Add option to hide controls toolbar via tray menu

[Copilot]

Implements toggleable visibility for the control toolbar. Users can hide the toolbar for a cleaner look and restore it using the tray menu.

Changes

• Tray menu: Added "Hide/Show Controls" item with dynamic text reflecting current state
• State preservation: Visibility state maintained across window recreation (monitor switches, resolution changes)
• Help updates: Updated help dialog and README to reflect tray menu access

Implementation

// State tracking
private bool isControlWindowVisible = true;
private ToolStripMenuItem? toggleControlsMenuItem;

// Toggle method
public void ToggleControlsVisibility()
{
    isControlWindowVisible = !isControlWindowVisible;
    
    if (controlWindow != null)
    {
        if (isControlWindowVisible)
            controlWindow.Show();
        else
            controlWindow.Hide();
    }
    
    UpdateTrayMenuToggleControlsText();
}

// Respect state when creating control window
private void CreateControlWindow()
{
    controlWindow = new ControlWindow(this);
    RepositionControlWindow();
    
    if (isControlWindowVisible)
        controlWindow.Show();
}

Menu item stores direct reference for O(1) text updates. Users access the feature by right-clicking the tray icon and selecting "Hide Controls" or "Show Controls".

<issue_title>Feature request: Option to hide controls toolbar</issue_title>
><issue_description></issue_description>
>
><agent_instructions>Suggest a few UI ways to do this? If the toolbar is gone, would you get it back from the tray again? what's a good way to do this without adding another button?</agent_instructions>
>
> ## Comments on the Issue (you are @copilot in this section)
>
>
>
>

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Feature request: Option to hide controls toolbar</issue_title>
<issue_description></issue_description>

<agent_instructions>Suggest a few UI ways to do this? If the toolbar is gone, would you get it back from the tray again? what's a good way to do this without adding another button?</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Feature request: Option to hide controls toolbar #12

---

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[shanselman]

✅ Successfully merged master into this branch to integrate with all latest features:

• GitVersion for automatic semantic versioning
• Color temperature controls (🔥 warmer, ❄️ cooler)
• All monitors mode
• Cursor ring hover effect
• Single instance enforcement

The hide/show controls feature now works seamlessly with all current functionality. Ready for final review and merge!

[shanselman]

let's not have a global hotkey @copilot, we don't need one. Let's do the hide and show with the tray icon

[Copilot]

let's not have a global hotkey @copilot, we don't need one. Let's do the hide and show with the tray icon

Removed the global hotkey. The hide/show controls feature now works only through the tray icon (right-click → "Hide Controls" / "Show Controls").

Changes in commit 1e06ae3:

• Removed HOTKEY_TOGGLE_CONTROLS constant and registration
• Removed VK_C constant
• Removed hotkey handler from HwndHook
• Updated tray menu item to not show hotkey text
• Removed hotkey from help dialog
• Updated README to reflect tray-only access

The ToggleControlsVisibility() method and state tracking remain fully functional via the tray menu.