Examine source code of Proxon Browser Observer

{
  "manifest_version": 3,
  "name": "Proxon — Workflow Signal",
  "short_name": "Proxon",
  "version": "0.1.3",
  "description": "Workflow signal: counts, timings, hostnames. Optional AI-prompt capture on ChatGPT/Claude/Gemini/DeepSeek (off by default).",
  "homepage_url": "https://proxonai.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "proxon-workflow-signal@proxonai.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteActivity"
        ],
        "optional": [
          "technicalAndInteraction",
          "websiteContent"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background/index.js"
    ]
  },
  "action": {
    "default_popup": "popup/index.html",
    "default_title": "Proxon Workflow Signal",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/index.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    },
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://chat.openai.com/*"
      ],
      "js": [
        "content/ai-prompts/chatgpt.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    },
    {
      "matches": [
        "https://claude.ai/*"
      ],
      "js": [
        "content/ai-prompts/claude.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    },
    {
      "matches": [
        "https://gemini.google.com/*"
      ],
      "js": [
        "content/ai-prompts/gemini.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    },
    {
      "matches": [
        "https://chat.deepseek.com/*"
      ],
      "js": [
        "content/ai-prompts/deepseek.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ]
}