Examine source code of Chronosky - Post scheduler for Bluesky

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "version": "1.0.4",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "chronosky@chronosky.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "cookies",
    "storage"
  ],
  "host_permissions": [
    "https://api.chronosky.app/*",
    "https://linkcard.chronosky.app/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Chronosky",
    "default_popup": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://bsky.app/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://bsky.app/*"
      ],
      "js": [
        "main-world.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon-32.png"
      ],
      "matches": [
        "https://bsky.app/*"
      ]
    }
  ]
}