feat(model): 日常模式默认模型可独立配置-通用需求

src/backend/bisheng/common/errcode/llm.py

@@ -25,3 +25,8 @@ class ServerAddError(BaseErrorCode):
 class WorkbenchEmbeddingError(BaseErrorCode):
     Code: int = 10810
     Msg: str = 'Please configure the workbench embedding model.'
+
+
+class WorkbenchChatDefaultModelError(BaseErrorCode):
+    Code: int = 10811
+    Msg: str = 'The daily-chat default model must be one of the configured workbench chat models.'

src/backend/bisheng/llm/domain/schemas.py

@@ -86,6 +86,12 @@ class WorkbenchModelConfig(BaseModel):
         default=None,
         description="Linsight default execution model id (single-select from models)",
     )
+    # Daily-chat (日常模式) default model — sibling of linsight_default_model_id,
+    # must be one of the configured ``models`` entries.
+    chat_default_model_id: str | None = Field(
+        default=None,
+        description="Daily-chat default model id (single-select from models)",
+    )
     # RetrieveembeddingModels
     embedding_model: WSModel | None = Field(default=None, description="embeddingModels")
     # Speech-to-text model

src/backend/bisheng/llm/domain/services/llm.py

@@ -19,6 +19,7 @@ from bisheng.common.errcode.llm import (
     ServerAddAllError,
     ServerAddError,
     ServerExistError,
+    WorkbenchChatDefaultModelError,
     WorkbenchEmbeddingError,
 )
 from bisheng.common.errcode.llm_tenant import (
@@ -115,6 +116,7 @@ def _workbench_model_ref_values(config: WorkbenchModelConfig) -> list[Any]:
     return [
         *(one.id for one in (config.models or [])),
         config.linsight_default_model_id,
+        config.chat_default_model_id,
         getattr(config.embedding_model, "id", None),
         getattr(config.asr_model, "id", None),
         getattr(config.tts_model, "id", None),
@@ -253,6 +255,7 @@ class LLMService:
                 [
                     *(one.id for one in (workbench_cfg.models or [])),
                     workbench_cfg.linsight_default_model_id,
+                    workbench_cfg.chat_default_model_id,
                     getattr(workbench_cfg.embedding_model, "id", None),
                     getattr(workbench_cfg.asr_model, "id", None),
                     getattr(workbench_cfg.tts_model, "id", None),
@@ -373,6 +376,8 @@ class LLMService:
             config.models = [one for one in config.models if is_allowed(one.id)]
         if not is_allowed(config.linsight_default_model_id):
             config.linsight_default_model_id = None
+        if not is_allowed(config.chat_default_model_id):
+            config.chat_default_model_id = None
         for field_name in ("embedding_model", "asr_model", "tts_model", "chat_title_llm"):
             ws_model = getattr(config, field_name)
             if ws_model is not None and not is_allowed(ws_model.id):
@@ -1361,6 +1366,7 @@ class LLMService:
                 # linsight_default_model_id is already a model-id string (F035),
                 # not a WSModel; pass it directly alongside the WSModel ids.
                 config_obj.linsight_default_model_id,
+                config_obj.chat_default_model_id,
                 *(
                     (ws.id if ws else None)
                     for ws in (
@@ -1391,6 +1397,18 @@ class LLMService:
         if config_obj.models is None:
             config_obj.models = config_old_obj.models
 
+        # chat_default_model_id must come from the configured (and, per the
+        # avalidate call above, accessible) daily-chat model list.
+        if config_obj.chat_default_model_id is not None:
+            chat_default_id = _coerce_model_id(config_obj.chat_default_model_id)
+            selectable_ids = {
+                model_id
+                for model_id in (_coerce_model_id(one.id) for one in (config_obj.models or []))
+                if model_id is not None
+            }
+            if chat_default_id is None or chat_default_id not in selectable_ids:
+                raise WorkbenchChatDefaultModelError()
+
         if config_obj.embedding_model:
             # Determine consistency
             if (

src/backend/test/llm/test_llm_share_fallback.py

@@ -370,6 +370,7 @@ async def test_workbench_getter_sanitizes_inherited_stale_model_refs():
             WSModel(id="30", name="deleted-model").model_dump(),
         ],
         "linsight_default_model_id": "20",
+        "chat_default_model_id": "30",
         "embedding_model": WSModel(id="10", name="root-embedding").model_dump(),
         "asr_model": WSModel(id="30", name="deleted-asr").model_dump(),
         "tts_model": WSModel(id="20", name="child-tts").model_dump(),
@@ -390,6 +391,7 @@ async def test_workbench_getter_sanitizes_inherited_stale_model_refs():
     assert blocked is False
     assert [one.id for one in (config.models or [])] == ["10"]
     assert config.linsight_default_model_id is None
+    assert config.chat_default_model_id is None
     assert config.embedding_model and config.embedding_model.id == "10"
     assert config.asr_model is None
     assert config.tts_model is None

src/backend/test/llm/test_workbench_update_merge.py

@@ -17,7 +17,7 @@ from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 
-from bisheng.common.errcode.llm import WorkbenchEmbeddingError
+from bisheng.common.errcode.llm import WorkbenchChatDefaultModelError, WorkbenchEmbeddingError
 from bisheng.llm.domain.schemas import WorkbenchModelConfig, WSModel
 from bisheng.llm.domain.services.llm import LLMService
 
@@ -93,3 +93,93 @@ async def test_invalid_embedding_model_id_returns_business_error(invalid_model_i
 
     assert exc_info.value.code == 10810
     mock_validate.assert_not_awaited()
+
+
+@pytest.mark.asyncio
+async def test_chat_default_model_id_persists_alongside_linsight_default():
+    """chat_default_model_id is a sibling of linsight_default_model_id — both
+    land in the same stored JSON without overwriting each other."""
+    incoming = WorkbenchModelConfig(
+        models=[WSModel(id="840", name="qwen3.7-max"), WSModel(id="841", name="deepseek-v4")],
+        linsight_default_model_id="840",
+        chat_default_model_id="841",
+        embedding_model=None,
+    )
+    persisted = await _run_and_capture(incoming)
+    assert persisted["linsight_default_model_id"] == "840"
+    assert persisted["chat_default_model_id"] == "841"
+
+
+@pytest.mark.asyncio
+async def test_chat_default_model_id_none_is_allowed():
+    """No daily-chat default configured is a valid state."""
+    incoming = WorkbenchModelConfig(
+        models=[WSModel(id="840", name="qwen3.7-max")],
+        chat_default_model_id=None,
+        embedding_model=None,
+    )
+    persisted = await _run_and_capture(incoming)
+    assert persisted["chat_default_model_id"] is None
+
+
+@pytest.mark.asyncio
+async def test_chat_default_model_id_must_come_from_models_list():
+    """A default outside the configured workbench chat model list is rejected."""
+    incoming = WorkbenchModelConfig(
+        models=[WSModel(id="840", name="qwen3.7-max")],
+        chat_default_model_id="999",
+        embedding_model=None,
+    )
+    with patch(
+        "bisheng.llm.domain.services.llm.avalidate_system_model_refs",
+        new=AsyncMock(),
+    ), patch(
+        "bisheng.llm.domain.services.llm.TenantSystemModelConfigDao.aresolve",
+        new=AsyncMock(return_value=(json.dumps(_OLD.model_dump()), False, False)),
+    ):
+        with pytest.raises(WorkbenchChatDefaultModelError) as exc_info:
+            await LLMService.update_workbench_llm(1, incoming, MagicMock(), tenant_id=1)
+
+    assert exc_info.value.code == 10811
+
+
+@pytest.mark.parametrize("invalid_model_id", ["", "null", "undefined", "0", "-1", "abc"])
+@pytest.mark.asyncio
+async def test_chat_default_model_id_rejects_non_model_values(invalid_model_id: str):
+    incoming = WorkbenchModelConfig(
+        models=[WSModel(id="840", name="qwen3.7-max")],
+        chat_default_model_id=invalid_model_id,
+        embedding_model=None,
+    )
+    with patch(
+        "bisheng.llm.domain.services.llm.avalidate_system_model_refs",
+        new=AsyncMock(),
+    ), patch(
+        "bisheng.llm.domain.services.llm.TenantSystemModelConfigDao.aresolve",
+        new=AsyncMock(return_value=(json.dumps(_OLD.model_dump()), False, False)),
+    ):
+        with pytest.raises(WorkbenchChatDefaultModelError):
+            await LLMService.update_workbench_llm(1, incoming, MagicMock(), tenant_id=1)
+
+
+@pytest.mark.asyncio
+async def test_chat_default_model_id_validated_against_merged_old_models():
+    """When the body omits ``models`` (merge-guard keeps the stored list), the
+    default is checked against that effective list — old id passes, new id not
+    in the stored list fails."""
+    # "727" exists only in the stored (_OLD) list.
+    incoming = WorkbenchModelConfig(chat_default_model_id="727", embedding_model=None)
+    persisted = await _run_and_capture(incoming)
+    assert persisted["chat_default_model_id"] == "727"
+    assert [m["id"] for m in persisted["models"]] == ["727", "774"]
+
+    incoming_bad = WorkbenchModelConfig(chat_default_model_id="840", embedding_model=None)
+    with patch(
+        "bisheng.llm.domain.services.llm.avalidate_system_model_refs",
+        new=AsyncMock(),
+    ), patch(
+        "bisheng.llm.domain.services.llm.TenantSystemModelConfigDao.aresolve",
+        new=AsyncMock(return_value=(json.dumps(_OLD.model_dump()), False, False)),
+    ):
+        with pytest.raises(WorkbenchChatDefaultModelError):
+            await LLMService.update_workbench_llm(1, incoming_bad, MagicMock(), tenant_id=1)

src/frontend/client/eslint-suppressions.json

@@ -3054,7 +3054,7 @@
   },
   "src/pages/appChat/useChatHelpers.ts": {
     "@typescript-eslint/no-explicit-any": {
-      "count": 12
+      "count": 11
     },
     "@typescript-eslint/no-unused-vars": {
       "count": 2

src/frontend/client/src/api/linsight.ts

@@ -98,6 +98,8 @@ export function getSelectableSkills(): Promise<SelectableSkill[]> {
 export interface LinsightModelConfig {
     models?: { id: string | number; name?: string; displayName?: string }[];
     linsight_default_model_id?: string | null;
+    /** Admin-configured default model for new daily-mode conversations. */
+    chat_default_model_id?: string | null;
 }
 
 export function getLinsightModelConfig(): Promise<LinsightModelConfig> {

src/frontend/client/src/hooks/useChatModelMemo.ts

@@ -1,5 +1,6 @@
 import { useEffect, useRef } from 'react';
 import { useRecoilState } from 'recoil';
+import { useGetWorkbenchModelsQuery } from '~/hooks/queries/queries';
 import store from '~/store';
 
 interface UserLike {
@@ -18,11 +19,13 @@ interface BsConfigLike {
 
 /**
  * Hydrate / persist the chatModel atom under the user-scoped
- * `bs:{uid}:chatModel` localStorage key. Falls back to the latest configured
- * model when nothing is saved or the saved id no longer exists. Used by every
- * chat surface that lets the user pick a model so the selection survives
- * page refresh and new tabs (and gets wiped on re-login alongside the rest
- * of `bs:*`).
+ * `bs:{uid}:chatModel` localStorage key. Resolution order for a fresh
+ * session: the user's last valid manual selection → the admin-configured
+ * daily-mode default (`chat_default_model_id` from /api/v1/llm/workbench) →
+ * the last configured model (compat for backends that predate the field).
+ * Used by every chat surface that lets the user pick a model so the selection
+ * survives page refresh and new tabs (and gets wiped on re-login alongside
+ * the rest of `bs:*`).
  */
 export default function useChatModelMemo(
   user: UserLike | null | undefined,
@@ -30,6 +33,7 @@ export default function useChatModelMemo(
 ) {
   const [chatModel, setChatModel] = useRecoilState(store.chatModel);
   const hydratedRef = useRef(false);
+  const { data: workbenchConfig, isLoading: workbenchLoading } = useGetWorkbenchModelsQuery();
 
   useEffect(() => {
     if (!bsConfig || !user?.id) return;
@@ -40,7 +44,18 @@ export default function useChatModelMemo(
       let target: ModelLike | undefined | null = savedModelId
         ? models.find((m) => String(m.id) === savedModelId)
         : null;
-      if (!target && models.length) target = models[models.length - 1];
+      if (!target) {
+        // No valid manual selection — the admin default decides. Wait for the
+        // workbench config before settling so the default isn't skipped.
+        if (workbenchLoading) return;
+        const rawDefault = (workbenchConfig as Record<string, unknown> | undefined)?.chat_default_model_id;
+        const adminDefaultId =
+          typeof rawDefault === 'string' || typeof rawDefault === 'number' ? String(rawDefault) : null;
+        if (adminDefaultId) {
+          target = models.find((m) => String(m.id) === adminDefaultId) ?? null;
+        }
+        if (!target && models.length) target = models[models.length - 1];
+      }
       if (target) {
         setChatModel({
           id: Number(target.id),
@@ -49,7 +64,7 @@ export default function useChatModelMemo(
       }
     } catch { /* ignore */ }
     hydratedRef.current = true;
-  }, [bsConfig, user?.id, setChatModel]);
+  }, [bsConfig, user?.id, setChatModel, workbenchConfig, workbenchLoading]);
 
   useEffect(() => {
     if (!hydratedRef.current || !user?.id || !chatModel.id) return;

src/frontend/client/src/locales/en/api_errors.gen.json

@@ -103,6 +103,7 @@
   "10802": "Failed to add provider. All models failed to initialize",
   "10803": "Failed to add provider. Some models failed to initialize",
   "10810": "Please configure the workbench embedding model.",
+  "10811": "The daily mode default model must be one of the configured workbench chat models. Please select again.",
   "10900": "Knowledge base name already exists",
   "10901": "Embedding model required",
   "10902": "Summary model invalid. Reconfigure in system model settings: {{exception}}",

src/frontend/client/src/locales/ja/api_errors.gen.json

@@ -103,6 +103,7 @@
   "10802": "提供元追加に失敗（全モデルの初期化失敗）",
   "10803": "提供元追加に失敗（一部モデルの初期化失敗）",
   "10810": "ワークベンチの embedding モデルを設定してください。",
+  "10811": "日常モードのデフォルトモデルは、設定済みのワークベンチチャットモデルから選択してください。",
   "10900": "ナレッジベース名が重複しています",
   "10901": "Embeddingモデルを選択してください",
   "10902": "要約モデルが無効です：{{exception}}",

src/frontend/client/src/locales/zh-Hans/api_errors.gen.json

@@ -103,6 +103,7 @@
   "10802": "添加服务提供方失败，模型全部初始化失败",
   "10803": "添加服务提供方失败，部分模型初始化失败",
   "10810": "请配置工作台向量模型。",
+  "10811": "日常模式默认模型必须是已配置的工作台对话模型，请重新选择。",
   "10900": "知识库名称重复",
   "10901": "知识库必须选择一个embedding模型",
   "10902": "文档知识库总结模型已失效，请前往模型管理-系统模型设置中进行配置。{{exception}}",

src/frontend/packages/locales/src/api_errors/en.json

@@ -103,6 +103,7 @@
   "10802": "Failed to add provider. All models failed to initialize",
   "10803": "Failed to add provider. Some models failed to initialize",
   "10810": "Please configure the workbench embedding model.",
+  "10811": "The daily mode default model must be one of the configured workbench chat models. Please select again.",
   "10900": "Knowledge base name already exists",
   "10901": "Embedding model required",
   "10902": "Summary model invalid. Reconfigure in system model settings: {{exception}}",

src/frontend/packages/locales/src/api_errors/ja.json

@@ -103,6 +103,7 @@
   "10802": "提供元追加に失敗（全モデルの初期化失敗）",
   "10803": "提供元追加に失敗（一部モデルの初期化失敗）",
   "10810": "ワークベンチの embedding モデルを設定してください。",
+  "10811": "日常モードのデフォルトモデルは、設定済みのワークベンチチャットモデルから選択してください。",
   "10900": "ナレッジベース名が重複しています",
   "10901": "Embeddingモデルを選択してください",
   "10902": "要約モデルが無効です：{{exception}}",

src/frontend/packages/locales/src/api_errors/zh-Hans.json

@@ -103,6 +103,7 @@
   "10802": "添加服务提供方失败，模型全部初始化失败",
   "10803": "添加服务提供方失败，部分模型初始化失败",
   "10810": "请配置工作台向量模型。",
+  "10811": "日常模式默认模型必须是已配置的工作台对话模型，请重新选择。",
   "10900": "知识库名称重复",
   "10901": "知识库必须选择一个embedding模型",
   "10902": "文档知识库总结模型已失效，请前往模型管理-系统模型设置中进行配置。{{exception}}",

src/frontend/platform/public/locales/en-US/api_errors.json

@@ -103,6 +103,7 @@
   "10802": "Failed to add provider. All models failed to initialize",
   "10803": "Failed to add provider. Some models failed to initialize",
   "10810": "Please configure the workbench embedding model.",
+  "10811": "The daily mode default model must be one of the configured workbench chat models. Please select again.",
   "10900": "Knowledge base name already exists",
   "10901": "Embedding model required",
   "10902": "Summary model invalid. Reconfigure in system model settings: {{exception}}",

src/frontend/platform/public/locales/en-US/model.json

@@ -10,6 +10,7 @@
     "workVectorModel": "Workbench Vector Model",
     "workVectorModelTooltip": "Used for $t(bs:linsight) task execution scenarios",
     "linsightDefaultModel": "$t(bs:linsight) Default Model",
+    "dailyDefaultModel": "Daily Mode Default Model",
     "linsightDefaultModelTooltip": "This model is the default executor for $t(bs:linsight) tasks; users can switch to another model when starting a task",
     "workbenchVoiceModel": "Workbench Voice Model",
     "sessionTitleGenerationModel": "Session Title Generation Model",

src/frontend/platform/public/locales/ja/api_errors.json

@@ -103,6 +103,7 @@
   "10802": "提供元追加に失敗（全モデルの初期化失敗）",
   "10803": "提供元追加に失敗（一部モデルの初期化失敗）",
   "10810": "ワークベンチの embedding モデルを設定してください。",
+  "10811": "日常モードのデフォルトモデルは、設定済みのワークベンチチャットモデルから選択してください。",
   "10900": "ナレッジベース名が重複しています",
   "10901": "Embeddingモデルを選択してください",
   "10902": "要約モデルが無効です：{{exception}}",

src/frontend/platform/public/locales/ja/model.json

@@ -8,6 +8,7 @@
     "confirmCancelEdit": "変更はまだ保存されていません。本当に終了しますか？",
     "promptSaved": "プロンプトが保存されました",
     "linsightDefaultModel": "$t(bs:linsight)デフォルトモデル",
+    "dailyDefaultModel": "日常モードのデフォルトモデル",
     "linsightDefaultModelTooltip": "このモデルは$t(bs:linsight)タスクのデフォルト実行モデルです。ユーザーはタスク開始時に切り替えできます",
     "workbenchVoiceModel": "ワークベンチ音声モデル",
     "sessionTitleGenerationModel": "セッションタイトル生成モデル",

src/frontend/platform/public/locales/zh-Hans/api_errors.json

@@ -103,6 +103,7 @@
   "10802": "添加服务提供方失败，模型全部初始化失败",
   "10803": "添加服务提供方失败，部分模型初始化失败",
   "10810": "请配置工作台向量模型。",
+  "10811": "日常模式默认模型必须是已配置的工作台对话模型，请重新选择。",
   "10900": "知识库名称重复",
   "10901": "知识库必须选择一个embedding模型",
   "10902": "文档知识库总结模型已失效，请前往模型管理-系统模型设置中进行配置。{{exception}}",

src/frontend/platform/public/locales/zh-Hans/model.json

@@ -8,6 +8,7 @@
     "confirmCancelEdit": "您的修改尚未保存，确定要退出吗？",
     "promptSaved": "提示词已保存",
     "linsightDefaultModel": "$t(bs:linsight)默认模型",
+    "dailyDefaultModel": "日常模式默认模型",
     "linsightDefaultModelTooltip": "该模型为$t(bs:linsight)任务的默认执行模型，用户发起任务时可切换",
     "workbenchVoiceModel": "工作台及知识空间语音模型",
     "sessionTitleGenerationModel": "应用会话标题生成模型",

src/frontend/platform/src/pages/BuildPage/bench/ModelManagement.tsx

@@ -36,12 +36,15 @@ interface ModelManagementProps {
     onNameChange: (index: number, name: string) => void;
     onDescriptionChange?: (index: number, description: string) => void;
     onVisualToggle?: (index: number, enabled: boolean) => void;
+    /** Daily-mode default model: used for new daily conversations when the user has no valid manual selection. */
+    chatDefaultModelId?: string | null;
+    onChatDefaultChange?: (id: string) => void;
     /** Linsight default model: the model id used as the default executor for Linsight tasks. */
     linsightDefaultModelId?: string | null;
     onLinsightDefaultChange?: (id: string) => void;
 }
 export const ModelManagement = forwardRef<HTMLDivElement[], ModelManagementProps>(
-    ({ models, errors, error, onAdd, onRemove, onModelChange, onNameChange, onDescriptionChange, onVisualToggle, linsightDefaultModelId, onLinsightDefaultChange }, ref) => {
+    ({ models, errors, error, onAdd, onRemove, onModelChange, onNameChange, onDescriptionChange, onVisualToggle, chatDefaultModelId, onChatDefaultChange, linsightDefaultModelId, onLinsightDefaultChange }, ref) => {
         // `assistant` mode hits /api/v1/llm/assistant/llm_list which is already
         // filtered to the admin-configured assistant allowlist (default model
         // and its server are placed first). Avoids the fetch-all + client-side
@@ -90,8 +93,9 @@ export const ModelManagement = forwardRef<HTMLDivElement[], ModelManagementProps
         // }, [models, llmOptions])
 
         return (
-            <div className="mt-2 border p-4 rounded-md bg-background">
-                <div className="grid mb-4 items-center" style={{ gridTemplateColumns: "1.2fr 0.85fr 1.3fr 72px 116px 36px" }}>
+            <div className="mt-2 border p-4 rounded-md bg-background overflow-x-auto">
+                <div className="min-w-[780px]">
+                <div className="grid mb-4 items-center" style={{ gridTemplateColumns: "1.2fr 0.85fr 1.3fr 72px 116px 116px 36px" }}>
                     <div className="">
                         <Label className="bisheng-label">{t('bench.model')}</Label>
                     </div>
@@ -105,6 +109,9 @@ export const ModelManagement = forwardRef<HTMLDivElement[], ModelManagementProps
                         <Label className="bisheng-label whitespace-nowrap mr-0.5">{t('bench.vision')}</Label>
                         <QuestionTooltip className="text-[#999999]" content={t('bench.visionText')} />
                     </div>
+                    <div className="flex items-center justify-center">
+                        <Label className="bisheng-label whitespace-nowrap">{t('model:model.dailyDefaultModel')}</Label>
+                    </div>
                     <div className="flex items-center justify-center">
                         <Label className="bisheng-label whitespace-nowrap mr-0.5">{t('model:model.linsightDefaultModel')}</Label>
                         <QuestionTooltip className="text-[#999999]" content={t('model:model.linsightDefaultModelTooltip')} />
@@ -118,7 +125,7 @@ export const ModelManagement = forwardRef<HTMLDivElement[], ModelManagementProps
                         key={model.key}
                         ref={(el) => setItemRef(el, index)}
                         className="grid items-center mb-4"
-                        style={{ gridTemplateColumns: "1.2fr 0.85fr 1.3fr 72px 116px 36px" }}
+                        style={{ gridTemplateColumns: "1.2fr 0.85fr 1.3fr 72px 116px 116px 36px" }}
                     >
                         <div className="pr-2" id={model.id}>
                             {assistantLlmOptions.length > 0 ? (
@@ -170,6 +177,18 @@ export const ModelManagement = forwardRef<HTMLDivElement[], ModelManagementProps
                             />
                         </div>
 
+                        {/* Daily-mode default model: single-select radio across the whole column */}
+                        <div className="flex items-center justify-center">
+                            <input
+                                type="radio"
+                                name="chat-default-model"
+                                className="size-4 cursor-pointer accent-primary disabled:cursor-not-allowed"
+                                checked={!!model.id && String(model.id) === String(chatDefaultModelId ?? '')}
+                                disabled={!model.id}
+                                onChange={() => model.id && onChatDefaultChange?.(model.id)}
+                            />
+                        </div>
+
                         {/* Linsight default model: single-select radio across the whole column */}
                         <div className="flex items-center justify-center">
                             <input
@@ -192,6 +211,7 @@ export const ModelManagement = forwardRef<HTMLDivElement[], ModelManagementProps
                     </div>
                 ))}
 
+                </div>
                 <Button
                     variant="outline"
                     className="border-none size-7 bg-gray-200 hover:bg-gray-300 transition-colors mt-2"

src/frontend/platform/src/pages/ModelPage/manage/tabs/WorkbenchModel.tsx

@@ -64,6 +64,7 @@ export default function WorkbenchModel({ onBack }) {
     const [form, setForm] = useState<any>({
         sourceModelId: null,
         linsightDefaultModelId: null,
+        chatDefaultModelId: null,
         asrModelId: null,
         ttsModelId: null,
         knowledgeSpaceLlmId: null,
@@ -90,7 +91,7 @@ export default function WorkbenchModel({ onBack }) {
     };
 
     const submitConfig = async () => {
-        const { linsightDefaultModelId, sourceModelId, asrModelId, ttsModelId, chatTitleLlmId, models } = form;
+        const { linsightDefaultModelId, chatDefaultModelId, sourceModelId, asrModelId, ttsModelId, chatTitleLlmId, models } = form;
         setSaveLoad(true);
         try {
             const data = {
@@ -100,6 +101,8 @@ export default function WorkbenchModel({ onBack }) {
                 embedding_model: { id: String(sourceModelId) },
                 // Linsight default executor model: one of the workbench chat models' id.
                 linsight_default_model_id: linsightDefaultModelId ? String(linsightDefaultModelId) : null,
+                // Daily-mode default model: independent sibling of the Linsight default.
+                chat_default_model_id: chatDefaultModelId ? String(chatDefaultModelId) : null,
                 asr_model: asrModelId ? { id: String(asrModelId) } : null, // 支持空值
                 tts_model: ttsModelId ? { id: String(ttsModelId) } : null, // 支持空值
                 // “应用会话标题生成模型”
@@ -115,6 +118,7 @@ export default function WorkbenchModel({ onBack }) {
             setForm({
                 sourceModelId: newConfig?.embedding_model?.id || null,
                 linsightDefaultModelId: newConfig?.linsight_default_model_id || null,
+                chatDefaultModelId: newConfig?.chat_default_model_id || null,
                 asrModelId: newConfig?.asr_model?.id || null,
                 ttsModelId: newConfig?.tts_model?.id || null,
                 chatTitleLlmId: newConfig?.chat_title_llm?.id || null,
@@ -125,6 +129,7 @@ export default function WorkbenchModel({ onBack }) {
             lastSaveFormDataRef.current = {
                 embedding_model: { id: newConfig?.embedding_model?.id },
                 linsight_default_model_id: newConfig?.linsight_default_model_id || null,
+                chat_default_model_id: newConfig?.chat_default_model_id || null,
                 abstract_prompt: newConfig?.abstract_prompt || defalutPrompt,
                 asr_model: { id: newConfig?.asr_model?.id },
                 tts_model: { id: newConfig?.tts_model?.id },
@@ -197,6 +202,7 @@ export default function WorkbenchModel({ onBack }) {
             setForm({
                 sourceModelId: linsightConfig.embedding_model?.id || null,
                 linsightDefaultModelId: linsightConfig.linsight_default_model_id || null,
+                chatDefaultModelId: linsightConfig.chat_default_model_id || null,
                 asrModelId: linsightConfig.asr_model?.id || null,
                 ttsModelId: linsightConfig.tts_model?.id || null,
                 chatTitleLlmId: linsightConfig.chat_title_llm?.id || null,
@@ -207,6 +213,7 @@ export default function WorkbenchModel({ onBack }) {
             lastSaveFormDataRef.current = {
                 embedding_model: { id: linsightConfig.embedding_model?.id },
                 linsight_default_model_id: linsightConfig.linsight_default_model_id || null,
+                chat_default_model_id: linsightConfig.chat_default_model_id || null,
                 abstract_prompt: linsightConfig.abstract_prompt || defalutPrompt,
                 asr_model: { id: linsightConfig.asr_model?.id },
                 tts_model: { id: linsightConfig.tts_model?.id },
@@ -227,7 +234,7 @@ export default function WorkbenchModel({ onBack }) {
     const inheritedFromRoot = !!linsightConfig?.inherited_from_root;
     const fallbackBlocked = !!linsightConfig?.fallback_blocked;
     return (
-        <div className="max-w-[720px] mx-auto gap-y-4 flex flex-col mt-16 relative">
+        <div className="max-w-[880px] mx-auto gap-y-4 flex flex-col mt-16 relative">
             <FallbackBlockedBanner visible={fallbackBlocked} />
             {inheritedFromRoot && (
                 <div className="-mb-2 text-xs text-muted-foreground flex items-center">
@@ -243,6 +250,8 @@ export default function WorkbenchModel({ onBack }) {
                     error={''}
                     linsightDefaultModelId={form.linsightDefaultModelId}
                     onLinsightDefaultChange={(id) => setForm((prev) => ({ ...prev, linsightDefaultModelId: id }))}
+                    chatDefaultModelId={form.chatDefaultModelId}
+                    onChatDefaultChange={(id) => setForm((prev) => ({ ...prev, chatDefaultModelId: id }))}
                     onAdd={() => setForm((prev) => ({
                         ...prev,
                         models: [...prev.models, { key: generateUUID(4), id: '', name: '', displayName: '', description: '', visual: false }],
@@ -253,10 +262,15 @@ export default function WorkbenchModel({ onBack }) {
                         const linsightDefaultModelId = removed?.id && removed.id === prev.linsightDefaultModelId
                             ? null
                             : prev.linsightDefaultModelId;
+                        // Same for the daily-mode default.
+                        const chatDefaultModelId = removed?.id && String(removed.id) === String(prev.chatDefaultModelId ?? '')
+                            ? null
+                            : prev.chatDefaultModelId;
                         return {
                             ...prev,
                             models: prev.models.filter((_, i) => i !== index),
                             linsightDefaultModelId,
+                            chatDefaultModelId,
                         };
                     })}
                     onModelChange={(index, id) => setForm((prev) => ({
@@ -340,6 +354,7 @@ export function useLinsightConfig() {
                 embedding_model: null,
                 abstract_prompt: defalutPrompt,
                 linsight_default_model_id: null,
+                chat_default_model_id: null,
                 asr_model: null,
                 tts_model: null,
                 knowledge_space_llm: null,