feat: improve Clipboard Sniffer extension integration and UI fixes

extension/content.js

@@ -0,0 +1,66 @@
+// content.js
+// This script runs on the web app page (e.g. localhost:5173)
+
+console.log('Tools App Extension: Content script injected');
+
+// Listen for messages from the Web App (Vue)
+window.addEventListener('message', (event) => {
+  // We should verify the origin, but since we are running on the page itself, we trust window messages
+  // from our own app.
+  if (event.source !== window) return;
+
+  if (event.data.type && event.data.type === 'TOOLS_APP_INIT') {
+    // console.log('Tools App Extension: Received init from Web App');
+    window.postMessage({ type: 'TOOLS_APP_EXTENSION_READY', version: '1.0' }, '*');
+  }
+
+  // Heartbeat check
+  if (event.data.type === 'TOOLS_APP_PING') {
+    try {
+      // Only respond if the extension context is still valid
+      if (chrome.runtime && chrome.runtime.id) {
+        window.postMessage({ type: 'TOOLS_APP_PONG' }, '*');
+      }
+    } catch (e) {
+      // Extension context invalidated
+      // console.warn('Extension context invalidated during ping');
+    }
+  }
+
+  // Example: Receive request to sniff clipboard
+  if (event.data.type === 'TOOLS_APP_START_SNIFFING') {
+    // console.log('Tools App Extension: Start sniffing request');
+    // Relay to background script
+    try {
+      chrome.runtime.sendMessage({ action: 'startSniffing' });
+    } catch (e) {
+      console.warn('Tools App Extension: Connection lost, please reload the page', e);
+    }
+  }
+
+  if (event.data.type === 'TOOLS_APP_STOP_SNIFFING') {
+    // console.log('Tools App Extension: Stop sniffing request');
+    try {
+      chrome.runtime.sendMessage({ action: 'stopSniffing' });
+    } catch (e) {
+      // ignore
+    }
+  }
+});
+
+// Listen for messages from the Extension Background
+try {
+  chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
+    if (request.action === 'clipboardUpdate') {
+      // Send to Web App
+      window.postMessage({ type: 'TOOLS_APP_CLIPBOARD_UPDATE', content: request.content }, '*');
+    }
+
+    // Respond to background ping to confirm we are alive
+    if (request.action === 'ping') {
+      sendResponse('pong');
+    }
+  });
+} catch (e) {
+  console.warn('Tools App Extension: Could not add listener', e);
+}