Feat : Enhance Pomodoro Timer App with Task Management Feature

### Project slug (e.g., snake, todo)

pomodoro

### Summary

Add a task panel beside or below the timer.

Use React state management (useState/useReducer) for local task data.

Optional: integrate statistics showing how many pomodoros were spent per task.

### Details / Acceptance criteria

Users can add tasks with a name and optional description.

Users can edit or delete tasks.

Users can link tasks to pomodoro sessions (e.g., “Working on Task A”).

Tasks persist using local storage (or backend API if available).

UI remains clean and minimal, aligned with current app design.

### Scope

- [ ] UI changes
- [ ] Logic changes
- [ ] Accessibility
- [ ] Tests (manual)