Examine source code of RS Levels Capture

{
  "manifest_version": 3,
  "name": "RS Levels Capture",
  "description": "Capture RocketScooter chart levels for TradingView, Thinkorswim, and local RS Levels tools.",
  "version": "0.4.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "rs-levels-capture@rs-levels.local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteContent"
        ]
      }
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "storage",
    "clipboardWrite",
    "scripting"
  ],
  "host_permissions": [
    "http://127.0.0.1/*",
    "http://localhost/*",
    "https://rocket.place/*",
    "https://*.rocket.place/*",
    "https://rocketscooter.com/*",
    "https://*.rocketscooter.com/*"
  ],
  "optional_host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "src/shared.js",
      "src/background.js"
    ]
  },
  "action": {
    "default_title": "RS Levels",
    "default_popup": "src/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png"
    }
  },
  "options_page": "src/options.html",
  "content_scripts": [
    {
      "matches": [
        "https://rocket.place/*",
        "https://*.rocket.place/*",
        "https://rocketscooter.com/*",
        "https://*.rocketscooter.com/*"
      ],
      "js": [
        "src/shared.js",
        "src/content-script.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    },
    {
      "matches": [
        "https://rocket.place/*",
        "https://*.rocket.place/*",
        "https://rocketscooter.com/*",
        "https://*.rocketscooter.com/*"
      ],
      "js": [
        "src/capture-rules.js",
        "src/page-hook.js",
        "src/page-reader.js"
      ],
      "run_at": "document_start",
      "world": "MAIN",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "src/capture-rules.js",
        "src/page-hook.js",
        "src/page-reader.js"
      ],
      "matches": [
        "https://rocket.place/*",
        "https://*.rocket.place/*",
        "https://rocketscooter.com/*",
        "https://*.rocketscooter.com/*"
      ]
    }
  ]
}