Extend Liquid Glass effect to FilterBar, FAB, and action toolbars

[kmch4n]

Summary

expo-glass-effect is currently only applied to the NativeTabs bar. Several other floating and overlay surfaces could share the same treatment to produce a cohesive Liquid Glass look throughout the UI.

Motivation

• Users see a translucent tab bar but opaque panels elsewhere — this inconsistency breaks the illusion of a single material.
• Overlay surfaces (toolbars, sticky filter bars, FABs) are exactly where Liquid Glass shines in Apple's own apps.

Proposal

Apply a glass-effect wrapper (GlassView or equivalent) to:

• FilterBar.tsx — sticky top filter on Home / Search
• FAB (floating plus button on Home)
• BulkActionToolbar.tsx — bottom toolbar during selection mode
• DiaryEditModal header bar
• Video detail bottom action bar (favorite / delete / share)
• GpsConfirmationDialog container

Notes

• The glass effect requires a non-solid background behind it to look correct — verify contrast and legibility on light/dark content scrolling under each overlay.
• iOS 26 is required for real Liquid Glass; older iOS falls back to a blur or translucent color — confirm the fallback is acceptable.
• Watch for performance: glass on a scrolling list is cheap, but glass over video playback or stacked glass layers can be expensive.

Acceptance criteria

• At least FilterBar, FAB, and BulkActionToolbar are wrapped in a glass-effect surface on iOS.
• Text and icons on top of glass remain legible against light and dark content.
• Android and Web fall back gracefully to the existing opaque styling.