Release v1.8.1

Editor & Performance

• Highlighting Cache: Introduced an NSCache for code block highlighting, eliminating redundant computations and significantly improving typing fluidness in documents with multiple code blocks.
• Database-Level Filtering: Refactored the note list to use dynamic SwiftData predicates. Filtering and searching are now handled at the database layer, greatly reducing memory overhead and UI lag for large libraries.

Visual Styling

• Unified Syntax Symbols: All Markdown markers (headers, bold, italic, etc.) now use a consistent, lightweight font weight and fixed size.
• Improved Block Rendering: Enhanced visual distinction for blockquotes with subtle backgrounds and refined list item alignment with proper hanging indents for multi-line entries.
• List Preview Fidelity: Restored "What You See Is What You Get" rendering for note summaries in the sidebar, supporting inline Markdown styles.

Engineering

• Predicate Stability: Fixed compilation errors caused by complex SwiftData predicate expressions.
• Chinese Documentation: Fully localized internal code comments to Chinese for better maintainability.