Guard NotifyIcon.Text against 63-char Windows limit

[Copilot]

NotifyIcon.Text throws ArgumentException if assigned a string longer than 63 characters. The jiggling tooltip — which includes period, random-variation flag, mode, and distance — can easily exceed this limit, crashing the app on tray icon updates.

Changes

• MainForm.cs: Added MaxNotifyIconTextLength = 63 constant; truncates tooltip to 60 chars with ... when over the limit:

private const int MaxNotifyIconTextLength = 63;

// in UpdateNotificationAreaText:
var text = $"Jiggling mouse every {this.JigglePeriod} s,{rnd} mode: {mode} (Δ {this.JiggleDistance}).";
this.niTray.Text = text.Length > MaxNotifyIconTextLength
    ? text[..(MaxNotifyIconTextLength - 3)] + "..."
    : text;

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[Copilot]

Pull request overview

Guards WinForms tray tooltip updates against the Windows NotifyIcon.Text 63-character limit to prevent ArgumentException crashes during tray icon updates.

Changes:

• Introduced a MaxNotifyIconTextLength = 63 constant in MainForm.
• Truncates the dynamic “jiggling” tooltip text and appends ... when it would exceed the limit.

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