Examine source code of Password Manager

{
  "manifest_version": 3,
  "name": "Password Manager",
  "version": "1.0.0",
  "description": "Gestionnaire de mots de passe zero-knowledge avec chiffrement AES-256-GCM côté client",
  "browser_specific_settings": {
    "gecko": {
      "id": "password-manager@mewtit.dev",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "clipboardWrite"
  ],
  "host_permissions": [
    "https://password-manager-api-o1st.onrender.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "commands": {
    "autofill-credentials": {
      "suggested_key": {
        "default": "Alt+Shift+M"
      },
      "description": "Remplir identifiant + mot de passe"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon-48.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}