Add SuperRPA integration guide, simple extension and standalone replay page

- docs/integration/superrpa-integration.zh_CN.md: complete integration guide
- rrweb-simple-ext/: minimal Chrome extension for page recording
- replay.html: standalone drag-and-drop replay viewer
- CLAUDE.md: project instructions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

rrweb-simple-ext/inject.js

@@ -0,0 +1,30 @@
+// inject.js - runs in page context, auto-starts recording
+(function() {
+  'use strict';
+
+  let stopFn = null;
+
+  // Auto-start recording
+  stopFn = rrwebRecord.record({
+    emit: function(event) {
+      window.postMessage({
+        __rrweb_action: 'event',
+        __rrweb_data: event
+      }, '*');
+    },
+    recordCrossOriginIframes: true
+  });
+
+  // Listen for stop command
+  window.addEventListener('message', function(event) {
+    if (event.source !== window) return;
+    if (event.data && event.data.__rrweb_action === 'stop') {
+      if (stopFn) {
+        stopFn();
+        stopFn = null;
+      }
+    }
+  });
+
+  console.log('[rrweb] Recording started');
+})();