Examine source code of Open-Deck

{
  "name": "Open-Deck",
  "version": "1.1.3.3",
  "manifest_version": 2,
  "description": "The OpenSource Deck",
  "default_locale": "ja",
  "icons": {
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "opd_release@kwdev",
      "strict_min_version": "115.0"
    },
    "gecko_android": {
      "id": "opd_release@kwdev",
      "strict_min_version": "115.0"
    }
  },
  "web_accessible_resources": [
    "extensions/utils_helper.js",
    "extensions/text_review_helper.js",
    "extensions/auto_reload_helper.js",
    "extensions/media_viewer_block_helper.js",
    "extensions/media_viewer/media_viewer.js",
    "icon.png",
    "icon/logo_icon.svg",
    "profile_debug.html",
    "about_opd.html",
    "icon/settings.svg",
    "icon/banner_hide.svg",
    "icon/top_hide.svg",
    "icon/pin.svg",
    "icon/pinned.svg",
    "icon/post.svg",
    "icon/text_review.svg",
    "icon/column_move.svg",
    "icon/column_close.svg",
    "icon/column_w_size.svg",
    "icon/column_add_1st.svg",
    "icon/column_add_2nd.svg",
    "icon/tl_column.svg",
    "icon/notice_column.svg",
    "icon/exp_column.svg",
    "icon/single_view.svg",
    "icon/second_view.svg",
    "icon/profile_save.svg",
    "icon/profile_delete.svg",
    "icon/forward.svg",
    "icon/next.svg",
    "icon/download.svg"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "webRequest",
    "declarativeNetRequest",
    "*://*.twitter.com/*",
    "*://*.x.com/*",
    "*://*.twimg.com/*",
    "*://*.kwdev-sys.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content.js",
        "extensions/utils.js",
        "extensions/text_review.js",
        "extensions/auto_reload.js",
        "extensions/media_viewer_block.js",
        "extensions/media_viewer/media_viewer.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  }
}