0.15.0

GTK frontend

• Document handling aligned with the GNOME HIG: .luma bundles open
  via a folder picker, dirty state tracks store commits with a title
  dot, Save (Ctrl+S) is wired, and closing prompts on unsaved
  changes.
• Open documents are restored on launch: whatever windows remain at
  exit come back next time, like gnome-text-editor. Entries whose
  files are gone are pruned.
• App icons re-rendered from icon-mac.svg (hicolor PNGs, snap icon,
  Windows .ico) to match the coral L SwiftUI icon.
• REPL session boundary centers its label between two rules and reads
  "New process attached at ", matching the SwiftUI frontend.
• Banner layout no longer stretches the divider or floats the icon
  for wrapped, multi-line messages.

Agent

• Thread registers read via toJSON() — register fields are
  non-enumerable accessors, so Object.entries returned nothing.
• Single-thread lookups use findThreadById instead of enumerating
  every thread.

Dependencies

• frida-core / frida-swift bumped; @types/frida-gum to 19.7.0.