Improve debug mode animation and add simulator connection checks

[llamavert]

Summary

Adds smooth fade-in/fade-out animations to the debug mode indicator and implements simulator connection checks to ensure debug mode can only be activated when a simulator is connected.

Changes Made

• Added smooth fade-in/fade-out animations to the debug mode indicator with opacity and scale transforms
• Implemented text caching mechanism (_debugModeTextCache) to prevent text from clearing during exit animation
• Modified UpdateDebugModeText() to only update when debug mode is active, avoiding text flash during fade-out
• Added guard in ToggleDebugMode() to prevent activation when simulator is disconnected
• Modified SimulatorConnected setter to auto-disable debug mode when simulator disconnects
• Adjusted warning icon vertical alignment (Margin="0,-2,8,0")
• Adjusted timing: 200ms fade-in, 150ms fade-out with proper easing functions

Additional Information

Author Information

Discord Username:
VATSIM CID:

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Checklist:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

[greptile-apps]

Greptile Overview

Greptile Summary

Enhanced the debug mode indicator with smooth fade-in/fade-out animations and implemented simulator connection checks to ensure debug mode can only be activated when a simulator is connected.

Key Changes

• Added smooth animation system with opacity (0→1) and scale transforms (0.9→1) using CubicEase easing functions
• Implemented text caching (_debugModeTextCache) to prevent text from clearing during exit animation
• Modified UpdateDebugModeText() to only update when debug mode is active, avoiding text flash during fade-out
• Added guard in ToggleDebugMode() to prevent activation when SimulatorConnected is false
• Auto-disables debug mode when simulator disconnects via SimulatorConnected setter
• Updated debug mode text format to "Debug Mode — State: {_debugStateId}" (removed toggle instruction)

Animation Details

• Fade-in: 200ms duration with EaseOut for smooth appearance
• Fade-out: 150ms duration with EaseIn for quick dismissal
• Visibility changes properly synchronized with animation keyframes

Confidence Score: 5/5

• This PR is safe to merge with no issues identified
• The changes are well-implemented with proper animation timing, correct state management, and appropriate guards for simulator connection. The text caching mechanism elegantly solves the animation flash issue, and the auto-disable on disconnect prevents invalid states.
• No files require special attention

Important Files Changed

Filename	Overview
MainWindow.xaml	Added smooth fade-in/fade-out animations to debug mode indicator with opacity and scale transforms, adjusted timing to 200ms fade-in and 150ms fade-out with proper easing functions
Presentation/ViewModels/MainWindowViewModel.cs	Implemented text caching mechanism to prevent text clearing during exit animation, added simulator connection guards to prevent debug mode activation when disconnected, auto-disables debug mode on simulator disconnect