fix wsh ai arg handling after "-" (for stdin) (wavetermdev#2129)

Author: sawka

.vscode/settings.json

@@ -5,6 +5,7 @@
     "editor.tabSize": 4,
     "editor.insertSpaces": false,
     "prettier.useEditorConfig": true,
+    "diffEditor.renderSideBySide": false,
     "[javascript]": {
         "editor.defaultFormatter": "esbenp.prettier-vscode"
     },

cmd/wsh/cmd/wshcmd-ai.go

@@ -135,6 +135,14 @@ func aiRun(cmd *cobra.Command, args []string) (rtnErr error) {
 			return fmt.Errorf("reading from stdin: %w", err)
 		}
 		message.Write(data)
+		
+		// Also include any remaining arguments (excluding the "-" itself)
+		if len(args) > 1 {
+			if message.Len() > 0 {
+				message.WriteString(" ")
+			}
+			message.WriteString(strings.Join(args[1:], " "))
+		}
 	} else {
 		message.WriteString(strings.Join(args, " "))
 	}