Examine source code of Time Lock Blocker

{
  "manifest_version": 3,
  "name": "Time Lock Blocker",
  "version": "1.2.0",
  "description": "Block distracting websites for a set duration. Set a timer and stay focused — PIN protection, Spaces, and persistent block list.",
  "author": "Jashith",
  "homepage_url": "https://github.com/Jashith127",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "timelock-blocker@extension",
      "strict_min_version": "109.0"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Time Lock Blocker"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "downloads",
    "declarativeNetRequest",
    "declarativeNetRequestFeedback"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_static",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "block.html",
        "block.js",
        "logo.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}