Examine source code of Claude Limit Tracker

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  "description": "Shows ~token count, cache timer, and native session/weekly usage bars on claude.ai.",
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  "content_scripts": [
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      "css": [
        "src/styles.css"
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      "js": [
        "src/content/constants.js",
        "src/content/bridge-client.js",
        "src/vendor/o200k_base.js",
        "src/content/tokens.js",
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        "src/content/main.js"
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