### 🚀 Features

- *(core)* Implement layered calendars, disabled state, and robust tui visibility toggles

### 🐛 Bug Fixes

- *(gui)* Add close button to error banner and clear on success
- *(sync)* Implement safe conflict resolution (copy on 412), atomic file writes, and atomic move operations
- *(gui)* Preserve active calendar on refresh, always inject local calendar, and show duration metadata for untagged tasks
- *(model)* Treat no priority as implied normal priority (5) for sorting

### 🚜 Refactor

- *(sync)* Implement CTag caching, optimize fetch, and fix journal atomicity bugs

### ⚡ Performance

- *(net)* Constrain concurrent calendar fetches to 4 to prevent server overload
- *(core)* Implement bounded concurrency and delta sync for task fetching

### ⚙️ Miscellaneous Tasks

- Add licenses
- Lint
- *(release)* Update changelog
- Release cfait version 0.2.3