Add Muse Code agent support for agentic search

- add support for muse code https://dev.meta.ai/docs/muse-code/extending#headless

├── README.md
└── apps
    └── editor
        └── src
            └── features
                └── search-files
                    └── search-modes
                        └── perform-agent-search-mode
                            ├── agents
                            │   ├── antigravity.ts
                            │   ├── claude.ts
                            │   ├── codex.ts
                            │   ├── cursor.ts
                            │   ├── grok.ts
                            │   └── opencode.ts
                            ├── index.ts
                            ├── types.ts
                            └── utils.ts

Author: robertpiosik

README.md

@@ -45,6 +45,7 @@
 - Grok Build
 - Antigravity
 - OpenCode
+- Muse Code
 
 ### File editing
 

apps/editor/src/features/search-files/search-modes/perform-agent-search-mode/agents/muse.ts

@@ -0,0 +1,84 @@
+import { agentic_file_search_instructions } from '@/constants/instructions'
+import { CodingAgent } from '../types'
+import { check_command_exists } from '../utils'
+
+let accumulated_output = ''
+
+export const muse_agent: CodingAgent = {
+  id: 'muse',
+  label: 'Muse Code',
+  cmd: 'muse',
+  is_installed: () => check_command_exists('muse'),
+  get_documentation_url: () => 'https://dev.meta.ai/docs/muse-code/extending#headless',
+  get_args: (query: string) => {
+    accumulated_output = ''
+    return [
+      'exec',
+      '--json',
+      '--yolo',
+      `${agentic_file_search_instructions}\n\n${query}`
+    ]
+  },
+  parse_stream_line: (parsed, report_progress) => {
+    const payload = parsed.payload || parsed
+
+    if (
+      parsed.type === 'tool.result' ||
+      parsed.type === 'tool_call' ||
+      payload.type === 'tool_call'
+    ) {
+      const tool = payload.tool_name || payload.tool || payload.name
+      if (tool) report_progress(typeof tool === 'string' ? tool : JSON.stringify(tool))
+    } else if (
+      parsed.type === 'status' ||
+      payload.type === 'status' ||
+      parsed.type === 'run.model.configured'
+    ) {
+      const msg = payload.message || payload.status || parsed.type
+      if (msg) report_progress(msg)
+    } else if (payload.tool) {
+      report_progress(payload.tool.name || payload.tool)
+    }
+
+    if (parsed.type === 'streamed' || payload.type === 'streamed') {
+      if (payload.text) {
+        accumulated_output += payload.text
+        return { output: accumulated_output }
+      }
+    } else if (parsed.type === 'result' || payload.type === 'result') {
+      const res = payload.result || payload
+      if (res) {
+        return {
+          output: typeof res === 'string' ? res : res.text || res.response || ''
+        }
+      }
+    }
+
+    if (payload.text && typeof payload.text === 'string') {
+      return { output: payload.text }
+    } else if (payload.output) {
+      return {
+        output:
+          typeof payload.output === 'string'
+            ? payload.output
+            : payload.output.text || ''
+      }
+    }
+  },
+  parse_final_output: (parsed, current_output) => {
+    const payload = parsed.payload || parsed
+    if (parsed.type === 'result' || payload.type === 'result') {
+      const res = payload.result || payload
+      if (res) {
+        return typeof res === 'string' ? res : res.text || res.response || ''
+      }
+    } else if (payload.text) {
+      return payload.text
+    } else if (payload.output) {
+      return typeof payload.output === 'string'
+        ? payload.output
+        : payload.output.text || ''
+    }
+    return current_output || accumulated_output
+  }
+}

apps/editor/src/features/search-files/search-modes/perform-agent-search-mode/index.ts

@@ -20,6 +20,7 @@ import { codex_agent } from './agents/codex'
 import { cursor_agent } from './agents/cursor'
 import { opencode_agent } from './agents/opencode'
 import { grok_agent } from './agents/grok'
+import { muse_agent } from './agents/muse'
 import { CodingAgent } from './types'
 import { format_duration } from './utils'
 
@@ -29,6 +30,7 @@ const AGENTS: CodingAgent[] = [
   claude_agent,
   cursor_agent,
   grok_agent,
+  muse_agent,
   opencode_agent
 ]