Examine source code of Noutieren (Notes)

{
  "manifest_version": 3,
  "name": "Noutieren",
  "version": "1.3.0",
  "description": "Private, local-first notes organized into color-labeled tabs. Rich text, instant search, no accounts, no network access.",
  "browser_specific_settings": {
    "gecko": {
      "id": "colornote-tabs@local.extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "optional_permissions": [
    "tabs"
  ],
  "action": {
    "default_title": "Open Noutieren sidebar",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "sidebar_action": {
    "default_title": "Noutieren",
    "default_panel": "index.html?view=sidebar",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    },
    "open_at_install": false
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self'; img-src 'self' data:; connect-src 'none'; base-uri 'none'; form-action 'none'"
  }
}