Examine source code of BetterBuff

{
  "manifest_version": 3,
  "name": "BetterBuff",
  "description": "Enhance your website experience on Buff163",
  "version": "1.1.0",
  "icons": {
    "128": "icon/128.png",
    "512": "icon/512.png"
  },
  "host_permissions": [
    "*://*.buff.163.com/*"
  ],
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject.js",
        "ch_patterns.json"
      ],
      "matches": [
        "*://*.buff.163.com/*"
      ]
    },
    {
      "resources": [
        "content-scripts/buff.css"
      ],
      "matches": [
        "*://*.buff.163.com/*"
      ]
    }
  ],
  "developer": {
    "name": "Rums",
    "url": "https://github.com/GODrums"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "betterbuff@rums.dev",
      "strict_min_version": "109.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "BetterBuff",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.buff.163.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "content-scripts/buff.js"
      ]
    },
    {
      "matches": [
        "*://*.buff.163.com/*"
      ],
      "run_at": "document_start",
      "css": [
        "content-scripts/injection.css"
      ],
      "js": [
        "content-scripts/injection.js"
      ]
    }
  ]
}