This ticket covers a set of optimizations in the hot path of DOM updates (src/main/DeltaUpdates.mjs and src/main/render/DomApiRenderer.mjs).

The main thread can process batches of 600+ deltas at a time. The previous implementations relied on Array.from().find() for NodeLists and Object.entries().forEach() for object iteration, which creates significant garbage collection (GC) pressure due to intermediate array allocations and closure creation.

Changes:

1. Replaced Array.from(childNodes).find(...) with standard for loops in DeltaUpdates.mjs (getFragmentNodes, removeNode, updateVtext).
2. Replaced Object.entries(delta).forEach(...) with for...in loops in DeltaUpdates.updateNode and DomApiRenderer.createDomTree for attributes and styles.
3. Removed a duplicate getFragmentNodes method from DeltaUpdates.mjs.

These changes should yield a measurable reduction in memory allocations and frame drops during intense update phases.