解析逻辑按本地标签名匹配，兼容命名空间前缀变化。
+        """
+        # TODO: verify XML structure on live SAP system
+        root = ET.fromstring(content)
+
+        summary = {
+            "tests": "0", "failures": "0", "errors": "0",
+            "skipped": "0", "duration": "0",
+        }
+        summary_el = _find_local(root, "summary")
+        if summary_el is not None:
+            for key in summary:
+                summary[key] = summary_el.attrib.get(key, summary[key])
+
+        classes: list[dict[str, Any]] = []
+        for tc in root.iter():
+            if _local(tc.tag) != "testClass":
+                continue
+            cls_name = _attr_local(tc, "name")
+            methods: list[dict[str, str]] = []
+            for tm in tc.iter():
+                if _local(tm.tag) != "testMethod":
+                    continue
+                m_name = _attr_local(tm, "name")
+                duration = tm.attrib.get("duration", "")
+                alert_title = ""
+                alert_line = ""
+                for alert in tm.iter():
+                    if _local(alert.tag) != "alert":
+                        continue
+                    if not alert_title:
+                        alert_title = alert.attrib.get("title", "")
+                    info = _find_local(alert, "info")
+                    if info is not None:
+                        line = info.attrib.get("line", "")
+                        if line:
+                            alert_line = line
+                methods.append({
+                    "name": m_name,
+                    "duration": duration,
+                    "alert": alert_title,
+                    "line": alert_line,
+                })
+            classes.append({"name": cls_name, "methods": methods})
+
+        return {"summary": summary, "classes": classes}
+
+    # ------------------------------------------------------------------
+    #  Version history
+    # ------------------------------------------------------------------
+
+    def get_object_versions(self, obj_uri: str) -> list[dict[str, str]]:
+        """查询对象的版本历史。
+
+        Args:
+            obj_uri: 对象 ADT URI。
+
+        Returns:
+            版本列表，每项含 ``version``, ``author``, ``date``, ``versionTitle``。
+        """
+        versions_href = self._get_versions_link(obj_uri)
+        if not versions_href:
+            return []
+
+        url = (
+            versions_href
+            if versions_href.startswith("http")
+            else f"{self.host}{versions_href}"
+        )
+        hdrs = self._headers()
+        hdrs["Accept"] = "application/xml"
+        logger.info("GET VERSIONS: GET %s", url)
+        resp = self.session.get(url, headers=hdrs)
+        logger.info("GET VERSIONS RESPONSE: HTTP %s", resp.status_code)
+        resp.raise_for_status()
+        return self._parse_versions(resp.content)
+
+    def _get_versions_link(self, obj_uri: str) -> str | None:
+        """GET 对象结构 XML，提取 versions 关系链接的 href。"""
+        url = f"{self.host}{obj_uri}"
+        hdrs = self._headers()
+        hdrs["Accept"] = "application/xml"
+        logger.info("GET OBJECT STRUCTURE: GET %s", url)
+        resp = self.session.get(url, headers=hdrs)
+        logger.info("GET OBJECT STRUCTURE RESPONSE: HTTP %s", resp.status_code)
+        if resp.status_code != 200:
+            return None
+        try:
+            root = ET.fromstring(resp.content)
+        except ET.ParseError:
+            return None
+        for el in root.iter():
+            if _local(el.tag) != "link":
+                continue
+            if "versions" in el.attrib.get("rel", ""):
+                href = el.attrib.get("href", "")
+                if href:
+                    return href
+        return None
+
+    def _parse_versions(self, content: bytes) -> list[dict[str, str]]:
+        """解析版本历史 feed。
+
+        典型结构（Atom feed，每个 entry 含版本元数据属性）::
+
+            <atom:feed>
+              <atom:entry>
+                <app:control>
+                  <d:version d:versionId="0001" d:author="DEVUSER"
+                             d:date="2026-06-10T14:20:00" d:versionTitle="Initial"/>
+                </app:control>
+              </atom:entry>
+            </atom:feed>
+
+        按本地名（忽略命名空间）匹配属性，兼容 ``versionId`` / ``version``。
+        """
+        # TODO: verify XML structure on live SAP system
+        try:
+            root = ET.fromstring(content)
+        except ET.ParseError:
+            return []
+
+        fields = ("version", "author", "date", "versionTitle")
+        alias = {"versionId": "version"}
+
+        def extract(container: ET.Element) -> dict[str, str]:
+            v = {f: "" for f in fields}
+            for el in container.iter():
+                for key, val in el.attrib.items():
+                    field = alias.get(_local(key), _local(key))
+                    if field in fields and not v[field]:
+                        v[field] = val
+            return v
+
+        entries = [e for e in root.iter() if _local(e.tag) == "entry"]
+        if entries:
+            return [extract(e) for e in entries]
+
+        # 回退：无 entry 时，凡携带 version/versionId 的元素各成一行
+        versions: list[dict[str, str]] = []
+        for el in root.iter():
+            if any(_local(k) in ("version", "versionId") for k in el.attrib):
+                versions.append(extract(el))
+        return versions
+
+    # ------------------------------------------------------------------
+    #  Enhancements
+    # ------------------------------------------------------------------
+
+    def get_enhancements(self, obj_uri: str) -> list[dict[str, Any]]:
+        """查询对象的增强实现（ENHO）。
+
+        Args:
+            obj_uri: 被增强对象的 ADT URI。
+
+        Returns:
+            增强实现列表，每项含 ``name``, ``type``, ``enhanced_name``,
+            ``enhanced_type``, ``elements``（含 ``name``/``type``/``mode``/``replacing``）。
+        """
+        url = f"{self.host}/sap/bc/adt/enhancements"
+        body = (
+            '<?xml version="1.0" encoding="UTF-8"?>'
+            '<enh:enhancementSearch xmlns:enh="http://www.sap.com/adt/enhancements"'
+            ' xmlns:adtcore="http://www.sap.com/adt/core">'
+            "<adtcore:objectReferences>"
+            f'<adtcore:objectReference adtcore:uri="{obj_uri}"/>'
+            "</adtcore:objectReferences>"
+            "</enh:enhancementSearch>"
+        )
+        hdrs = self._headers()
+        logger.info("GET ENHANCEMENTS: POST %s uri=%s", url, obj_uri)
+        resp = self.session.post(url, headers=hdrs, data=body.encode("utf-8"))
+        logger.info("GET ENHANCEMENTS RESPONSE: HTTP %s", resp.status_code)
+        resp.raise_for_status()
+        return self._parse_enhancements(resp.content)
+
+    def _parse_enhancements(self, content: bytes) -> list[dict[str, Any]]:
+        """解析增强实现列表 XML。
+
+        元素标签名与命名空间在不同 SAP 版本差异较大，故按本地名 + ENHO 类型码
+        匹配增强实现，再在其下查找被增强对象与插件元素。
+        """
+        # TODO: verify XML structure on live SAP system
+        try:
+            root = ET.fromstring(content)
+        except ET.ParseError:
+            return []
+
+        results: list[dict[str, Any]] = []
+        for el in root.iter():
+            local = _local(el.tag)
+            otype = _attr_local(el, "type")
+            is_enh = local in (
+                "enhancement", "enhancementImplementation", "enhancementSpotUse",
+            ) or "ENHO" in otype
+            if not is_enh:
+                continue
+
+            enhanced_obj = _find_local(el, "enhancedObject")
+            if enhanced_obj is None:
+                enhanced_obj = _find_local(el, "enhanced")
+            elements: list[dict[str, str]] = []
+            for pe in el.iter():
+                if _local(pe.tag) not in ("pluginElement", "element", "sourceCodePluginElement"):
+                    continue
+                elements.append({
+                    "name": _attr_local(pe, "elementName") or _attr_local(pe, "name"),
+                    "type": _attr_local(pe, "elementType") or _attr_local(pe, "type"),
+                    "mode": _attr_local(pe, "mode"),
+                    "replacing": _attr_local(pe, "replacing"),
+                })
+            results.append({
+                "name": _attr_local(el, "name"),
+                "type": otype or "ENHO",
+                "enhanced_name": _attr_local(enhanced_obj, "name") if enhanced_obj is not None else "",
+                "enhanced_type": _attr_local(enhanced_obj, "type") if enhanced_obj is not None else "",
+                "elements": elements,
+            })
+        return results
diff --git a/assets/sapcli/commands/__init__.py b/assets/sapcli/commands/__init__.py
index cff82db..7737542 100644
--- a/assets/sapcli/commands/__init__.py
+++ b/assets/sapcli/commands/__init__.py
@@ -60,6 +60,18 @@ from sapcli.commands.upload import (
 from sapcli.commands.syntax_check import (
     cmd_syntax_check,
 )
+from sapcli.commands.unit_test import (
+    cmd_unit_test,
+)
+from sapcli.commands.history import (
+    cmd_history,
+)
+from sapcli.commands.clone import (
+    cmd_clone,
+)
+from sapcli.commands.enhancement import (
+    cmd_enhancement,
+)
 
 __all__ = [
     "cmd_create",
@@ -88,4 +100,8 @@ __all__ = [
     "cmd_activate",
     "cmd_upload",
     "cmd_syntax_check",
+    "cmd_unit_test",
+    "cmd_history",
+    "cmd_clone",
+    "cmd_enhancement",
 ]
diff --git a/assets/sapcli/commands/clone.py b/assets/sapcli/commands/clone.py
new file mode 100644
index 0000000..67e6b5c
--- /dev/null
+++ b/assets/sapcli/commands/clone.py
@@ -0,0 +1,128 @@
+"""clone 命令 — 跨系统克隆对象（下载源系统 → 上传目标系统）。"""
+from __future__ import annotations
+
+import argparse
+import logging
+import os
+import tempfile
+
+from sapcli.client import ADTClient
+from sapcli.commands.crud import _sync_single
+from sapcli.config import load_config
+from sapcli.exceptions import ConfigError, InvalidNameError, ObjectNotFoundError, SapCliError
+from sapcli.types import get_type_config, parse_object_name
+
+logger = logging.getLogger("sapcli.commands.clone")
+
+
+def _make_profile_client(config_path: str | None, profile: str, verify_ssl: bool = False) -> ADTClient:
+    """按 profile 加载配置并建立已登录的 ADT 客户端。"""
+    sap_cfg, _ = load_config(config_path, profile=profile)
+    client = ADTClient(
+        sap_cfg.host, sap_cfg.client, sap_cfg.user, sap_cfg.password,
+        verify_ssl=verify_ssl,
+    )
+    client.login()
+    return client
+
+
+def cmd_clone(args: argparse.Namespace, client: ADTClient) -> None:
+    """从一个系统下载对象，上传到另一个系统。
+
+    注意：``client`` 参数在本命令中被忽略；源/目标客户端分别按
+    ``--from`` / ``--to`` profile 构建。
+    """
+    name: str = args.name
+    obj_type: str = args.type
+    from_profile: str = args.from_profile
+    to_profile: str = args.to_profile
+    corr_nr: str | None = getattr(args, "corr_nr", None)
+    config_path: str | None = getattr(args, "config", None)
+    verify_ssl: bool = getattr(args, "verify_ssl", False)
+
+    parsed = parse_object_name(name, obj_type)
+    type_label = get_type_config(obj_type).label
+
+    if parsed.src_uri is None:
+        print(f"\n  ✗ {type_label}没有源代码，不支持 clone 操作")
+        raise InvalidNameError(f"{type_label}没有源代码，不支持 clone 操作")
+
+    print("=" * 60)
+    print("  跨系统克隆对象")
+    print("=" * 60)
+    print(f"  对象类型:   {type_label}")
+    print(f"  对象名称:   {parsed.display_name}")
+    print(f"  源系统:     {from_profile}")
+    print(f"  目标系统:   {to_profile}")
+    if corr_nr:
+        print(f"  目标传输请求: {corr_nr}")
+
+    # ── Step 1: 从源系统下载源码 ──
+    print(f"\n  → 连接源系统 ({from_profile})...")
+    try:
+        src_client = _make_profile_client(config_path, from_profile, verify_ssl)
+    except Exception as e:
+        print(f"  ✗ 连接源系统失败: {e}")
+        raise ConfigError(f"连接源系统失败: {e}") from e
+    print(f"  ✓ 已登录源系统")
+
+    try:
+        print(f"\n  → 检查源对象是否存在...")
+        if not src_client.object_exists(parsed.obj_uri):
+            print(f"  ✗ 源对象不存在: {parsed.display_name}")
+            raise ObjectNotFoundError(parsed.display_name, obj_type)
+        print("  ✓ 源对象存在")
+
+        print(f"  → 正在从源系统下载源代码...")
+        source = src_client.get_source(parsed.src_uri)
+        source = source.replace("\r\n", "\n").replace("\r", "\n")
+        print(f"  ✓ 下载成功 ({len(source)} 字符)")
+    finally:
+        src_client.session.close()
+
+    # 写入临时文件供 _sync_single 复用
+    tmp_fd, tmp_path = tempfile.mkstemp(suffix=".abap", prefix=f"clone_{parsed.file_base}_")
+    try:
+        with os.fdopen(tmp_fd, "w", encoding="utf-8") as f:
+            f.write(source)
+
+        # ── Step 2: 连接目标系统 ──
+        print(f"\n  → 连接目标系统 ({to_profile})...")
+        try:
+            tgt_client = _make_profile_client(config_path, to_profile, verify_ssl)
+        except Exception as e:
+            print(f"  ✗ 连接目标系统失败: {e}")
+            raise ConfigError(f"连接目标系统失败: {e}") from e
+        print(f"  ✓ 已登录目标系统")
+
+        try:
+            print(f"\n  → 检查目标对象是否存在...")
+            exists = tgt_client.object_exists(parsed.obj_uri)
+            if exists:
+                print("  ✓ 目标对象已存在（将覆盖）")
+            else:
+                print("  ℹ 目标对象不存在（将创建并同步）")
+
+            # ── Step 3: 同步到目标（不存在则自动创建 + 上传 + 激活）──
+            print(f"\n  → 同步到目标系统...")
+            success, error_msg, actual_corr = _sync_single(
+                name, obj_type, tmp_path, tgt_client, corr_nr=corr_nr,
+            )
+        finally:
+            tgt_client.session.close()
+    finally:
+        try:
+            os.unlink(tmp_path)
+        except OSError:
+            pass
+
+    if success:
+        print(f"\n  {'=' * 60}")
+        print(f"  ✓ 克隆完成: {parsed.display_name}")
+        print(f"     {from_profile}  →  {to_profile}")
+        if actual_corr:
+            print(f"     目标传输请求: {actual_corr}")
+        print(f"  {'=' * 60}")
+        return
+
+    raise SapCliError(error_msg or f"克隆失败: {parsed.display_name}")
diff --git a/assets/sapcli/commands/crud.py b/assets/sapcli/commands/crud.py
index 30bddd8..849f38f 100644
--- a/assets/sapcli/commands/crud.py
+++ b/assets/sapcli/commands/crud.py
@@ -56,6 +56,39 @@ DEFAULT_TEMPLATES: dict[str, str] = {
         '  METHODS: hello.\n'
         'ENDINTERFACE.\n'
     ),
+    # 以下类型不提供完整业务骨架，仅给出占位注释。
+    # 建议通过 --source 指定本地源码文件，或用 --definition 创建 DDIC 定义。
+    "include": (
+        '*&---------------------------------------------------------------------*\n'
+        '*&  Include           {name}\n'
+        '*&---------------------------------------------------------------------*\n'
+        '* Include 程序骨架：在此编写可被其它程序 INCLUDE 的 ABAP 片段。\n'
+        '* 提示：用 --source 指定本地源码文件可覆盖本模板。\n'
+    ),
+    "messageclass": (
+        '* Message Class {name}\n'
+        '* 消息类（T100）不包含 ABAP 源码，消息条目通过 SE91 维护。\n'
+        '* 提示：建议用 --definition 创建，或通过 SAP GUI (SE91) 维护消息。\n'
+    ),
+    "view": (
+        '* Database View {name}\n'
+        '* 数据库视图 DDL 骨架（基础 SELECT 形式，按需替换）：\n'
+        '*   SELECT <字段列表>\n'
+        '*     FROM <主表>\n'
+        '*     [JOIN <关联表> ON <条件>]\n'
+        '*     [WHERE <过滤条件>]\n'
+        '* 提示：用 --source 指定完整视图定义可覆盖本模板。\n'
+    ),
+    "searchhelp": (
+        '* Search Help {name}\n'
+        '* 搜索帮助不包含 ABAP 源码，定义含数据源与显示字段。\n'
+        '* 提示：建议用 --definition 创建，或通过 SAP GUI (SE11) 维护。\n'
+    ),
+    "lockobject": (
+        '* Lock Object {name}\n'
+        '* 锁对象不包含 ABAP 源码，定义含锁定模式与主表。\n'
+        '* 提示：建议用 --definition 创建，或通过 SAP GUI (SE11) 维护。\n'
+    ),
 }
 
 
@@ -92,7 +125,7 @@ def cmd_download(args: argparse.Namespace, client: ADTClient) -> None:
     print(f"  保存路径: {save_dir}")
 
     print(f"\n  → 检查对象是否存在...")
-    if not client.object_exists(parsed.obj_uri):
+    if not client.object_exists(parsed.exists_uri or parsed.obj_uri):
         print(f"  ✗ 对象不存在: {parsed.display_name}")
         print(f"     请确认名称和类型是否正确")
         raise ObjectNotFoundError(parsed.display_name, obj_type)
@@ -210,7 +243,7 @@ def _sync_single(
 
     if not quiet:
         print(f"\n  → 检查对象是否存在...")
-    if not client.object_exists(parsed.obj_uri):
+    if not client.object_exists(parsed.exists_uri or parsed.obj_uri):
         if not quiet:
             print(f"  ℹ 对象不存在，自动创建空对象...")
         try:
@@ -386,6 +419,15 @@ def cmd_info(args: argparse.Namespace, client: ADTClient) -> None:
         "dataelement": "*/*",
         "table": "*/*",
         "tabletype": "*/*",
+        "structure": "application/vnd.sap.adt.ddic.structures.v1+xml",
+        "include": "application/vnd.sap.adt.programs.includes.v2+xml",
+        "cdsview": "application/vnd.sap.adt.ddic.ddls.v3+xml",
+        "messageclass": "application/vnd.sap.adt.t100.message.classes.v1+xml",
+        "view": "application/vnd.sap.adt.ddic.views.v1+xml",
+        "searchhelp": "application/vnd.sap.adt.ddic.searchhelps.v1+xml",
+        "lockobject": "application/vnd.sap.adt.ddic.lockobjects.v1+xml",
+        "dcl": "text/plain",
+        "ddlX": "text/plain",
     }
 
     print("=" * 60)
@@ -471,7 +513,7 @@ def cmd_delete(args: argparse.Namespace, client: ADTClient) -> None:
     print(f"  对象名称: {parsed.display_name}")
 
     print(f"\n  → 检查对象是否存在...")
-    if not client.object_exists(parsed.obj_uri):
+    if not client.object_exists(parsed.exists_uri or parsed.obj_uri):
         print(f"  ✗ 对象不存在: {parsed.display_name}")
         print(f"     请确认名称和类型是否正确")
         raise ObjectNotFoundError(parsed.display_name, obj_type)
@@ -639,7 +681,7 @@ def cmd_create(args: argparse.Namespace, client: ADTClient) -> None:
     print(f"\n  → 检查对象是否存在...")
     if obj_type != "functiongroup":
         parsed = parse_object_name(name, obj_type)
-        if client.object_exists(parsed.obj_uri):
+        if client.object_exists(parsed.exists_uri or parsed.obj_uri):
             print(f"  ✗ 对象已存在: {display_name}")
             raise ObjectAlreadyExistsError(display_name, type_label)
     else:
diff --git a/assets/sapcli/commands/enhancement.py b/assets/sapcli/commands/enhancement.py
new file mode 100644
index 0000000..47f7b71
--- /dev/null
+++ b/assets/sapcli/commands/enhancement.py
@@ -0,0 +1,69 @@
+"""enhancement 命令 — 查询对象的增强实现。"""
+from __future__ import annotations
+
+import argparse
+import logging
+
+from sapcli.client import ADTClient
+from sapcli.exceptions import ObjectNotFoundError
+from sapcli.types import get_type_config, parse_object_name
+
+logger = logging.getLogger("sapcli.commands.enhancement")
+
+
+def cmd_enhancement(args: argparse.Namespace, client: ADTClient) -> None:
+    """查询对象的增强实现（ENHO）。"""
+    name: str = args.name
+    obj_type: str = args.type
+
+    parsed = parse_object_name(name, obj_type)
+    type_label = get_type_config(obj_type).label
+
+    print("=" * 60)
+    print("  对象增强实现查询")
+    print("=" * 60)
+    print(f"  对象类型: {type_label}")
+    print(f"  对象名称: {parsed.display_name}")
+
+    print(f"\n  → 检查对象是否存在...")
+    if not client.object_exists(parsed.obj_uri):
+        print(f"  ✗ 对象不存在: {parsed.display_name}")
+        raise ObjectNotFoundError(parsed.display_name, obj_type)
+    print("  ✓ 对象存在")
+
+    print(f"\n  → 正在查询增强实现...")
+    try:
+        enhancements = client.get_enhancements(parsed.obj_uri)
+    except Exception as e:
+        print(f"  ✗ 查询增强实现失败: {e}")
+        return
+
+    if not enhancements:
+        print("  ℹ 未找到增强实现")
+        return
+
+    print(f"  ✓ 找到 {len(enhancements)} 个增强实现\n")
+    for enh in enhancements:
+        enh_name = enh.get("name", "")
+        enh_type = enh.get("type", "ENHO")
+        print(f"  Enhancement Implementation: {enh_name} ({enh_type})")
+
+        enhanced_name = enh.get("enhanced_name", "")
+        enhanced_type = enh.get("enhanced_type", "")
+        if enhanced_name:
+            print(f"    Enhanced Object: {enhanced_name} ({enhanced_type})")
+
+        elements = enh.get("elements", [])
+        for i, el in enumerate(elements, 1):
+            el_type = el.get("type", "")
+            el_name = el.get("name", "")
+            label = f"{el_type}: {el_name}" if el_type and el_name else (el_name or el_type)
+            print(f"    Element {i}: {label}")
+            extras = []
+            if el.get("mode"):
+                extras.append(f"Mode: {el['mode']}")
+            if el.get("replacing"):
+                extras.append(f"Replacing: {el['replacing']}")
+            if extras:
+                print(f"      {', '.join(extras)}")
+        print()
diff --git a/assets/sapcli/commands/history.py b/assets/sapcli/commands/history.py
new file mode 100644
index 0000000..b5d0098
--- /dev/null
+++ b/assets/sapcli/commands/history.py
@@ -0,0 +1,65 @@
+"""history 命令 — 查询对象版本历史。"""
+from __future__ import annotations
+
+import argparse
+import logging
+
+from sapcli.client import ADTClient
+from sapcli.exceptions import ObjectNotFoundError
+from sapcli.types import get_type_config, parse_object_name
+
+logger = logging.getLogger("sapcli.commands.history")
+
+
+def _format_date(value: str) -> str:
+    """ISO 日期 ``2026-06-15T10:30:00`` → ``2026-06-15 10:30:00``。"""
+    if not value:
+        return ""
+    return value.replace("T", " ").rstrip("Z").strip()
+
+
+def cmd_history(args: argparse.Namespace, client: ADTClient) -> None:
+    """查询对象的版本历史。"""
+    name: str = args.name
+    obj_type: str = args.type
+
+    parsed = parse_object_name(name, obj_type)
+    type_label = get_type_config(obj_type).label
+
+    print("=" * 60)
+    print("  对象版本历史")
+    print("=" * 60)
+    print(f"  对象类型: {type_label}")
+    print(f"  对象名称: {parsed.display_name}")
+
+    print(f"\n  → 检查对象是否存在...")
+    if not client.object_exists(parsed.obj_uri):
+        print(f"  ✗ 对象不存在: {parsed.display_name}")
+        raise ObjectNotFoundError(parsed.display_name, obj_type)
+    print("  ✓ 对象存在")
+
+    print(f"\n  → 正在查询版本历史...")
+    try:
+        versions = client.get_object_versions(parsed.obj_uri)
+    except Exception as e:
+        print(f"  ✗ 查询版本历史失败: {e}")
+        return
+
+    if not versions:
+        print("  ℹ 未找到版本历史")
+        return
+
+    print(f"  ✓ 找到 {len(versions)} 个版本\n")
+    print(
+        f"  {'Version':<10} {'Author':<12} {'Date':<22} Description"
+    )
+    print(
+        f"  {'─' * 10} {'─' * 12} {'─' * 22} {'─' * 30}"
+    )
+    for v in versions:
+        version = v.get("version", "") or "active"
+        author = v.get("author", "")
+        date = _format_date(v.get("date", ""))
+        title = v.get("versionTitle", "")
+        print(f"  {version:<10} {author:<12} {date:<22} {title}")
+    print()
diff --git a/assets/sapcli/commands/search.py b/assets/sapcli/commands/search.py
index a5a2bce..761b873 100644
--- a/assets/sapcli/commands/search.py
+++ b/assets/sapcli/commands/search.py
@@ -25,6 +25,10 @@ _TYPE_FILTER_MAP: dict[str, str] = {
     "cdsview": "DDLS/DF",
     "messageclass": "MSAG",
     "view": "VIEW",
+    "searchhelp": "SHLP",
+    "lockobject": "LOCK",
+    "dcl": "DCLS",
+    "ddlX": "DDLX",
 }
 
 
diff --git a/assets/sapcli/commands/unit_test.py b/assets/sapcli/commands/unit_test.py
new file mode 100644
index 0000000..6419183
--- /dev/null
+++ b/assets/sapcli/commands/unit_test.py
@@ -0,0 +1,83 @@
+"""unit-test 命令 — 执行 ABAP Unit 测试。"""
+from __future__ import annotations
+
+import argparse
+import logging
+
+from sapcli.client import ADTClient
+from sapcli.types import get_type_config, parse_object_name
+
+logger = logging.getLogger("sapcli.commands.unit_test")
+
+
+def _parse_duration(value: str) -> float:
+    """安全解析方法耗时（秒），无法解析返回 0.0。"""
+    try:
+        return float(value)
+    except (TypeError, ValueError):
+        return 0.0
+
+
+def cmd_unit_test(args: argparse.Namespace, client: ADTClient) -> None:
+    """执行 ABAP Unit 测试并汇总结果。"""
+    name: str = args.name
+    obj_type: str = args.type
+
+    parsed = parse_object_name(name, obj_type)
+    type_label = get_type_config(obj_type).label
+
+    print("=" * 60)
+    print("  ABAP Unit 测试")
+    print("=" * 60)
+    print(f"  对象类型: {type_label}")
+    print(f"  对象名称: {parsed.display_name}")
+
+    print(f"\n  → 正在执行 ABAP Unit 测试...")
+    try:
+        result = client.run_unit_test(parsed.obj_uri)
+    except Exception as e:
+        print(f"  ✗ 测试执行失败: {e}")
+        return
+
+    summary = result.get("summary", {})
+    classes = result.get("classes", [])
+
+    if not classes:
+        print("  ℹ 未找到测试类（对象可能不包含 ABAP Unit 测试）")
+        return
+
+    print()
+    for cls in classes:
+        cls_name = cls.get("name") or parsed.display_name
+        methods = cls.get("methods", [])
+        total_duration = sum(_parse_duration(m.get("duration", "")) for m in methods)
+        failed = [m for m in methods if m.get("alert")]
+
+        if not failed:
+            print(
+                f"  ✅ {cls_name}  {len(methods)} methods  "
+                f"{total_duration:.2f}s  PASSED"
+            )
+        else:
+            print(
+                f"  ❌ {cls_name}  {len(methods)} methods  "
+                f"{total_duration:.2f}s  FAILED"
+            )
+            for m in failed:
+                line_info = f" at line {m['line']}" if m.get("line") else ""
+                print(
+                    f"       method: {m['name']}  FAILED: "
+                    f"{m['alert']}{line_info}"
+                )
+
+    # 汇总
+    tests = summary.get("tests", "?")
+    failures = summary.get("failures", "0")
+    errors = summary.get("errors", "0")
+    skipped = summary.get("skipped", "0")
+    print(f"\n  {'─' * 50}")
+    print(
+        f"  合计: {tests} 个测试 | 失败 {failures} | 错误 {errors} | "
+        f"跳过 {skipped}"
+    )
+    print(f"  {'─' * 50}")
diff --git a/assets/sapcli/scanner.py b/assets/sapcli/scanner.py
index 75a7683..1dee01a 100644
--- a/assets/sapcli/scanner.py
+++ b/assets/sapcli/scanner.py
@@ -26,6 +26,8 @@ DIRECTORY_TYPE_MAP: dict[str, str] = {
     "views": "view",
     "searchhelps": "searchhelp",
     "lockobjects": "lockobject",
+    "dcl": "dcl",
+    "ddlx": "ddlX",
 }
 
 FUNCTIONS_DIR = "functions"
diff --git a/assets/sapcli/sorter.py b/assets/sapcli/sorter.py
index 93957a5..137ba5b 100644
--- a/assets/sapcli/sorter.py
+++ b/assets/sapcli/sorter.py
@@ -31,6 +31,9 @@ TYPE_PRIORITY: dict[str, int] = {
     "include": 78,
     "cdsview": 79,
     "report": 80,
+    # DCL/DDLX 依赖 CDS View，排在 cdsview(79)/report(80) 之后
+    "dcl": 81,
+    "ddlX": 82,
 }
 
 # 未注册类型的默认优先级
diff --git a/assets/sapcli/types.py b/assets/sapcli/types.py
index dc3d8e3..31c2254 100644
--- a/assets/sapcli/types.py
+++ b/assets/sapcli/types.py
@@ -14,6 +14,10 @@ class ObjectTypeConfig:
     collection_uri: str
     create_content_type: str
     has_source: bool = True
+    # 存在性检查专用端点模板；为 None 时回退到 obj_uri_template。
+    # 个别类型（如 tabletype）的 obj_uri 是 VIT 端点，对任意名称都返回 200，
+    # 无法区分存在/不存在，因此存在性检查需走标准 DDIC 端点。
+    exists_uri_template: str | None = None
 
     def format_obj_uri(self, name: str, **kwargs: str) -> str:
         return self.obj_uri_template.format(name=name, **kwargs)
@@ -23,6 +27,11 @@ class ObjectTypeConfig:
             return None
         return self.src_uri_template.format(name=name, **kwargs)
 
+    def format_exists_uri(self, name: str, **kwargs: str) -> str:
+        """格式化存在性检查端点。无专用模板时回退到 obj_uri_template。"""
+        template = self.exists_uri_template or self.obj_uri_template
+        return template.format(name=name, **kwargs)
+
     def format_collection_uri(self, **kwargs: str) -> str:
         return self.collection_uri.format(**kwargs)
 
@@ -125,6 +134,8 @@ TABLETYPE = _register(ObjectTypeConfig(
     collection_uri="/sap/bc/adt/ddic/tabletypes",
     create_content_type="application/vnd.sap.adt.ddic.tabletypes.v1+xml",
     has_source=False,
+    # VIT obj_uri 对任意名称都返回 200，存在性检查必须走 DDIC 端点
+    exists_uri_template="/sap/bc/adt/ddic/tabletypes/{name}",
 ))
 
 INCLUDE = _register(ObjectTypeConfig(
@@ -139,9 +150,30 @@ INCLUDE = _register(ObjectTypeConfig(
 CDSVIEW = _register(ObjectTypeConfig(
     key="cdsview",
     label="CDS视图(CDS VIEW)",
-    obj_uri_template="/sap/bc/adt/dds/ddl/sources/{name}",
-    src_uri_template="/sap/bc/adt/dds/ddl/sources/{name}/content",
-    collection_uri="/sap/bc/adt/dds/ddl/sources",
+    # 与 commands/cds.py 和 client/_ddic.py 保持一致：/ddic/ddlsources（NW 7.40 验证可用）
+    obj_uri_template="/sap/bc/adt/ddic/ddlsources/{name}",
+    src_uri_template="/sap/bc/adt/ddic/ddlsources/{name}/source/main",
+    collection_uri="/sap/bc/adt/ddic/ddlsources",
+    create_content_type="text/plain",
+))
+
+DCL = _register(ObjectTypeConfig(
+    key="dcl",
+    label="访问控制(DCL)",
+    # CDS Access Control，端点 /ddic/dclsources（参考 docs/dev/adt-endpoint-reference.md）
+    obj_uri_template="/sap/bc/adt/ddic/dclsources/{name}",
+    src_uri_template="/sap/bc/adt/ddic/dclsources/{name}/source/main",
+    collection_uri="/sap/bc/adt/ddic/dclsources",
+    create_content_type="text/plain",
+))
+
+DDLX = _register(ObjectTypeConfig(
+    key="ddlX",
+    label="元数据扩展(DDLX)",
+    # Metadata Extension，端点 /ddic/metadataextensions（参考 docs/dev/adt-endpoint-reference.md）
+    obj_uri_template="/sap/bc/adt/ddic/metadataextensions/{name}",
+    src_uri_template="/sap/bc/adt/ddic/metadataextensions/{name}/source/main",
+    collection_uri="/sap/bc/adt/ddic/metadataextensions",
     create_content_type="text/plain",
 ))
 
@@ -201,6 +233,9 @@ class ParsedName:
     src_uri: str | None
     display_name: str
     file_base: str
+    # 存在性检查专用端点；默认与 obj_uri 相同。tabletype 等类型的 obj_uri
+    # 不能用于存在性检查，需走标准 DDIC 端点。
+    exists_uri: str = ""
 
 
 def parse_object_name(name: str, obj_type: str) -> ParsedName:
@@ -221,9 +256,11 @@ def parse_object_name(name: str, obj_type: str) -> ParsedName:
             src_uri=cfg.format_src_uri(fm.lower(), group=group.lower()),
             display_name=name,
             file_base=fm.lower(),
+            exists_uri=cfg.format_exists_uri(fm.lower(), group=group.lower()),
         )
 
     # VIT 端点需要大写名称以返回完整元数据；去掉前导 /
+    # 但 VIT 对存在性检查无效（任意名称都返回 200），exists_uri 走 DDIC 端点（小写名）
     if obj_type == "tabletype":
         clean = name.lstrip("/")
         name_upper = clean.upper()
@@ -232,6 +269,7 @@ def parse_object_name(name: str, obj_type: str) -> ParsedName:
             src_uri=cfg.format_src_uri(name_upper),
             display_name=clean,
             file_base=clean.lower(),
+            exists_uri=cfg.format_exists_uri(clean.lower()),
         )
 
     name_lower = name.lower()
@@ -240,4 +278,5 @@ def parse_object_name(name: str, obj_type: str) -> ParsedName:
         src_uri=cfg.format_src_uri(name_lower),
         display_name=name,
         file_base=name_lower,
+        exists_uri=cfg.format_exists_uri(name_lower),
     )