feat: Enhance AI Agent and Channel Management

- Updated labels in the AI Agents dashboard for clarity, changing "流程状态" to "Playbook 状态" and "未发布流程" to "未发布 Playbook".
- Introduced AI Agent rollout percentage management in channel editing, allowing users to set and rollback rollout percentages.
- Added new API endpoints for rolling back AI Agent rollout and fetching agent run metrics.
- Implemented new UI components for displaying agent run details, including status, duration, and input/output tokens.
- Enhanced type definitions for AdminChannel and AIAgent to include rollout percentages and runtime modes.
- Updated navigation to include a section for agent runs.
- Added new translations for agent run features in both English and Chinese.

web/app/dashboard/ai-agents/page.tsx

@@ -122,7 +122,7 @@ export default function DashboardAIAgentsPage() {
       },
       {
         key: "workflow",
-        label: "流程状态",
+        label: "Playbook 状态",
         render: (item) => {
           const published = isWorkflowPublished(item);
           return (
@@ -139,7 +139,7 @@ export default function DashboardAIAgentsPage() {
               </div>
               {!published ? (
                 <div className="text-xs text-muted-foreground">
-                  未发布流程，AI 不会自动回复
+                  未发布 Playbook，AI 不会自动回复
                 </div>
               ) : (
                 <div className="text-xs text-muted-foreground">