feat: MCP Browser v3.1.1 - 56+ tools, visual overlays, fixes

- Added 9 new tools: visual overlay, highlight, toast, drag-drop, etc.
- Fixed evaluateJS to support function arguments
- Fixed hover for non-visible elements
- Fixed storage operations with try/catch
- Added 10 new wait tools: clickable, element visible, text
- Fixed tool name mapping in server.js for MCP protocol
- Updated README with 60+ tools documentation
- Version bump to 3.1.1

tools/waitForElementVisible.js

@@ -0,0 +1,11 @@
+const browser = require('../browser');
+
+module.exports = async ({ selector, timeout = 15000, state = 'visible' }) => {
+  if (!selector) throw new Error('Selector é obrigatório');
+  await browser.start();
+  
+  const p = await browser.ensurePage();
+  await p.waitForSelector(selector, { state, timeout });
+  
+  return { success: true, action: 'wait_for_element_visible', selector, state };
+};