Typstry v0.2.2

• Added script-aware editing policies with improved Khmer cursor movement, deletion, and composition boundaries.
• Added preview render-on-type and render-on-save modes.
• Improved preview toolbar, pane resizing, sidebar controls, and default layout restoration.
• Reduced startup time through lazy LSP, language-provider, and font initialization.
• Added Spellcheck/LSP/Developer log filtering and navigable unknown-word counts.
• Added persistent ignored words with informational blue underlines.
• Improved autocomplete dismissal and Khmer prefix spellcheck behavior.
• Improved Ctrl-hover links for complete #include and #import paths.
• Restricted spelling corrections to the context menu and disabled unreliable Khmer correction ranges.
• Renamed // @allow-preview to // @standalone-preview.
• Fixed assorted editor alignment, completion, and preview interaction issues.