Examine source code of OpenCode Stats

{
  "manifest_version": 3,
  "name": "OpenCode Stats",
  "version": "1.2.0",
  "description": "Per-model cost stats for opencode.ai usage",
  "content_scripts": [
    {
      "matches": [
        "https://opencode.ai/workspace/*/usage"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "opencode-stats@local.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}