feat(amazonq): add exit logs for lsp (#5861)

Author: rli

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClientImpl.kt

@@ -149,6 +149,7 @@ class AmazonQLanguageClientImpl(private val project: Project) : AmazonQLanguageC
             MessageType.Error -> Level.ERROR
             MessageType.Warning -> Level.WARN
             MessageType.Info, MessageType.Log -> Level.INFO
+            else -> Level.WARN
         }
 
         if (type == Level.ERROR &&

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLspService.kt

@@ -119,10 +119,13 @@ internal class LSPProcessListener : ProcessListener {
             }
         } else if (ProcessOutputType.isStderr(outputType)) {
             LOG.warn { "LSP process stderr: ${event.text}" }
+        } else if (outputType == ProcessOutputType.SYSTEM) {
+            LOG.info { "LSP system events: ${event.text}" }
         }
     }
 
     override fun processTerminated(event: ProcessEvent) {
+        LOG.info { "LSP process terminated with exit code ${event.exitCode}" }
         try {
             this.outputStreamWriter.close()
             this.outputStream.close()