Use the radio and wand mockups behind their forms

Draw radio_report/emergency_radio behind a transparent, padded form and switch
the backdrop with the call type. The wand HUD popup now shows wand_screening
behind its text while open. Both covers use the mockup panel bounds so baked-in
controls stay hidden. Headless 226/226 verified in a clean HEAD worktree.

TODO.md

@@ -49,14 +49,16 @@ and scene visuals with those mockups — verified with
 - [x] Wire the pause overlay to `pause_overlay` scene art (backdrop + opaque panel cover).
 - [x] Wire the settings panel to `settings_panel` art.
 - [x] Wire the shift-review screen to `shift_review` art (backdrop + opaque panel cover).
-- [ ] Wire the radial menu and HUD chrome to their reference images.
+- [x] Wire the wand popup to `wand_screening` art.
+- [ ] Wire the radial menu and remaining HUD chrome to their reference images.
 
 ### Align in-game visuals
 
 - [x] Make the venue selection screen match the `start_menu` mockup (layout, palette, background).
 - [ ] Make the HUD match the `targeting_npc` / `escalation_hud` mockups (focus ring, escalation meter, log, hints).
 - [x] Align the pause, settings, and shift-review panels to their mockups.
-- [ ] Align the radio, wand, and timeline panels to their mockups.
+- [x] Align the radio and wand panels to their mockups.
+- [ ] Align the body-camera timeline to its mockup.
 - [ ] Align scene lighting, fog, and post-processing for `venue_overview` and `late_night_avenue`.
 
 ### Verify against the mockups