diff --git a/astrbot/core/pipeline/waking_check/stage.py b/astrbot/core/pipeline/waking_check/stage.py
index be792384e..fd4692354 100644
--- a/astrbot/core/pipeline/waking_check/stage.py
+++ b/astrbot/core/pipeline/waking_check/stage.py
@@ -189,9 +189,11 @@ class WakingCheckStage(Stage):
                         break
                 except Exception as e:
                     await event.send(
-                        MessageEventResult().message(
+                        MessageEventResult()
+                        .message(
                             f"插件 {star_map[handler.handler_module_path].name}: {e}",
-                        ),
+                        )
+                        .use_markdown(False),
                     )
                     event.stop_event()
                     passed = False
diff --git a/astrbot/core/platform/sources/dingtalk/dingtalk_adapter.py b/astrbot/core/platform/sources/dingtalk/dingtalk_adapter.py
index 9a07608c3..bae98a807 100644
--- a/astrbot/core/platform/sources/dingtalk/dingtalk_adapter.py
+++ b/astrbot/core/platform/sources/dingtalk/dingtalk_adapter.py
@@ -182,12 +182,15 @@ class DingtalkPlatformAdapter(Platform):
         abm.message_id = cast(str, message.message_id)
         abm.raw_message = message
 
+        leading_at_is_self = False
         if abm.type == MessageType.GROUP_MESSAGE:
             # 处理所有被 @ 的用户（包括机器人自己，因 at_users 已包含）
             if message.at_users:
-                for user in message.at_users:
+                for index, user in enumerate(message.at_users):
                     if id := self._id_to_sid(user.dingtalk_id):
                         abm.message.append(At(qq=id))
+                        if index == 0 and id == abm.self_id:
+                            leading_at_is_self = True
             abm.group_id = message.conversation_id
             abm.session_id = abm.group_id
         else:
@@ -232,10 +235,18 @@ class DingtalkPlatformAdapter(Platform):
                 )
                 contents: list[dict] = cast(list[dict], rtc.rich_text_list)
                 plain_parts: list[str] = []
-                for content in contents:
+                for index, content in enumerate(contents):
                     if "text" in content:
                         plain_text = cast(str, content.get("text") or "")
                         if plain_text:
+                            # HarmonyOS repeats the leading bot mention as a text
+                            # segment even though atUsers already represents it.
+                            if (
+                                index == 0
+                                and leading_at_is_self
+                                and plain_text.lstrip().startswith("@")
+                            ):
+                                continue
                             plain_parts.append(plain_text)
                             abm.message.append(Plain(plain_text))
                     elif "type" in content and content["type"] == "picture":
@@ -577,13 +588,17 @@ class DingtalkPlatformAdapter(Platform):
                 text = segment.text.strip()
                 if not text and not at_str:
                     continue
-                await send_message(
-                    msg_key="sampleMarkdown",
-                    msg_param={
-                        "title": "AstrBot",
-                        "text": f"{at_str} {text}".strip(),
-                    },
-                )
+                text = f"{at_str} {text}".strip()
+                if message_chain.use_markdown_ is False:
+                    await send_message(
+                        msg_key="sampleText",
+                        msg_param={"content": text},
+                    )
+                else:
+                    await send_message(
+                        msg_key="sampleMarkdown",
+                        msg_param={"title": "AstrBot", "text": text},
+                    )
             elif isinstance(segment, Image):
                 photo_url = segment.file or segment.url or ""
                 if photo_url.startswith(("http://", "https://")):
diff --git a/astrbot/core/star/filter/command.py b/astrbot/core/star/filter/command.py
index 31949b674..abf339fda 100755
--- a/astrbot/core/star/filter/command.py
+++ b/astrbot/core/star/filter/command.py
@@ -65,7 +65,7 @@ class CommandFilter(HandlerFilter):
 
     def init_handler_md(self, handle_md: StarHandlerMetadata) -> None:
         self.handler_md = handle_md
-        signature = inspect.signature(self.handler_md.handler)
+        signature = inspect.signature(self.handler_md.handler, eval_str=True)
         self.handler_params = {}  # 参数名 -> 参数类型，如果有默认值则为默认值
         idx = 0
         for k, v in signature.parameters.items():
diff --git a/tests/test_command_filter.py b/tests/test_command_filter.py
new file mode 100644
index 000000000..afd37a7c4
--- /dev/null
+++ b/tests/test_command_filter.py
@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+
+import pytest
+
+from astrbot.core.star.filter.command import CommandFilter
+
+
+async def postponed_annotations_handler(
+    self,
+    event,
+    machine: str,
+    retries: int = 1,
+) -> None:
+    pass
+
+
+def test_command_filter_resolves_postponed_annotations():
+    command_filter = CommandFilter(
+        "probe",
+        handler_md=SimpleNamespace(handler=postponed_annotations_handler),
+    )
+
+    assert command_filter.handler_params == {"machine": str, "retries": 1}
+    assert command_filter.validate_and_convert_params(
+        ["server-1", "2"],
+        command_filter.handler_params,
+    ) == {"machine": "server-1", "retries": 2}
+
+
+def test_command_filter_rejects_missing_postponed_required_param():
+    command_filter = CommandFilter(
+        "probe",
+        handler_md=SimpleNamespace(handler=postponed_annotations_handler),
+    )
+
+    with pytest.raises(ValueError, match="必要参数缺失"):
+        command_filter.validate_and_convert_params([], command_filter.handler_params)
diff --git a/tests/test_dingtalk_adapter.py b/tests/test_dingtalk_adapter.py
index aa1e638c8..818ebd115 100644
--- a/tests/test_dingtalk_adapter.py
+++ b/tests/test_dingtalk_adapter.py
@@ -1,8 +1,11 @@
 import asyncio
 import threading
 
+import dingtalk_stream
 import pytest
 
+from astrbot.api.message_components import At, Plain
+from astrbot.core.message.message_event_result import MessageChain
 from astrbot.core.platform.sources.dingtalk import dingtalk_adapter
 from astrbot.core.platform.sources.dingtalk.dingtalk_adapter import (
     DINGTALK_RECONNECT_INITIAL_DELAY,
@@ -12,6 +15,29 @@ from astrbot.core.platform.sources.dingtalk.dingtalk_adapter import (
 )
 
 
+def _dingtalk_group_message(**payload) -> dingtalk_stream.ChatbotMessage:
+    """Build a DingTalk group callback message for adapter tests.
+
+    Args:
+        **payload: Callback fields that vary between test cases.
+
+    Returns:
+        A parsed DingTalk chatbot message.
+    """
+    return dingtalk_stream.ChatbotMessage.from_dict(
+        {
+            "conversationId": "conversation",
+            "conversationType": "2",
+            "createAt": 1_700_000_000_000,
+            "msgId": "message",
+            "senderId": "sender",
+            "senderNick": "sender",
+            "chatbotUserId": "bot",
+            **payload,
+        }
+    )
+
+
 def test_dingtalk_reconnect_delay_uses_exponential_backoff():
     assert [_dingtalk_reconnect_delay(i) for i in range(1, 5)] == [
         10,
@@ -76,3 +102,120 @@ async def test_dingtalk_reconnect_delay_wakes_on_terminate(monkeypatch):
             await adapter.terminate()
             run_task.cancel()
             await asyncio.gather(run_task, return_exceptions=True)
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize(
+    ("use_markdown", "expected_key", "expected_param"),
+    [
+        (None, "sampleMarkdown", {"title": "AstrBot", "text": "first\nsecond"}),
+        (False, "sampleText", {"content": "first\nsecond"}),
+    ],
+)
+async def test_dingtalk_text_respects_markdown_mode(
+    use_markdown,
+    expected_key,
+    expected_param,
+):
+    sent = []
+    adapter = DingtalkPlatformAdapter.__new__(DingtalkPlatformAdapter)
+
+    async def capture_message(open_conversation_id, robot_code, msg_key, msg_param):
+        sent.append((open_conversation_id, robot_code, msg_key, msg_param))
+
+    adapter._send_group_message = capture_message
+    chain = MessageChain().message("first\nsecond").use_markdown(use_markdown)
+
+    await adapter._send_message_chain("group", "conversation", "robot", chain)
+
+    assert sent == [("conversation", "robot", expected_key, expected_param)]
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize(
+    "payload",
+    [
+        {
+            "atUsers": [{"dingtalkId": "bot"}],
+            "isInAtList": True,
+            "msgtype": "text",
+            "text": {"content": " /server"},
+        },
+        {
+            "atUsers": [{"dingtalkId": "bot"}],
+            "isInAtList": True,
+            "msgtype": "richText",
+            "content": {
+                "richText": [
+                    {"text": "@ExampleBot"},
+                    {"text": "/server"},
+                ]
+            },
+        },
+    ],
+)
+async def test_dingtalk_self_mention_produces_consistent_command_text(payload):
+    adapter = DingtalkPlatformAdapter.__new__(DingtalkPlatformAdapter)
+
+    result = await adapter.convert_msg(_dingtalk_group_message(**payload))
+
+    assert result.message_str == "/server"
+    assert len(result.message) == 2
+    assert isinstance(result.message[0], At)
+    assert result.message[0].qq == "bot"
+    assert isinstance(result.message[1], Plain)
+    assert result.message[1].text == "/server"
+
+
+@pytest.mark.asyncio
+async def test_dingtalk_rich_text_preserves_non_self_mention_text():
+    adapter = DingtalkPlatformAdapter.__new__(DingtalkPlatformAdapter)
+    message = _dingtalk_group_message(
+        atUsers=[{"dingtalkId": "another-user"}],
+        isInAtList=False,
+        msgtype="richText",
+        content={
+            "richText": [
+                {"text": "@AnotherUser"},
+                {"text": "/server"},
+            ]
+        },
+    )
+
+    result = await adapter.convert_msg(message)
+
+    assert result.message_str == "@AnotherUser/server"
+    assert len(result.message) == 3
+    assert isinstance(result.message[0], At)
+    assert result.message[0].qq == "another-user"
+    assert isinstance(result.message[1], Plain)
+    assert result.message[1].text == "@AnotherUser"
+    assert isinstance(result.message[2], Plain)
+    assert result.message[2].text == "/server"
+
+
+@pytest.mark.asyncio
+async def test_dingtalk_rich_text_preserves_other_leading_mention():
+    adapter = DingtalkPlatformAdapter.__new__(DingtalkPlatformAdapter)
+    message = _dingtalk_group_message(
+        atUsers=[{"dingtalkId": "another-user"}, {"dingtalkId": "bot"}],
+        isInAtList=True,
+        msgtype="richText",
+        content={
+            "richText": [
+                {"text": "@AnotherUser"},
+                {"text": "@ExampleBot"},
+                {"text": "/server"},
+            ]
+        },
+    )
+
+    result = await adapter.convert_msg(message)
+
+    assert result.message_str == "@AnotherUser@ExampleBot/server"
+    assert isinstance(result.message[0], At)
+    assert result.message[0].qq == "another-user"
+    assert isinstance(result.message[1], At)
+    assert result.message[1].qq == "bot"
+    assert isinstance(result.message[2], Plain)
+    assert result.message[2].text == "@AnotherUser"