fix: isolate startup tools and preview dialogs

backend/tests/test_startup_actions.py

@@ -6,14 +6,19 @@ from types import SimpleNamespace
 from fastapi import HTTPException
 from routes.assistants import _validate_startup_actions
 from schemas import AssistantUpsert
+from services.config_resolver import _runtime_tool_ids
 
 
-def startup_body(*, phase: str = "opening") -> AssistantUpsert:
+def startup_body(
+    *,
+    phase: str = "opening",
+    bind_tool: bool = False,
+) -> AssistantUpsert:
     return AssistantUpsert(
         name="启动动作测试",
         type="prompt",
         runtimeMode="pipeline",
-        toolIds=["tool_message"],
+        toolIds=["tool_message"] if bind_tool else [],
         startup={
             "executionMode": "sequential",
             "actions": [
@@ -45,20 +50,52 @@ class FakeSession:
         self.tool = tool
 
     async def get(self, _model, tool_id):
-        return self.tool if tool_id == self.tool.id else None
+        return self.tool if self.tool is not None and tool_id == self.tool.id else None
 
 
 class StartupActionValidationTests(unittest.IsolatedAsyncioTestCase):
+    def test_runtime_pool_includes_bound_and_startup_only_tools(self):
+        self.assertEqual(
+            _runtime_tool_ids(
+                ["conversation_tool", "shared_tool"],
+                {
+                    "actions": [
+                        {"tool_id": "opening_tool"},
+                        {"toolId": "shared_tool"},
+                    ]
+                },
+            ),
+            ["conversation_tool", "shared_tool", "opening_tool"],
+        )
+
     def test_realtime_rejects_startup_actions(self):
         with self.assertRaisesRegex(ValueError, "Realtime"):
             AssistantUpsert(
                 name="Realtime 启动动作",
                 type="prompt",
                 runtimeMode="realtime",
-                toolIds=["tool_message"],
                 startup=startup_body().startup,
             )
 
+    async def test_startup_tool_does_not_need_conversation_binding(self):
+        tool = SimpleNamespace(
+            id="tool_message",
+            name="重要提示",
+            function_name="show_message",
+            type="client",
+            status="active",
+            definition={
+                "config": {
+                    "wait_for_response": True,
+                    "response_wait_mode": "session",
+                }
+            },
+        )
+
+        body = startup_body(bind_tool=False)
+        await _validate_startup_actions(FakeSession(tool), body)
+        self.assertEqual(body.tool_ids, [])
+
     async def test_show_message_requires_session_wait(self):
         tool = SimpleNamespace(
             id="tool_message",