fix: Fix UI bottom not working

[DaLaw2]

No description provided.

[Copilot]

Pull Request Overview

This PR implements UI functionality for managing backup schedules and improves system shutdown handling. The main purpose is to fix the "UI bottom not working" issue by adding edit and run functionality to the schedule management interface.

• Added complete schedule editing functionality with a dedicated dialog
• Implemented "Run Now" feature for executing schedules immediately
• Enhanced system shutdown process with proper resource cleanup

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/ui/schedule_page.rs	Major addition of schedule editing UI with dialog, form handling, and run-now functionality
src/ui/execution_page.rs	Fixed execution display update logic to always create new display objects
src/model/core/schedule/schedule.rs	Changed execution UUID generation to create unique IDs instead of reusing schedule UUID
src/core/system.rs	Added proper shutdown sequence and stored manager references for cleanup
src/core/infrastructure/database_manager.rs	Added shutdown method with database pool closure and lock release
src/core/infrastructure/communication_manager.rs	Added handler cleanup method for proper shutdown
src/core/infrastructure/io_manager.rs	Converted Drop trait to explicit shutdown method
src/utils/database_lock.rs	Added manual lock release method
src/core/backup/backup_engine.rs	Added missing event type registrations for UI communication
config.toml	Added channel capacity configuration
Cargo.toml	Updated dependency versions to newer releases

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}