Examine source code of Card Caliper

{
  "manifest_version": 3,
  "name": "Card Caliper",
  "version": "0.6.0",
  "description": "Measure trading-card centering with adjustable guides and local edge detection.",
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab",
    "scripting"
  ],
  "optional_host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "action": {
    "default_title": "Card Caliper",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    {
      "resources": [
        "src/model-worker-raw-obb-v2.js",
        "vendor/ort.wasm.min.js",
        "vendor/ort-wasm-simd-threaded.mjs",
        "vendor/ort-wasm-simd-threaded.wasm",
        "models/card-detector-real-photo-v2.onnx"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "card-caliper@fleeced.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}