feat(gui): scaffold egui window behind the gui feature

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Adds the opt-in graphical front-end (pixelpass --gui), default-off via the
`gui` cargo feature so the headless build never pulls the toolkit tree.
eframe 0.34 on the glow/OpenGL backend (no wgpu); 69 feature-gated crates,
vetted. --gui on a headless build errors with a rebuild hint.

This commit is just the shell: a window with a Host/View menu and back
navigation. The shell-out child-spawning + JSON event parsing that drives
real host/viewer controls come next. Window verified to open and render
cleanly on Wayland (glow).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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Mollusk

2026-05-24 16:26:56 -04:00

parent e7ded10db8

commit 6f0fd088f6

5 changed files with 1805 additions and 67 deletions

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