Refactor project setup: remove unused VSCode configuration, update build script to make index.js executable, and add shebang to entry point

.vscode/mcp.json

@@ -1,11 +0,0 @@
-{
-  "servers": {
-    "google-nano-banana": {
-      "type": "stdio",
-      "command": "node",
-      "args": [
-        "dist/index.js"
-      ]
-    }
-  }
-}

package.json

@@ -8,7 +8,7 @@
     "big-banana-mcp": "dist/index.js"
   },
   "scripts": {
-    "build": "tsc -p tsconfig.json",
+    "build": "tsc -p tsconfig.json && chmod +x dist/index.js",
     "dev": "tsx watch src/index.ts",
     "prepare": "npm run build",
     "start": "node dist/index.js",

src/index.ts

@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+
 import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
 import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
 import * as z from 'zod/v4';