overhaul: migrated basic JavaScript to TypeScript, began consolidation efforts

RELEASE_NOTES_TEMPLATE.md

@@ -3,7 +3,7 @@
 ## [Unreleased]
 
 ### Summary
-Web UI improvements with Tailwind CSS migration, component library, and optional card image caching for faster performance.
+Web UI improvements with Tailwind CSS migration, TypeScript conversion, component library, and optional card image caching for faster performance and better maintainability.
 
 ### Added
 - **Card Image Caching**: Optional local image cache for faster card display
@@ -15,14 +15,24 @@ Web UI improvements with Tailwind CSS migration, component library, and optional
   - Interactive examples of all UI components
   - Reusable Jinja2 macros for consistent design
   - Component partial templates for reuse across pages
+- **TypeScript Support**: Migrated JavaScript to TypeScript for better code quality
+  - Type definitions for state management, telemetry, and UI components
+  - Improved IDE support with autocomplete and type checking
+  - Integrated into build process (compiles during Docker build)
 
 ### Changed
 - **Migrated CSS to Tailwind**: Consolidated and unified CSS architecture
   - Tailwind CSS v3 with custom MTG color palette
   - PostCSS build pipeline with autoprefixer
   - Minimized inline styles in favor of shared CSS classes
+  - **Light theme visual improvements**: Warm earth tone palette with better button/panel contrast
+- **JavaScript Modernization**: Updated to modern JavaScript patterns
+  - Converted to TypeScript for better type safety
+  - Replaced `var` with `const`/`let` throughout
+  - Improved error handling and code organization
 - **Docker Build Optimization**: Improved developer experience
   - Hot reload for templates and CSS (no rebuild needed)
+  - TypeScript compilation integrated into build process
 - **Template Modernization**: Migrated templates to use component system
 
 ### Removed
@@ -35,11 +45,19 @@ _None_
 - Hot reload for CSS/template changes (no Docker rebuild needed)
 - Optional image caching reduces Scryfall API calls
 - Faster page loads with optimized CSS
+- TypeScript compilation produces optimized JavaScript
 
 ### For Users
 - Faster card image loading with optional caching
 - Cleaner, more consistent web UI design
 - Improved page load performance
+- More reliable JavaScript behavior
+
+### For Developers
+- TypeScript provides better IDE support and error detection
+- Clear type definitions for all JavaScript utilities
+- Easier onboarding with typed interfaces
+- Automated build process handles TypeScript compilation
 
 ### Deprecated
 _None_