Add icon float-in animation when Launchpad unhides

[Copilot]

Implements a smooth float-in/zoom-in animation for icons when Launchpad becomes active or unhides.

Animation Effect

• Icons start invisible, scaled to 50%, offset 40pt down
• Spring animation brings them to full size and position
• Staggered 20ms delay per icon creates a cascading wave effect

Changes

LaunchpadConstants.swift

• floatInAnimation: Spring animation (response: 0.5s, damping: 0.7)
• floatInInitialScale, floatInInitialOffset, floatInStaggerDelay, floatInInitialDelay

PagedGridView.swift

• Added isAppearing state and triggerFloatInAnimation() helper
• Triggered on initial appear and app reactivation via handleAppActivation()

SinglePageView.swift

• Accepts isAppearing parameter
• Applies animated opacity, scale, and offset modifiers with staggered delays

.opacity(itemOpacity())
.scaleEffect(isAppearing ? 1 : LaunchpadConstants.floatInInitialScale)
.offset(y: isAppearing ? 0 : LaunchpadConstants.floatInInitialOffset)
.animation(LaunchpadConstants.floatInAnimation.delay(staggerDelay), value: isAppearing)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add icon float in animation when Launchpad unhides</issue_title>
<issue_description>When Launchpad becomes active show a smooth animations that make the icons float in / zoom in from distant.</issue_description>

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

• Fixes Add icon float in animation when Launchpad unhides #91

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[WaikikiGovernment]

@copilot show animation not only when launching, but when unhide/activate too.

[Copilot]

@copilot show animation not only when launching, but when unhide/activate too.

The animation is already triggered on both launch and unhide/activate. The handleAppActivation() function at line 408 calls triggerFloatInAnimation() and is invoked whenever the app becomes active via the NSWorkspace.didActivateApplicationNotification observer (line 175-180). This notification fires when the app is unhidden or reactivated.

Current animation triggers:

• Initial launch: .onAppear (line 88-91)
• Unhide/Reactivate: didActivateApplicationNotification → handleAppActivation() → triggerFloatInAnimation() (lines 175-180, 408-421)