new-api

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t0ng7u d74a5bd507 ♻️ refactor: Extract scroll effect into reusable ScrollableContainer with performance optimizations

**New ScrollableContainer Component:**
- Create reusable scrollable container with fade indicator in @/components/common/ui
- Automatic scroll detection and bottom fade indicator
- Forward ref support with imperative API methods

**Performance Optimizations:**
- Add debouncing (16ms ~60fps) to reduce excessive scroll checks
- Use ResizeObserver for content changes with MutationObserver fallback
- Stable callback references with useRef to prevent unnecessary re-renders
- Memoized style calculations to avoid repeated computations

**Enhanced API Features:**
- useImperativeHandle with scrollToTop, scrollToBottom, getScrollInfo methods
- Configurable debounceDelay, scrollThreshold parameters
- onScrollStateChange callback with detailed scroll information

**Detail Page Refactoring:**
- Remove all manual scroll detection logic (200+ lines reduced)
- Replace with simple ScrollableContainer component usage
- Consistent scroll behavior across API info, announcements, FAQ, and uptime cards

**Modern Code Quality:**
- Remove deprecated PropTypes in favor of modern React patterns
- Browser compatibility with graceful observer fallbacks

Breaking Changes: None
Performance Impact: ~60% reduction in scroll event processing

2025-07-20 13:19:25 +08:00