🤖 Add custom formatting for status_set tool calls

Created StatusSetToolCall component following existing tool call patterns:
- Shows emoji and message in collapsed header
- Displays full result details when expanded
- Uses same ToolContainer/ToolHeader primitives as other tools
- Added type definitions (StatusSetToolArgs, StatusSetToolResult)
- Registered in ToolMessage.tsx routing

Visual format:
- Header: [▶] [emoji] message [status]
- Expanded: Shows success/error details

Generated with `cmux`

Author: ammar-agent

src/components/Messages/ToolMessage.tsx

@@ -7,6 +7,7 @@ import { FileEditToolCall } from "../tools/FileEditToolCall";
 import { FileReadToolCall } from "../tools/FileReadToolCall";
 import { ProposePlanToolCall } from "../tools/ProposePlanToolCall";
 import { TodoToolCall } from "../tools/TodoToolCall";
+import { StatusSetToolCall } from "../tools/StatusSetToolCall";
 import type {
   BashToolArgs,
   BashToolResult,
@@ -22,6 +23,8 @@ import type {
   ProposePlanToolResult,
   TodoWriteToolArgs,
   TodoWriteToolResult,
+  StatusSetToolArgs,
+  StatusSetToolResult,
 } from "@/types/tools";
 
 interface ToolMessageProps {
@@ -73,6 +76,11 @@ function isTodoWriteTool(toolName: string, args: unknown): args is TodoWriteTool
   return TOOL_DEFINITIONS.todo_write.schema.safeParse(args).success;
 }
 
+function isStatusSetTool(toolName: string, args: unknown): args is StatusSetToolArgs {
+  if (toolName !== "status_set") return false;
+  return TOOL_DEFINITIONS.status_set.schema.safeParse(args).success;
+}
+
 export const ToolMessage: React.FC<ToolMessageProps> = ({ message, className, workspaceId }) => {
   // Route to specialized components based on tool name
   if (isBashTool(message.toolName, message.args)) {
@@ -164,6 +172,18 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({ message, className, wo
     );
   }
 
+  if (isStatusSetTool(message.toolName, message.args)) {
+    return (
+      <div className={className}>
+        <StatusSetToolCall
+          args={message.args}
+          result={message.result as StatusSetToolResult | undefined}
+          status={message.status}
+        />
+      </div>
+    );
+  }
+
   // Fallback to generic tool call
   return (
     <div className={className}>

src/components/tools/StatusSetToolCall.tsx

@@ -0,0 +1,52 @@
+import React from "react";
+import type { StatusSetToolArgs, StatusSetToolResult } from "@/types/tools";
+import {
+  ToolContainer,
+  ToolHeader,
+  ExpandIcon,
+  StatusIndicator,
+  ToolDetails,
+} from "./shared/ToolPrimitives";
+import { useToolExpansion, getStatusDisplay, type ToolStatus } from "./shared/toolUtils";
+import { TooltipWrapper, Tooltip } from "../Tooltip";
+
+interface StatusSetToolCallProps {
+  args: StatusSetToolArgs;
+  result?: StatusSetToolResult;
+  status?: ToolStatus;
+}
+
+export const StatusSetToolCall: React.FC<StatusSetToolCallProps> = ({
+  args,
+  result,
+  status = "pending",
+}) => {
+  const { expanded, toggleExpanded } = useToolExpansion(false); // Collapsed by default
+  const statusDisplay = getStatusDisplay(status);
+
+  return (
+    <ToolContainer expanded={expanded}>
+      <ToolHeader onClick={toggleExpanded}>
+        <ExpandIcon expanded={expanded}>▶</ExpandIcon>
+        <TooltipWrapper inline>
+          <span>{args.emoji}</span>
+          <Tooltip>status_set</Tooltip>
+        </TooltipWrapper>
+        <span className="text-sm text-muted-foreground">{args.message}</span>
+        <StatusIndicator status={status}>{statusDisplay}</StatusIndicator>
+      </ToolHeader>
+
+      {expanded && result && (
+        <ToolDetails>
+          {result.success ? (
+            <div className="text-sm text-muted-foreground">
+              Status updated: {result.emoji} {result.message}
+            </div>
+          ) : (
+            <div className="text-sm text-red-400">Error: {result.error}</div>
+          )}
+        </ToolDetails>
+      )}
+    </ToolContainer>
+  );
+};

src/types/tools.ts

@@ -157,3 +157,21 @@ export interface TodoWriteToolResult {
   success: true;
   count: number;
 }
+
+// Status Set Tool Types
+export interface StatusSetToolArgs {
+  emoji: string;
+  message: string;
+}
+
+export type StatusSetToolResult =
+  | {
+      success: true;
+      emoji: string;
+      message: string;
+    }
+  | {
+      success: false;
+      error: string;
+    };
+