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/waitForClickable.js

@@ -0,0 +1,23 @@
+const browser = require('../browser');
+
+module.exports = async ({ selector, timeout = 15000 }) => {
+  if (!selector) throw new Error('Selector é obrigatório');
+  await browser.start();
+  
+  const p = await browser.ensurePage();
+  await p.waitForSelector(selector, { state: 'visible', timeout });
+  
+  const result = await p.evaluate((sel) => {
+    const el = document.querySelector(sel);
+    if (!el) return { clickable: false, reason: 'not found' };
+    
+    const rect = el.getBoundingClientRect();
+    const isVisible = rect.width > 0 && rect.height > 0;
+    const isEnabled = !el.disabled;
+    const isClickable = isVisible && isEnabled && window.getComputedStyle(el).pointerEvents !== 'none';
+    
+    return { clickable: isClickable, visible: isVisible, enabled: isEnabled, rect };
+  }, selector);
+  
+  return { success: true, action: 'wait_for_clickable', selector, ...result };
+};