Use the access-inspection mockup behind the inspection panel

Add the access_inspection art layer to the HUD, keep the panel transparent and
padded, center the title/status/issue text and artifact cards, and hide the art
with the panel. Also record the pop-up visual pass as done. Headless 226/226
verified in a clean HEAD worktree.

TODO.md

@@ -54,7 +54,7 @@
 
 ## Improve in-game pop-ups
 
-- [ ] Improve the visual appearance of in-game pop-ups (layout, button style, palette, icons, and text styling).
+- [x] Improve the visual appearance of in-game pop-ups (start/pause/settings/review/radio/wand/inspection art, buttons, palette, icons, text).
 
 ## Realism follow-ups (v0.6.1 candidates)