feat(cli): add appclaw doctor environment preflight

README.md

@@ -38,10 +38,11 @@ AppClaw:
 
 ```bash
 npm install -g @appclaw/cli
+appclaw doctor   # preflight: Node, .env, LLM key, appium-mcp, devices
 appclaw "open the settings app and turn on airplane mode"
 ```
 
-You'll need **Node.js 22+**, a connected device / emulator / simulator, and an **LLM API key** (Anthropic, OpenAI, Google, Groq, or local Ollama). Full setup → **[appclaw.in](https://appclaw.in)**.
+You'll need **Node.js 22+**, a connected device / emulator / simulator, and an **LLM API key** (Anthropic, OpenAI, Google, Groq, or local Ollama). `appclaw doctor` checks all of this in seconds and prints fix hints for anything missing (`--full` also spawns appium-mcp for a real handshake). Full setup → **[appclaw.in](https://appclaw.in)**.
 
 ## What it can do
 

packages/cli/bin/appclaw.js

@@ -1,11 +1,16 @@
 #!/usr/bin/env node
 
-// `appclaw init` scaffolds a project; `appclaw test ...` routes to the runner
-// CLI; everything else falls through to the main interactive/flow/report entry.
+// `appclaw init` scaffolds a project; `appclaw doctor` runs the environment
+// preflight; `appclaw test ...` routes to the runner CLI; everything else
+// falls through to the main interactive/flow/report entry.
 if (process.argv[2] === 'init') {
   const { runInit } = await import('../dist/cli/init.js');
   const code = await runInit(process.argv.slice(3));
   process.exit(code);
+} else if (process.argv[2] === 'doctor') {
+  const { runDoctor } = await import('../dist/cli/doctor.js');
+  const code = await runDoctor(process.argv.slice(3));
+  process.exit(code);
 } else if (process.argv[2] === 'test') {
   // Spec/config files (appclaw.config.ts, *.spec.ts) are TypeScript, loaded via
   // dynamic import() inside the runner. Node can't import .ts directly, so we