Two near-identical match-on-EntityType tables lived far apart:
scene/properties.rs::entity_type_name returned mixed-case UI labels;
app/commands.rs::entity_type_name returned uppercase DXF record names.
Both enumerated ~30 variants; adding a new entity meant remembering to
touch two files in two crates' worth of source layout.
Move both into a single entities/names.rs as `ui_name()` and
`dxf_name()`. Adjacent so a new variant gets both labels added at once;
function names make the intended audience explicit at the callsite.
scene/properties.rs and app/commands.rs each lose their local match
plus one re-export, gaining a `crate::entities::names::*` call.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Make scene::properties::entity_type_name the single source of truth.
entity_type_label in helpers.rs now delegates to it instead of
maintaining a separate match list.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Expanded entity_type_name() to cover all EntityType variants from acadrust
instead of falling back to the generic "Entity" label.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
