Improve deployment process and add login redirect logic

Deployment improvements:
- Add template env files (.envs.example/) for documentation
- Create init-production.sh for one-time server setup
- Create build-activepieces.sh for building/deploying AP image
- Update deploy.sh with --deploy-ap flag
- Make custom-pieces-metadata.sql idempotent
- Update DEPLOYMENT.md with comprehensive instructions

Frontend:
- Redirect logged-in business owners from root domain to tenant dashboard
- Redirect logged-in users from /login to /dashboard on their tenant
- Log out customers on wrong subdomain instead of redirecting

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

activepieces-fork/docker-entrypoint.sh

@@ -12,6 +12,10 @@ echo "AP_FAVICON_URL: $AP_FAVICON_URL"
 envsubst '${AP_APP_TITLE} ${AP_FAVICON_URL}' < /usr/share/nginx/html/index.html > /usr/share/nginx/html/index.html.tmp && \
 mv /usr/share/nginx/html/index.html.tmp /usr/share/nginx/html/index.html
 
+# Register custom pieces (publish to Verdaccio and insert metadata)
+if [ -f /usr/src/app/publish-pieces.sh ]; then
+    /usr/src/app/publish-pieces.sh || echo "Warning: Custom pieces registration had issues"
+fi
 
 # Start Nginx server
 nginx -g "daemon off;" &