feat(statusline): expose background agents in status line payload (#1234)

src/cli/App.tsx

@@ -265,6 +265,7 @@ import {
 import {
   clearCompletedSubagents,
   clearSubagentsByIds,
+  getActiveBackgroundAgents,
   getSubagentByToolCallId,
   getSnapshot as getSubagentSnapshot,
   hasActiveSubagents,
@@ -2492,6 +2493,11 @@ export default function App({
     permissionMode: uiPermissionMode,
     networkPhase,
     terminalWidth: chromeColumns,
+    backgroundAgents: getActiveBackgroundAgents().map((a) => ({
+      type: a.type,
+      status: a.status,
+      duration_ms: Date.now() - a.startTime,
+    })),
     triggerVersion: statusLineTriggerVersion,
   });
 

src/cli/helpers/statusLinePayload.ts

@@ -19,6 +19,11 @@ export interface StatusLinePayloadBuildInput {
   permissionMode?: string;
   networkPhase?: "upload" | "download" | "error" | null;
   terminalWidth?: number;
+  backgroundAgents?: Array<{
+    type: string;
+    status: string;
+    duration_ms: number;
+  }>;
 }
 
 /**
@@ -76,6 +81,11 @@ export interface StatusLinePayload {
   permission_mode: string | null;
   network_phase: "upload" | "download" | "error" | null;
   terminal_width: number | null;
+  background_agents: Array<{
+    type: string;
+    status: string;
+    duration_ms: number;
+  }>;
 }
 
 export function calculateContextPercentages(
@@ -162,5 +172,10 @@ export function buildStatusLinePayload(
     permission_mode: input.permissionMode ?? null,
     network_phase: input.networkPhase ?? null,
     terminal_width: input.terminalWidth ?? null,
+    background_agents: (input.backgroundAgents ?? []).map((a) => ({
+      type: a.type,
+      status: a.status,
+      duration_ms: a.duration_ms,
+    })),
   };
 }

src/cli/helpers/statusLineSchema.ts

@@ -21,6 +21,7 @@ export const STATUSLINE_NATIVE_FIELDS: StatusLineFieldSpec[] = [
   { path: "permission_mode" },
   { path: "network_phase" },
   { path: "terminal_width" },
+  { path: "background_agents" },
 ];
 
 export const STATUSLINE_DERIVED_FIELDS: StatusLineFieldSpec[] = [

src/cli/hooks/useConfigurableStatusLine.ts

@@ -37,6 +37,11 @@ export interface StatusLineInputs {
   permissionMode?: string;
   networkPhase?: "upload" | "download" | "error" | null;
   terminalWidth?: number;
+  backgroundAgents?: Array<{
+    type: string;
+    status: string;
+    duration_ms: number;
+  }>;
   triggerVersion: number;
 }
 
@@ -73,6 +78,7 @@ function toPayloadInput(inputs: StatusLineInputs): StatusLinePayloadBuildInput {
     permissionMode: inputs.permissionMode,
     networkPhase: inputs.networkPhase,
     terminalWidth: inputs.terminalWidth,
+    backgroundAgents: inputs.backgroundAgents,
   };
 }