* fix: macOS 26.3 ImageIO SIGBUS crash fixes
All crashes share the same root cause: a corrupt function pointer in
macOS 26.3's ImageIO PNG decoder (EXC_BAD_ACCESS SIGBUS at 0x0bad4007).
Fixes:
- Replace emoji and non-ASCII characters in UI strings that trigger
the broken PNG decoder via AppKit's text rendering pipeline
- Replace all NSAlert usage with NSPanel to avoid the crash when
NSAlert loads a NIB containing an NSImageView that triggers
IconServices -> ImageIO -> PNGReadPlugin
- Replace requireConnection() NSAlert in VPhoneKeyHelper with a print
statement to prevent crash on home gesture before vphoned connects
- Switch screenshot output format from PNG to JPEG to avoid the crash
in CGImageDestinationFinalize -> PNGWritePlugin
* fix: additional macOS 26.3 ImageIO SIGBUS crash fixes
- Fix copyScreenshotToPasteboard crash by writing JPEG data directly
to pasteboard instead of using NSImage writeObjects which internally
triggers the broken TIFF encoder
- Replace requireConnection() print statement with NSPanel to properly
notify user when key injection is attempted before VM connects
* fix: additional macOS 26.3 ImageIO SIGBUS crash fixes
- Fix copyScreenshotToPasteboard crash by writing JPEG data directly
to pasteboard instead of using NSImage writeObjects which internally
triggers the broken TIFF encoder
- Replace requireConnection() print statement with NSPanel to properly
notify user when key injection is attempted before VM connects
