Examine source code of chirp-silencer

{
  "name": "Chirp Silencer",
  "description": "Mute unwanted tweets from your timeline",
  "version": "0.2",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "noreply@chirpsilencer.com"
    }
  },
  "background": {
    "scripts": [
      "/scripts/background.js"
    ]
  },
  "action": {
    "default_icon": "/images/logo.png"
  },
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "16": "/images/logo.png",
    "48": "/images/logo.png",
    "128": "/images/logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.twitter.com/settings/add_muted_keyword",
        "https://*.x.com/settings/add_muted_keyword"
      ],
      "js": [
        "/scripts/content.js"
      ],
      "css": [
        "/styles/content.css"
      ]
    }
  ]
}