fix(trayicon): re-apply tooltip after show() to fix empty tooltip on Windows 11

[TimeToBuildBob]

Summary

• Re-applies the tooltip text after trayIcon.show() to ensure the Windows system tray backend registers it
• On Windows 11, tooltips set before show() may not be picked up, resulting in an empty tooltip on hover
• The fix is a no-op on platforms where the tooltip already works correctly

Test plan

• Hover over the ActivityWatch tray icon on Windows 11 and verify the tooltip shows "ActivityWatch"
• Verify no regression on macOS and Linux

Fixes #112

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Important

Re-applies tooltip after trayIcon.show() in trayicon.py to fix empty tooltip issue on Windows 11.

• Behavior:
  • Re-applies tooltip in run() in trayicon.py after trayIcon.show() to fix empty tooltip issue on Windows 11.
  • No-op on macOS and Linux.
• Test Plan:
  • Verify tooltip shows on Windows 11.
  • Ensure no regression on macOS and Linux.

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[ellipsis-dev]

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[greptile-apps]

Greptile Summary

Re-applies the tooltip text after trayIcon.show() to fix an empty tooltip issue on Windows 11. The tooltip is initially set in the TrayIcon.__init__ constructor, but Windows 11's system tray backend may not register tooltips set before the icon is visible. The fix calls setToolTip(toolTip()) immediately after show(), which is a no-op on platforms where tooltips already work correctly (macOS and Linux).

• Simple, targeted workaround for a Windows 11-specific Qt issue
• Well-documented with clear comments and issue reference
• No impact on other platforms

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The change is a minimal, well-documented workaround for a platform-specific issue. It re-applies an already-set tooltip value, making it a safe no-op on unaffected platforms. The fix is focused, includes clear comments with an issue reference, and has no risk of introducing bugs.
• No files require special attention

Important Files Changed

Filename	Overview
aw_qt/trayicon.py	Re-applies tooltip after trayIcon.show() to fix Windows 11 empty tooltip issue - minimal, well-documented fix

_{Last reviewed commit: abde3d2}

[greptile-apps]

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[ErikBjare]

@TimeToBuildBob merging this, fix the CI issues in separate follow-up PR.