Examine source code of FlyFree Glide

{
  "manifest_version": 3,
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "version": "1.2.0",
  "icons": {
    "128": "icons/icon.png"
  },
  "default_locale": "en",
  "action": {
    "default_title": "__MSG_default_title__",
    "default_icon": {
      "128": "icons/icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "flyfree-glide@girigiribauer.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://x.com/*",
    "https://twitter.com/*",
    "https://girigiribauer.github.io/FlyFree-Glide/oauth/callback*",
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://bsky.app/*"
      ],
      "js": [
        "content-scripts/bsky.js"
      ]
    },
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content-scripts/injector.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "https://girigiribauer.github.io/FlyFree-Glide/oauth/callback*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/oauth-callback.js"
      ]
    }
  ]
}