feat: extension skeleton with manifest, settings module, and placeholder icons

Co-authored-by: Cursor <cursoragent@cursor.com>

manifest.json

@@ -0,0 +1,28 @@
+{
+  "manifest_version": 2,
+  "name": "Reddit Tweaks",
+  "version": "1.0.0",
+  "description": "Reskins old Reddit post listings with badge-style subreddit and comment indicators.",
+  "permissions": ["storage", "activeTab"],
+  "icons": {
+    "48": "icons/icon-48.png",
+    "96": "icons/icon-96.png"
+  },
+  "browser_action": {
+    "default_icon": "icons/icon-48.png",
+    "default_popup": "popup/popup.html",
+    "default_title": "Reddit Tweaks Settings"
+  },
+  "content_scripts": [
+    {
+      "matches": ["*://old.reddit.com/*", "*://www.reddit.com/*"],
+      "css": ["content/styles/badges.css"],
+      "js": [
+        "lib/settings.js",
+        "content/tweaks/badges.js",
+        "content/main.js"
+      ],
+      "run_at": "document_idle"
+    }
+  ]
+}