Examine source code of SmartreplyAssistant

{
  "manifest_version": 3,
  "name": "SmartReplyAssistant",
  "version": "1.30.0",
  "description": "AI side panel for Gmail & Outlook: summarize, translate and draft replies to the open email from your knowledge base.",
  "browser_specific_settings": {
    "gecko": {
      "id": "smartreplyassistant@smartreplyassistant.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "personalCommunications"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_title": "SmartReplyAssistant (toggle panel)",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "sidebar_action": {
    "default_panel": "sidepanel/sidepanel.html",
    "default_title": "SmartReplyAssistant",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "commands": {
    "analyze-mail": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "Analyze the open email"
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+U"
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "content/selectors.js",
        "content/gmail.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://outlook.live.com/*",
        "https://outlook.office365.com/*",
        "https://outlook.office.com/*"
      ],
      "js": [
        "content/selectors.js",
        "content/outlook.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content/connector-button.js",
        "content/generic.js",
        "content/agent.js"
      ],
      "run_at": "document_idle"
    }
  ]
}