Examine source code of Minimal X / Twitter

{
  "name": "Minimal X / Twitter",
  "short_name": "Minimal X",
  "version": "1.4.0",
  "description": "A clean, focused interface for X (formerly Twitter) with a professional layout.",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{9986c0e2-9fd5-4d2f-a6a7-ae85d638b852}",
      "strict_min_version": "120.0"
    }
  },
  "icons": {
    "128": "icons/128.png"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "scripting",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "*://*.twitter.com/*",
    "*://*.x.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "*://*.twitter.com/*",
        "*://*.x.com/*"
      ],
      "js": [
        "override.js"
      ],
      "world": "MAIN"
    },
    {
      "run_at": "document_start",
      "matches": [
        "*://*.twitter.com/*",
        "*://*.x.com/*"
      ],
      "css": [
        "override.css"
      ]
    }
  ]
}