Examine source code of flow.plugin

{
  "manifest_version": 3,
  "name": "flow.plugin",
  "version": "1.2.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "flow-plugin-unified@makeworkflow.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "description": "Unified browser extension combining all Flow Plugin functionality for Azure DevOps boards",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://*.dev.azure.com/*",
    "https://dev.azure.com/*",
    "https://*.visualstudio.com/*",
    "https://*.blob.core.windows.net/*"
  ],
  "optional_host_permissions": [
    "https://*/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "Flow_Bot.png",
      "32": "Flow_Bot.png",
      "48": "Flow_Bot.png",
      "128": "Flow_Bot.png"
    }
  },
  "icons": {
    "16": "Flow_Bot.png",
    "32": "Flow_Bot.png",
    "48": "Flow_Bot.png",
    "128": "Flow_Bot.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://dev.azure.com/*"
      ],
      "css": [
        "hide-until-translated.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icon-button.png"
      ],
      "matches": [
        "https://dev.azure.com/*"
      ]
    }
  ]
}