Examine source code of PJe TRT-7 Quick Access

{
  "manifest_version": 2,
  "name": "PJe TRT-7 Quick Access",
  "version": "2.0",
  "description": "Transforma números de processo em links clicáveis que abrem direto no PJe TRT-7",
  "browser_specific_settings": {
    "gecko": {
      "id": "pje-quick-access@abraaofreire.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "clipboardWrite",
    "https://mail.google.com/*",
    "https://outlook.live.com/*",
    "https://outlook.office.com/*",
    "https://outlook.office365.com/*",
    "https://pje.trt7.jus.br/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*",
        "https://outlook.live.com/*",
        "https://outlook.office.com/*",
        "https://outlook.office365.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://pje.trt7.jus.br/*"
      ],
      "js": [
        "pje-inject.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  }
}