Examine source code of PrimeCE

{
  "manifest_version": 2,
  "name": "Prime Clean Extension",
  "version": "1.0.1",
  "description": "Clean, distraction-free Prime Video playback with custom controls overlay, auto-hide, and fullscreen optimization.",
  "author": "Benevolent83",
  "homepage_url": "https://github.com/Benevolent83/primeCE",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.primevideo.com/*"
      ],
      "js": [
        "content/injector.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "popup/popup.html",
    "default_title": "Prime CE Active"
  },
  "commands": {
    "toggle-clean-mode": {
      "suggested_key": {
        "default": "Alt+Shift+T"
      },
      "description": "Toggle Clean Mode (global)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "primece@benevolent83",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}