feat(config): switch webPort to URI-style webListen address

- replace integer webPort with MultiProtocolSocketAddress webListen
  (default: http://0.0.0.0:4665) in controller config
- rename Swing UI item to "Web API 监听地址" and validate as full URI
- update WebServer binding to honor configured host and port
- normalize legacy webPort integers to http://0.0.0.0:<port> on load
  and keep JSON API backward compatibility
- update i18n keys in zh_CN and en_US resource bundles
- update root klalb-config.json and AGENTS.md documentation

src/klalb_en_US.properties

@@ -114,5 +114,5 @@ multifill=Multi-Core - Fill Cores Sequentially (Recommended for general-purpose
 multiscatter=Multi-Core - Spread Load Evenly (Optimized for multi-socket NUMA architectures)
 webapisettings=Web API settings
 enablewebapi=Enable Web API
-webport=Web port
-invaildwebport=Invalid web port number
+weblistenaddr=Web API listen address
+invaildweblistenaddr=Invalid Web API listen address