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jack
da0474680c
Critical performance fix for UI freezes when receiving media: Problem: mediaAttachment(for:) was called during every SwiftUI render, performing synchronous disk I/O on main thread: - FileManager.fileExists() called 2-6x per message (checking subdirs) - applicationFilesDirectory() creating directories on every call - With multiple media messages, this meant 20-100+ disk ops per render Solution: 1. Remove fileExists checks - construct URLs directly - Files are validated during playback/display (fail gracefully if missing) - Sender determines subdirectory (outgoing vs incoming) 2. Cache applicationFilesDirectory() result - Static cache prevents repeated FileManager.url() calls - Directory created only once 3. Remove redundant playback.replaceURL() in VoiceNoteView.onAppear - Controller already initialized with correct URL This eliminates ALL disk I/O from the view rendering hot path.