docs: refine changelog based on review feedback

Author: VariableThe

CHANGELOG.md

@@ -7,16 +7,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [v0.5.0-beta] - 2026-06-23
 
+### Highlights
+- 🚀 Migrated from Electron to Tauri
+- ⚡ Automatic updates
+- 🪟 Improved window behavior
+- 🐞 Major stability improvements
+
 ### Added
 - **Auto-Updates**: The app now checks for updates silently in the background on startup. A "Check for Updates Now" button was also added to the Settings menu.
 
 ### Changed
+- **Tauri Migration**: PaperCache has been fully migrated from Electron to Tauri, reducing memory usage, startup time, and application size while preserving existing workflows.
 - The macOS distribution format is now `.tar.gz` and `.app` to circumvent strict macOS 14 runner restrictions with `osascript`. The Homebrew Cask automation pulls the `.tar.gz` bundle.
 
 ### Fixed
 - Addressed multiple edge-cases with `CodeMirror` state overwrites causing typed text to disappear or duplicate.
 - Fixed a bug where entering an empty string for the OpenAI API Key would incorrectly register as a valid key. The system now safely deletes the credentials.
-- Standardized window show/hide toggling and ensured `Esc` correctly closes popovers.
+- Improved window behavior and consistency across Windows, macOS, and Linux.
 - The `Quit` action now gracefully emits the proper shutdown events rather than force-killing the process, preventing data loss.
 
 ### Performance
@@ -27,6 +34,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [v0.4.0] - 2026-06-22
 
+### Highlights
+- ⌨️ Global Shortcut Recorder
+- ✅ Tasks Integration
+- 🧠 State Management Refactor
+- 🏎️ MathJS Optimization
+
 ### Added
 - **Global Shortcut Recorder**: Added a UI in Settings to record custom keybindings for toggling the app and creating new notes.
 - **Tasks Integration**: Support for inline checkboxes and a dedicated Tasks view.
@@ -43,7 +56,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed the Settings window so that it properly tracks the bounds of the main window.
 
 ### Performance
-- **MathJS Optimization**: Implemented dynamic lazy-loading for the heavy `mathjs` dependency and debounced mathematical evaluations, significantly lowering baseline CPU usage.
+- **MathJS Optimization**: Implemented dynamic lazy-loading and debounced evaluations, dramatically reducing idle CPU usage and startup overhead.
 - Fixed a memory leak involving power state IPC listeners that drained battery on macOS.
 
 ### Security
@@ -54,6 +67,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [v0.2.0] - 2026-06-20
 
+### Highlights
+- 🧮 Core mathematical evaluation logic
+- 📏 Horizontal rules and styling
+
 ### Added
 - Implemented core mathematical evaluation logic and inline widgets.
 - Added horizontal rules (`---`) styling and custom colors for math results.
@@ -69,7 +86,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [v0.1.0] - 2026-05-31
 
+### Highlights
+- 🎉 Initial Release of PaperCache!
+
 ### Added
-- **Initial Release**: PaperCache is born!
-- System tray integration, auto-hide on blur, and global toggle capabilities.
-- Markdown parsing, live variable tracking, and secure key storage.
+- **Initial Release** of PaperCache.
+- Global hotkey launcher with floating markdown editor.
+- Live markdown rendering with inline math and variables.
+- System tray integration.
+- Auto-hide on blur.
+- Cross-platform desktop support.