Examine source code of Local Live Captions

{
  "manifest_version" : 3 ,
  "name" : "Local Live Captions",
  "version" : "1.4.3",
  "description" : "Automatic on-screen English captions for any audio or video playing in a tab. Speech recognition runs locally in the browser.",
  "author": "EricZhou866",
  "homepage_url" : "https://github.com/EricZhou866/LiveCaption",
  "browser_specific_settings": {
    "gecko": {
      "id": "live-caption@ericzhou866",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions" : [
    "storage" ,
    "tabs" 
  ],
  "optional_permissions" : [
    "downloads" 
  ],
  "optional_host_permissions" : [
    "<all_urls>" 
  ],
  "host_permissions" : [
    "https://huggingface.co/*" ,
    "https://cdn-lfs.huggingface.co/*" ,
    "https://cdn-lfs-us-1.huggingface.co/*" 
  ],
  "background" : {
    "scripts" : [
      "background/settings.js" ,
      "background/wav.js" ,
      "background/segmenter.js" ,
      "background/engine.js" ,
      "background/transcript.js" ,
      "background/background.js" 
    ]
  },
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "all_frames" : true ,
      "run_at" : "document_start" ,
      "js" : [
        "content/shared.js" ,
        "content/capture.js" ,
        "content/overlay.js" ,
        "content/main.js" 
      ]
    }
  ],
  "action" : {
    "default_title" : "Local Live Captions",
    "default_popup" : "popup/popup.html",
    "default_icon" : {
      "16" : "icons/icon-16.png",
      "32" : "icons/icon-32.png"
    }
  },
  "options_ui" : {
    "page": "options/options.html" ,
    "open_in_tab": true
  },
  "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"
  },
  "commands" : {
    "toggle-captions": {
      "suggested_key": {
        "default": "Ctrl+Shift+L"
      },
      "description" : "Turn live captions on or off for the current tab"
    }
  },
  "content_security_policy" : {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  }
}