Examine source code of MochiDim - Dark Mode & Blue Light Filter for Manga

{
  "manifest_version": 3,
  "name": "MochiDim: Manga Dark Mode & Blue Light Filter",
  "description": "Warm dim and blue light filter for manga, comics, webtoons & any image-heavy site. A real dark mode that keeps the artwork true.",
  "version": "1.0.4",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "128": "icon/128.png"
  },
  "homepage_url": "https://mochipanel.com",
  "permissions": [
    "storage",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "https://mangadex.org/*",
    "https://comick.io/*",
    "https://bato.to/*",
    "https://asuracomic.net/*",
    "https://www.webtoons.com/*",
    "https://webtoons.com/*",
    "https://mangaplus.shueisha.co.jp/*",
    "https://cubari.moe/*",
    "https://tapas.io/*",
    "https://www.tapas.io/*",
    "https://api.polar.sh/*"
  ],
  "optional_host_permissions": [
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "mochidim@mochipanel.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "action": {
    "default_title": "MochiDim",
    "default_icon": {
      "16": "icon/16.png",
      "32": "icon/32.png"
    },
    "default_popup": "popup.html"
  },
  "commands": {
    "toggle-dim": {
      "suggested_key": {
        "default": "Ctrl+Shift+M",
        "mac": "Command+Shift+M"
      },
      "description": "Toggle MochiDim on/off"
    },
    "cycle-warmth": {
      "suggested_key": {
        "default": "Ctrl+Shift+Comma",
        "mac": "Command+Shift+Comma"
      },
      "description": "Cycle MochiDim warmth (paper → dusk → midnight)"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://asuracomic.net/*",
        "https://bato.to/*",
        "https://comick.io/*",
        "https://cubari.moe/*",
        "https://mangadex.org/*",
        "https://mangaplus.shueisha.co.jp/*",
        "https://tapas.io/*",
        "https://webtoons.com/*",
        "https://www.tapas.io/*",
        "https://www.webtoons.com/*"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}