Examine source code of PseudoChess

{
  "manifest_version": 3,
  "name": "Pseudo Chess",
  "version": "1.0",
  "description": "A chess learning and analytical tool for chess.com. Stockfish 17.1 analysis, move quality, highlights, openings. Contact: suboticdominik@gmail.com.",
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pseudo-chess-firefox@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; worker-src 'self'; object-src 'self'"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.chess.com/*"
      ],
      "js": [
        "vendor/chess.min.js",
        "board-state.js",
        "threat-overlay.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "engine-host.html",
        "engine-host.js",
        "engine-worker-firefox.js",
        "icons/icon16.png",
        "icons/icon32.png",
        "icons/icon48.png",
        "icons/icon64.png",
        "icons/icon128.png",
        "data/ecoA.json",
        "data/ecoB.json",
        "data/ecoC.json",
        "data/ecoD.json",
        "data/ecoE.json",
        "vendor/stockfish.js",
        "vendor/stockfish-17.1-lite-single-03e3232.js",
        "vendor/stockfish-17.1-lite-single-03e3232.wasm"
      ],
      "matches": [
        "https://www.chess.com/*"
      ]
    }
  ]
}