Examine source code of Tradyr

{
  "manifest_version": 3,
  "name": "Tradyr — dynasty values everywhere",
  "short_name": "Tradyr",
  "version": "0.5.8",
  "description": "Dynasty fantasy football values everywhere — composite KTC + FantasyCalc badges + this-week projections on Sleeper, KTC, FantasyCalc, FantasyPros, Yahoo, ESPN, MFL, Fleaflicker, X, plus news sites (NFL.com, DLF, PFF, RotoWire, The Athletic, Reddit, and more).",
  "author": "Tradyr",
  "homepage_url": "https://tradyr.app",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_title": "Tradyr",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png"
    }
  },
  "background": {
    "service_worker": "src/background/background.js",
    "scripts": [
      "src/background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://sleeper.com/*",
        "https://*.sleeper.com/*",
        "https://keeptradecut.com/*",
        "https://*.keeptradecut.com/*",
        "https://fantasycalc.com/*",
        "https://*.fantasycalc.com/*",
        "https://www.fantasypros.com/*",
        "https://*.fleaflicker.com/*",
        "https://football.fantasysports.yahoo.com/*",
        "https://fantasy.espn.com/*",
        "https://*.myfantasyleague.com/*",
        "https://twitter.com/*",
        "https://*.twitter.com/*",
        "https://x.com/*",
        "https://*.x.com/*",
        "https://*.espn.com/*",
        "https://*.nfl.com/*",
        "https://*.dynastyleaguefootball.com/*",
        "https://*.footballguys.com/*",
        "https://*.pff.com/*",
        "https://*.rotowire.com/*",
        "https://*.rotoballer.com/*",
        "https://*.numberfire.com/*",
        "https://*.cbssports.com/*",
        "https://sports.yahoo.com/*",
        "https://*.thefantasyfootballers.com/*",
        "https://*.draftsharks.com/*",
        "https://*.pro-football-reference.com/*",
        "https://*.nbcsports.com/*",
        "https://*.theathletic.com/*",
        "https://*.reddit.com/*",
        "https://reddit.com/*"
      ],
      "js": [
        "src/content/content.js"
      ],
      "css": [
        "src/content/content.css"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://api.tradyr.app/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tradyr@tradyr.app",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}