Examine source code of Meelio

{
  "manifest_version": 3,
  "name": "Meelio",
  "description": "Focus, calm & productivity with every new tab",
  "version": "1.0.2",
  "icons": {
    "16": "/icon-16.png",
    "32": "/icon-32.png",
    "48": "/icon-48.png",
    "128": "/icon-128.png"
  },
  "permissions": [
    "storage",
    "alarms",
    "tabs",
    "webNavigation",
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess"
  ],
  "optional_permissions": [
    "tabGroups",
    "bookmarks",
    "notifications"
  ],
  "host_permissions": [
    "https://*.meelio.io/*"
  ],
  "optional_host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "blocked.html",
        "**/*.svg",
        "**/*.png",
        "**/*.jpg",
        "**/*.webp",
        "**/*.avif",
        "**/*.mp4",
        "**/*.mp3",
        "**/*.json"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "https://app.meelio.io/*",
      "https://dev.meelio.io/*",
      "http://localhost:4000/*"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "meelio@meelio.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "locationInfo"
        ]
      }
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com data:"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "action": {
    "default_title": "Meelio",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}