feat: add Claude Code ACP as agent option

- Add claude-code-acp to DEFAULT_AGENTS (first in list)
- Add install hint for @anthropic-ai/claude-code
- Add icon and description in Settings UI

Reference: https://github.com/zed-industries/claude-code-acp

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/main/config/defaults.ts

@@ -4,6 +4,15 @@
 import type { AgentConfig, AppConfig } from '../../shared/types'
 
 export const DEFAULT_AGENTS: Record<string, AgentConfig> = {
+  'claude-code': {
+    id: 'claude-code',
+    name: 'Claude Code',
+    command: 'claude-code-acp',
+    args: [],
+    enabled: true,
+    // Note: Uses https://github.com/zed-industries/claude-code-acp
+    // Requires ANTHROPIC_API_KEY environment variable
+  },
   opencode: {
     id: 'opencode',
     name: 'OpenCode',

src/main/utils/agent-check.ts

@@ -17,9 +17,10 @@ export interface AgentCheckResult {
 
 // Install hints for each agent
 const INSTALL_HINTS: Record<string, string> = {
+  'claude-code': 'npm install -g @anthropic-ai/claude-code',
   opencode: 'go install github.com/anomalyco/opencode@latest',
   codex: 'npm install -g @openai/codex',
-  gemini: 'npm install -g @anthropic-ai/gemini-cli',
+  gemini: 'npm install -g @google/gemini-cli',
 }
 
 /**

src/renderer/src/components/Settings.tsx

@@ -15,10 +15,10 @@ interface SettingsProps {
 
 // Agent icons mapping
 const AGENT_ICONS: Record<string, string> = {
+  'claude-code': '◉',
   opencode: '⌘',
   codex: '◈',
   gemini: '✦',
-  claude: '◉',
 }
 
 type ThemeMode = 'light' | 'dark' | 'system'
@@ -281,10 +281,10 @@ function AgentCard({ agent, isSelected, onSelect }: AgentCardProps) {
 
 function getAgentDescription(agentId: string): string {
   const descriptions: Record<string, string> = {
+    'claude-code': 'Anthropic\'s Claude Code via ACP',
     opencode: 'Terminal-based coding assistant',
-    codex: 'OpenAI\'s coding agent CLI',
+    codex: 'OpenAI\'s Codex CLI via ACP',
     gemini: 'Google\'s Gemini CLI agent',
-    claude: 'Anthropic\'s Claude CLI',
   }
   return descriptions[agentId] || 'Coding assistant'
 }