Examine source code of GPT Pinboard

{
  "manifest_version": 2,
  "name": "GPT Pinboard — ChatGPT Message Pinner",
  "description": "Pin individual ChatGPT messages. Add names and tags, search instantly, jump back to conversations. Dark mode support. Local storage.",
  "version": "2.1.1",
  "permissions": [
    "storage",
    "tabs",
    "https://chatgpt.com/*",
    "https://chat.openai.com/*",
    "https://gptpins.dps.codes/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://chat.openai.com/*"
      ],
      "js": [
        "idb.js",
        "content_script_chatgpt.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://gptpins.dps.codes/*"
      ],
      "js": [
        "web_verification.js"
      ],
      "run_at": "document_end"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "icons/icon-16.png",
    "icons/icon-32.png"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "homepage_url": "https://gptpins.dps.codes",
  "applications": {
    "gecko": {
      "id": "pingpt@devendrapratap.dev"
    }
  }
}