Examine source code of Chess Capture

{
  "manifest_version": 2,
  "name": "Chess Capture",
  "version": "1.0.0",
  "description": "Capture a board, recognize pieces locally, correct the position, and analyze on Lichess.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{5b9c0395-e5fb-4a69-95ed-8d8bb140ce5f}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Capture chessboard manually",
    "default_icon": "icon.svg"
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+C"
      },
      "description": "Capture chessboard manually"
    },
    "auto-find-board": {
      "suggested_key": {
        "default": "Alt+Shift+A"
      },
      "description": "Find chessboard automatically"
    }
  },
  "content_security_policy": "default-src 'self'; script-src 'self' 'wasm-unsafe-eval'; object-src 'none'; connect-src 'self'; img-src 'self' data: blob:; style-src 'self' 'unsafe-inline'; worker-src 'self'"
}