refactor: rename launchMultiModel to openMultiModel

src/cli.ts

@@ -1,6 +1,6 @@
 #!/usr/bin/env bun
 import { Command } from "commander";
-import { launchMultiModel } from "./core/open";
+import { openMultiModel } from "./core/open";
 import { closeMultiModel } from "./core/close";
 import { getBinaryName } from "./core/utils";
 
@@ -21,7 +21,7 @@ program
     try {
       const binaryName = options.binary || getBinaryName();
 
-      const result = await launchMultiModel({
+      const result = await openMultiModel({
         sessionName,
         models: options.models,
         binaryName,