initial commit

src/content/content.js

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+/**
+ * content.js — Content script injected into matching pages.
+ * Communicates with the background service worker via chrome.runtime.
+ * Use cautiously: runs in the page's DOM context, so isolate from page globals.
+ */
+
+(function () {
+  'use strict';
+
+  console.log('[goon-plugin] Content script loaded');
+
+  // Example: inject a small element into the page.
+  // Uncomment and customize as needed.
+  //
+  // const badge = document.createElement('div');
+  // badge.textContent = 'Goon Plugin Active';
+  // badge.style.cssText = 'position:fixed;bottom:8px;right:8px;padding:4px 8px;...';
+  // document.body.appendChild(badge);
+})();