The first window opens at 1440 x 900 when the screen has room for it around a
taskbar or Dock, and maximized (with a size that fits once un-maximized)
when it doesn't, as on 1600 x 900, 1366 x 768 or 150% scaled 1080p screens.
The window's size, position and maximized state are saved with the UI
preferences (UiState::window) and restored at the next launch, moved fully
onto a monitor that is still connected and maximized if it no longer fits.
Root cause: main.rs created the window at a fixed 1440 x 900 at the system's
default position, never checked it against the monitor and never remembered
it. The new apps/vectorcraft/src/window.rs places the still-hidden window
from the monitors winit reports (CreationContext::winit_window) and tracks
its geometry every frame.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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