Start the UI copy and button consistency pass

Add the screen/copy/button inventory and canonical terminology, standardize
inspection/wand admit-refuse hints, name the review action Return to menu, and
move radio action/hold/status labels into the string table. Headless 250/250,
Python 97/97, docs check OK.

docs/README.md

@@ -12,6 +12,7 @@ This folder holds the project documentation, visual references and generated QA
 - [`asset-tooling.md`](asset-tooling.md) — image/model pipelines and screenshot gates
 - [`development-status.md`](development-status.md) — implemented features and current gaps
 - [`smoke-checklist.md`](smoke-checklist.md) — manual verification
+- [`ui-copy.md`](ui-copy.md) — screen, copy and button inventory
 - [`RELEASING.md`](RELEASING.md) — export, CI and publishing workflow
 - [`adr/README.md`](adr/README.md) — architecture decisions