manifest.json

{
    "manifest_version": 3,
    "name": "Tab OSC",
    "version": "1.0.1",
    "description": "A simple Chrome extension",
    "icons": {
        "128": "icons/icon128.png"
    },

    "action": {
        "default_popup": "popup.html",
        "default_icon": {
            "128": "icons/icon128.png"
        }
    },

    "background": {
        "service_worker": "background.js",
        "scripts": ["background.js"]
    },

    "content_scripts": [
        {
            "matches": ["<all_urls>"],
            "js": ["content.js"]
        }
    ],

    "permissions": ["tabs", "storage", "webSocketPermissions"],

    "content_security_policy": {
      "extension_pages": "script-src 'self'; object-src 'self'; connect-src ws://localhost:8080"
    },

    "host_permissions": ["<all_urls>"],

    "web_accessible_resources": [
        {
            "resources": ["content.js"],
            "matches": ["<all_urls>"]
        }
    ]
}