Add turn configuration support for assistants

- Introduce a new `turnConfig` field in `AssistantConfig` and `Assistant` models to manage user interaction settings.
- Implement `TurnConfig`, `BargeInConfig`, `VadConfig`, and `TurnDetectionConfig` schemas to define turn management strategies.
- Update the backend to handle turn configuration in the database and during assistant operations.
- Enhance frontend components with a `TurnConfigEditor` for configuring turn settings, including VAD and barge-in strategies.
- Modify existing pages to integrate turn configuration, improving user experience and interaction capabilities.

frontend/src/components/workflow/WorkflowEditor.tsx

@@ -47,6 +47,8 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 import { Switch } from "@/components/ui/switch";
+import type { TurnConfig } from "@/lib/api";
+import { TurnConfigEditor } from "@/components/turn-config-editor";
 import { Textarea } from "@/components/ui/textarea";
 
 import { edgeTypes } from "./ConditionEdge";
@@ -73,6 +75,7 @@ export type WorkflowSettings = {
   asr?: string;
   tts?: string;
   allowInterrupt: boolean;
+  turnConfig: TurnConfig;
 };
 
 export type ModelOption = { value: string; label: string };
@@ -528,22 +531,16 @@ function Canvas({
                     options={modelOptions.tts}
                     onChange={(v) => onSettingsChange({ ...settings, tts: v })}
                   />
-                  <label className="flex items-center justify-between gap-4 rounded-2xl border border-hairline bg-card p-4 shadow-sm">
-                    <span>
-                      <span className="block text-sm font-medium text-foreground">
-                        允许用户打断
-                      </span>
-                      <span className="mt-1 block text-xs leading-5 text-muted-foreground">
-                        用户说话时可中断当前语音回复。
-                      </span>
-                    </span>
-                    <Switch
-                      checked={settings.allowInterrupt}
-                      onCheckedChange={(checked) =>
-                        onSettingsChange({ ...settings, allowInterrupt: checked })
-                      }
-                    />
-                  </label>
+                  <TurnConfigEditor
+                    enabled={settings.allowInterrupt}
+                    config={settings.turnConfig}
+                    onEnabledChange={(allowInterrupt) =>
+                      onSettingsChange({ ...settings, allowInterrupt })
+                    }
+                    onConfigChange={(turnConfig) =>
+                      onSettingsChange({ ...settings, turnConfig })
+                    }
+                  />
                 </div>
                 <DialogFooter className="border-t border-hairline bg-card px-5 py-4">
                   <Button onClick={() => setSettingsOpen(false)}>完成</Button>