Add options page with vector controls, whitelist, and container management

- Options page (open_in_tab) with 4 sections: fingerprint vector toggles,
  domain whitelist, container table with delete, and bulk actions
- Per-vector spoofing control: 12 independent toggles (canvas, WebGL,
  audio, navigator, screen, timezone, WebRTC, fonts, clientRects,
  plugins, battery, connection)
- Domain whitelist bypasses containerization entirely
- Delete individual containers from options UI
- Remove dead code (tabOrigins, getContainerDomain)
- Refactor profile registration into buildProfileAndRegister helper

manifest.json

@@ -15,6 +15,10 @@
   "background": {
     "scripts": ["lib/prng.js", "lib/fingerprint-gen.js", "background.js"]
   },
+  "options_ui": {
+    "page": "options/options.html",
+    "open_in_tab": true
+  },
   "browser_action": {
     "default_popup": "popup/popup.html",
     "default_icon": {