fix: dual-mode VIP wedge visibility and snatched item disabling

[masonfox]

Summary

• Hide FL Wedge toggle for VIP torrents in dual-select mode — VIP torrents already have freeleech, so offering a wedge toggle was misleading. Applies to both desktop (DualSearchResultsList) and mobile (MobileBottomSheet) dual flows.
• Consolidate wedge visibility logic — Extracted wedge visibility into clear boolean variables (showBookWedge, showAudiobookWedge) and removed an unnecessary separator in the dual-mode header.
• Disable snatched items in dual-select flow — Previously, "Snatched Already" items could be selected and downloaded in the dual flow despite being disabled in the single flow. Now snatched items are visually muted (opacity-50, cursor-not-allowed), non-interactive (no click/keyboard handlers), and guarded at the handler level (handleSelectBook, handleSelectAudiobook, handleDualDownload).
• Bump to v2.5.3

Changes

File	Change
app/components/SearchResultItem.jsx	Block click/keyboard selection for snatched items in selectable mode; apply disabled styling
app/page.jsx	Guard dual-mode selection and download handlers against snatched items
app/components/DualSearchResultsList.jsx	Extract wedge visibility logic; exclude VIP and snatched items from wedge toggles; remove separator
app/components/MobileBottomSheet.jsx	Exclude VIP items from wedge toggles
app/components/DualDownloadButton.jsx	Removed (unused)
package.json	Bump version to 2.5.3

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[Copilot]

Pull request overview

This PR refines the dual-select (book + audiobook) flow by tightening FL wedge toggle visibility (especially for VIP torrents) and preventing selection/download of already-snatched items, aligning dual-mode behavior with single-mode behavior.

Changes:

• Hide FL wedge toggles for VIP torrents (desktop dual list + mobile bottom sheet) and consolidate wedge-visibility logic.
• Prevent snatched items from being selectable in dual-select UI, and add handler-level guards to block snatched selections/downloads.
• Remove unused DualDownloadButton component and bump version to 2.5.3.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
package.json	Version bump to 2.5.3.
app/page.jsx	Adds guards to prevent selecting/downloading snatched items in dual mode.
app/components/SearchResultItem.jsx	Blocks click/keyboard selection for snatched items and applies disabled styling in selectable mode.
app/components/DualSearchResultsList.jsx	Centralizes wedge visibility logic; hides wedges for VIP/snatched; simplifies header layout.
app/components/MobileBottomSheet.jsx	Hides wedge toggles for VIP torrents in dual flow on mobile.
app/components/DualDownloadButton.jsx	Removed unused component.

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