⚡ Optimize apply() nested querySelectorAll

[pauloblikstein]

💡 What: The optimization implemented creates an in-memory array tweakButtons that caches the buttons that need to be updated during apply(). The array stores the reference to the button btn, the key it affects, and the specific val it sets. Then, apply() simply loops over this array rather than performing recursive querySelectorAll operations against the live DOM on each property change.

🎯 Why: Since apply() is called every time properties change, querying the DOM from scratch using querySelectorAll each time is extremely wasteful and inefficient. By caching these, we bypass expensive DOM lookups and make property application significantly faster.

📊 Measured Improvement:
I created a benchmark using jsdom to measure apply() execution time over 10,000 iterations.

• Baseline apply(): ~2169.17ms
• Optimized apply(): ~289.40ms
• This is a measured performance improvement of ~86.66% faster compared to the baseline code path.

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PR created automatically by Jules for task 3641409870541402012 started by @pauloblikstein

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