feat: optional built-in vless/xray with proxychains4 toggle

- ai-setup.sh now asks interactive Y/n prompt for vless mode
- On Y: installs xray + proxychains-ng, deploys configs, enables proxychains4 in all ai-* launchers
- On N: generates plain ai-* scripts without proxychains
- Templates moved to home-configs/xray/ and home-configs/proxychains/

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

home-configs/proxychains/proxychains-xray.conf

@@ -0,0 +1,9 @@
+# ProxyChains-NG config for xray SOCKS5 proxy
+strict_chain
+proxy_dns
+remote_dns_subnet 224
+tcp_read_time_out 15000
+tcp_connect_time_out 8000
+
+[ProxyList]
+socks5 127.0.0.1 1080