1. Batch Processing: Posts are processed in batches using requestIdleCallback.
2. Debounced Updates: MutationObserver events are debounced to reduce redundant processing.
3. Optimized Blocklist: A Set is used for blocklistSet for faster lookups.
4. CSS Injection: Styles are injected only once.
5. Error Handling: Added error handling for GM.getValue and GM.setValue.
6. Code Modularization: Split logic into smaller, reusable functions like hidePost and processPostsBatch.
7. Modern JavaScript: Used let, const, optional chaining (?.), and nullish coalescing (??)