Examine source code of RDLTR: Read Later - Save Articles & Links

{
  "manifest_version": 3,
  "name": "RDLTR: Read Later - Save Articles & Links",
  "version": "1.7.8",
  "description": "Save articles to read later. Click to save, read to clear. TLDRs, search. Unclog tabs, keep the curiosity. Inbox zero for reading.",
  "homepage_url": "https://rdltr.app",
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage"
  ],
  "host_permissions": [
    "https://rdltr.app/*",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://claude.ai/*",
        "https://www.perplexity.ai/*",
        "https://gemini.google.com/*"
      ],
      "js": [
        "inject.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://gemini.google.com/*"
      ],
      "js": [
        "gemini.js"
      ],
      "run_at": "document_idle",
      "world": "MAIN"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "action": {
    "default_title": "RDLTR :: Alt+Shift+R save / Shift+DD summarize / Shift+AA archive",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "commands": {
    "save-link": {
      "suggested_key": {
        "default": "Alt+Shift+R",
        "mac": "Alt+Shift+R"
      },
      "description": "Save current page (R for RDLTR)"
    },
    "save-link-alt": {
      "suggested_key": {
        "default": "Alt+Shift+L",
        "mac": "Alt+Shift+L"
      },
      "description": "Save current page (L for Link)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hello@rdltr.app",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}