Fix deploy workflow and create staging/main branches

- develop: auto-deploy to dev.shellmate.sh
- staging: auto-deploy to staging.shellmate.sh
- main: auto-deploy to production shellmate.sh

Proper CI/CD flow:
1. Feature branch → PR to develop → CI tests → merge → deploy dev
2. develop → PR to staging → deploy staging
3. staging → PR to main → deploy production

.github/workflows/deploy.yml

@@ -2,66 +2,62 @@ name: Deploy
 
 on:
   push:
-    branches: [main, develop, staging]
-  workflow_dispatch:
-    inputs:
-      environment:
-        description: 'Environment to deploy to'
-        required: true
-        default: 'dev'
-        type: choice
-        options:
-          - dev
-          - staging
-          - production
+    branches: [main, staging, develop]
+
+env:
+  SERVER_IP: "46.225.26.166"
+  SSH_PORT: "2222"
 
 jobs:
   deploy:
     runs-on: ubuntu-latest
-    needs: []
-    environment:
-      name: ${{ github.ref == 'refs/heads/main' && 'production' || github.ref == 'refs/heads/staging' && 'staging' || 'dev' }}
-      url: ${{ github.ref == 'refs/heads/main' && 'https://shellmate.sh' || github.ref == 'refs/heads/staging' && 'https://staging.shellmate.sh' || 'https://dev.shellmate.sh' }}
+    if: github.event_name == 'push'
     
     steps:
       - uses: actions/checkout@v4
       
-      - name: Set environment variables
+      - name: Determine environment
         id: env
         run: |
           if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
-            echo "env_name=production" >> $GITHUB_OUTPUT
-            echo "ssh_host=shellmate.sh" >> $GITHUB_OUTPUT
-            echo "ssh_port=22" >> $GITHUB_OUTPUT
+            echo "name=production" >> $GITHUB_OUTPUT
+            echo "url=https://shellmate.sh" >> $GITHUB_OUTPUT
+            echo "ssh_user=play" >> $GITHUB_OUTPUT
           elif [[ "${{ github.ref }}" == "refs/heads/staging" ]]; then
-            echo "env_name=staging" >> $GITHUB_OUTPUT
-            echo "ssh_host=shellmate.sh" >> $GITHUB_OUTPUT
-            echo "ssh_port=2223" >> $GITHUB_OUTPUT
+            echo "name=staging" >> $GITHUB_OUTPUT
+            echo "url=https://staging.shellmate.sh" >> $GITHUB_OUTPUT
+            echo "ssh_user=play" >> $GITHUB_OUTPUT
           else
-            echo "env_name=dev" >> $GITHUB_OUTPUT
-            echo "ssh_host=shellmate.sh" >> $GITHUB_OUTPUT
-            echo "ssh_port=2222" >> $GITHUB_OUTPUT
+            echo "name=dev" >> $GITHUB_OUTPUT
+            echo "url=https://dev.shellmate.sh" >> $GITHUB_OUTPUT
+            echo "ssh_user=play" >> $GITHUB_OUTPUT
           fi
       
-      - name: Deploy to ${{ steps.env.outputs.env_name }}
-        uses: appleboy/ssh-action@v1.0.3
-        with:
-          host: ${{ steps.env.outputs.ssh_host }}
-          username: root
-          key: ${{ secrets.DEPLOY_SSH_KEY }}
-          port: ${{ steps.env.outputs.ssh_port }}
-          script: |
+      - name: Setup SSH
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.DEPLOY_SSH_KEY }}" > ~/.ssh/deploy_key
+          chmod 600 ~/.ssh/deploy_key
+          ssh-keyscan -p ${{ env.SSH_PORT }} ${{ env.SERVER_IP }} >> ~/.ssh/known_hosts 2>/dev/null || true
+      
+      - name: Deploy to ${{ steps.env.outputs.name }}
+        run: |
+          ssh -i ~/.ssh/deploy_key -p ${{ env.SSH_PORT }} -o StrictHostKeyChecking=no root@${{ env.SERVER_IP }} << 'ENDSSH'
             cd /opt/shellmate
             git fetch origin
             git checkout ${{ github.ref_name }}
             git pull origin ${{ github.ref_name }}
             docker compose up -d --build
-            echo "Deployed ${{ github.ref_name }} to ${{ steps.env.outputs.env_name }}"
+            echo "✅ Deployed ${{ github.ref_name }} to ${{ steps.env.outputs.name }}"
+          ENDSSH
       
-      - name: Deployment summary
+      - name: Summary
         run: |
-          echo "## Deployment Complete 🚀" >> $GITHUB_STEP_SUMMARY
+          echo "## 🚀 Deployment Complete" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
-          echo "- **Environment:** ${{ steps.env.outputs.env_name }}" >> $GITHUB_STEP_SUMMARY
-          echo "- **Branch:** ${{ github.ref_name }}" >> $GITHUB_STEP_SUMMARY
-          echo "- **Commit:** ${{ github.sha }}" >> $GITHUB_STEP_SUMMARY
+          echo "| | |" >> $GITHUB_STEP_SUMMARY
+          echo "|---|---|" >> $GITHUB_STEP_SUMMARY
+          echo "| **Environment** | ${{ steps.env.outputs.name }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| **Branch** | ${{ github.ref_name }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| **URL** | ${{ steps.env.outputs.url }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| **Commit** | \`${{ github.sha }}\` |" >> $GITHUB_STEP_SUMMARY