feat: add free deployment configs for Railway, Render, Fly.io

- railway.toml for Railway.app deployment
- fly.toml for Fly.io deployment
- render.yaml for Render.com deployment
- deploy.sh quick deployment helper script
- DEPLOY.md with detailed instructions

All configs optimized for free tier usage.

DEPLOY.md

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+# 🚀 Deploy PicoClaw for Free
+
+## Quick Deploy
+
+### Railway.app (Recommended)
+
+[![Deploy on Railway](https://railway.app/button.svg)](https://railway.app/template)
+
+1. Click "Deploy on Railway"
+2. Set environment variables:
+   - `TELEGRAM_BOT_TOKEN` - Your bot token from @BotFather
+   - `ZHIPU_API_KEY` - Your GLM API key from Z.AI
+
+### Render.com
+
+[![Deploy to Render](https://render.com/images/deploy-to-render-button.svg)](https://render.com/deploy)
+
+1. Click "Deploy to Render"
+2. Connect GitHub repo
+3. Set environment variables
+4. Deploy
+
+### Fly.io
+
+```bash
+# Install CLI
+brew install flyctl
+
+# Login
+fly auth login
+
+# Deploy
+fly launch
+fly deploy
+```
+
+## Environment Variables
+
+| Variable | Required | Description |
+|----------|----------|-------------|
+| `TELEGRAM_BOT_TOKEN` | ✅ | Bot token from @BotFather |
+| `ZHIPU_API_KEY` | ✅ | GLM API key from Z.AI |
+| `WEB_SEARCH_ENABLED` | ❌ | Enable web search (default: true) |
+| `WEB_SEARCH_PROVIDER` | ❌ | duckduckgo or brave |
+
+## Files Created
+
+- `railway.toml` - Railway config
+- `fly.toml` - Fly.io config  
+- `render.yaml` - Render blueprint
+- `deploy.sh` - Quick deploy script
+
+## Run Deploy Script
+
+```bash
+cd /Users/adisusilayasa/picoclaw
+./deploy.sh
+```

deploy.sh

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+#!/bin/bash
+
+echo "🦞 PicoClaw Deployment Helper"
+echo "=============================="
+echo ""
+echo "Choose deployment platform:"
+echo ""
+echo "1) Railway.app (Recommended - $5/month free credit)"
+echo "2) Render.com (Free - 750 hours/month)"
+echo "3) Fly.io (Free - 3 VMs)"
+echo "4) Show instructions only"
+echo ""
+read -p "Enter choice [1-4]: " choice
+
+case $choice in
+    1)
+        echo ""
+        echo "📦 Deploying to Railway..."
+        echo ""
+        
+        # Check if Railway CLI is installed
+        if ! command -v railway &> /dev/null; then
+            echo "Installing Railway CLI..."
+            npm install -g @railway/cli
+        fi
+        
+        # Login if needed
+        railway login
+        
+        # Initialize project
+        echo ""
+        echo "Run these commands:"
+        echo "  railway init"
+        echo "  railway variables set TELEGRAM_BOT_TOKEN=YOUR_TOKEN"
+        echo "  railway variables set ZHIPU_API_KEY=YOUR_KEY"
+        echo "  railway up"
+        ;;
+    2)
+        echo ""
+        echo "📦 Deploying to Render..."
+        echo ""
+        echo "Steps:"
+        echo "1. Go to https://render.com"
+        echo "2. Create account"
+        echo "3. New → Web Service"
+        echo "4. Connect GitHub repo"
+        echo "5. Select Docker environment"
+        echo "6. Add environment variables"
+        echo "7. Deploy"
+        ;;
+    3)
+        echo ""
+        echo "📦 Deploying to Fly.io..."
+        echo ""
+        
+        # Check if Fly CLI is installed
+        if ! command -v fly &> /dev/null; then
+            echo "Installing Fly CLI..."
+            brew install flyctl
+        fi
+        
+        echo "Run these commands:"
+        echo "  fly auth login"
+        echo "  fly secrets set TELEGRAM_BOT_TOKEN=YOUR_TOKEN"
+        echo "  fly secrets set ZHIPU_API_KEY=YOUR_KEY"
+        echo "  fly launch"
+        echo "  fly deploy"
+        ;;
+    4)
+        echo ""
+        echo "📖 See ~/.picoclaw/workspace/DEPLOYMENT.md for detailed instructions"
+        ;;
+    *)
+        echo "Invalid choice"
+        ;;
+esac

fly.toml

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+app = "picoclaw-claw"
+primary_region = "sin"
+
+[build]
+  dockerfile = "Dockerfile"
+
+[env]
+  PORT = "8080"
+
+[[services]]
+  internal_port = 8080
+  protocol = "tcp"
+  auto_stop_machines = false
+  auto_start_machines = false
+  min_machines_running = 1
+
+  [[services.ports]]
+    handlers = ["http"]
+    port = 80
+
+  [[services.ports]]
+    handlers = ["tls", "http"]
+    port = 443
+
+[[vm]]
+  cpu_kind = "shared"
+  cpus = 1
+  memory_mb = 256

railway.toml

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+[build]
+builder = "DOCKERFILE"
+dockerfilePath = "Dockerfile"
+
+[deploy]
+startCommand = "./build/picoclaw gateway"
+restartPolicyType = "ON_FAILURE"
+restartPolicyMaxRetries = 10

render.yaml

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+services:
+  - type: web
+    name: picoclaw
+    runtime: docker
+    dockerContext: .
+    dockerfilePath: ./Dockerfile
+    plan: free
+    envVars:
+      - key: TELEGRAM_BOT_TOKEN
+        sync: false
+      - key: ZHIPU_API_KEY
+        sync: false
+      - key: WEB_SEARCH_ENABLED
+        value: true
+      - key: WEB_SEARCH_PROVIDER
+        value: duckduckgo
+    disk:
+      name: picoclaw-data
+      mountPath: /root/.picoclaw
+      sizeGB: 1