Note Fusion

- **New Features** - Added settings tab and settings view - **Improvements & Enhancements** - Parsing Indent Text with new Rescript parser - Restructured timeline filter sheet options layout for better usability - Improved tab serialization and timeline filtering logic - Rewrote group-by and sort logic to simplify the API - **Refactoring & Cleanup** - Overhauled the indent text parser with a full test suite; migrated implementation between Dart and JS backends - Standardized and cleaned up localization strings across the project - Removed unused anchor-related code and added a dedicated doc view model - Extracted shared preference storage keys to named getters for maintainability - Consolidated color utilities to use named parameters for alpha values - Removed generated intl localization files and obsolete tooling (`models_rewrite`) - **Bug Fixes** - Added error handling for deadline JSON parsing failures - Fixed handling of invalid date strings for targeted fields - Fixed console sort rule to default to targeted descending - Fixed list item indent spacing in the exp_rescript parser - Removed debug logs and corrected exp_rescript build configuration - **Build & Infrastructure** - Added `exp_rescript` package to the build system - Added automatic cleanup of old generated Dart files before build - Bulk updated dependencies and fixed Rescript parser issues - Added empty document tests and fixed targeted empty value handling