Examine source code of Tab Commander

{
  "manifest_version": 3,
  "name": "Tab Commander",
  "version": "1.6.5",
  "description": "Command palette for tabs, windows, and browser actions.",
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-commander@kyle.addons",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "tabs",
    "bookmarks",
    "sessions",
    "storage",
    "scripting",
    "activeTab",
    "webNavigation",
    "downloads",
    "clipboardWrite",
    "contextMenus"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "browser-namespace.js",
      "favicon-utils.js",
      "gist-sync.js",
      "jsqr.js",
      "popup-tools-utils.js",
      "random-string-utils.js",
      "screenshot-utils.js",
      "match-url.js",
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Tab Commander",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "browser-namespace.js",
        "favicon-utils.js",
        "favicon-badge.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://youtube.com/*",
        "*://*.facebook.com/*",
        "*://facebook.com/*",
        "*://*.fb.com/*",
        "*://fb.com/*"
      ],
      "js": [
        "browser-namespace.js",
        "distraction-blocker-utils.js",
        "distraction-blocker.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "browser-namespace.js",
        "element-remover-utils.js",
        "element-remover.js"
      ],
      "run_at": "document_start"
    }
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+K",
        "mac": "Command+K"
      },
      "description": "Open Tab Commander"
    },
    "previous-tab": {
      "suggested_key": {
        "default": "Alt+Q",
        "mac": "Alt+Q"
      },
      "description": "Switch to previous tab"
    },
    "duplicate-tab": {
      "suggested_key": {
        "default": "Alt+Shift+D",
        "mac": "Command+Shift+D"
      },
      "description": "Duplicate tab"
    },
    "copy-url": {
      "suggested_key": {
        "default": "Alt+Shift+C",
        "mac": "Command+Shift+C"
      },
      "description": "Copy current tab URL"
    },
    "generate-random-string": {
      "description": "Open Random String Generator"
    }
  }
}