review(#1627): one UPDATEFIELD, honest counts, safe field boxes, one-pass host redraw

- UPDATEFIELD stays the command main already had (Select objects, undo,
  locale strings); it now takes the PR's reach — a block reference's
  attributes and block definition, a table's cell texts — and reports
  the fields that really changed. The PR's second implementation and its
  duplicate registration are gone.
- FIELDEVAL's range error goes through the locale catalog.
- Field boxes: no slicing inside a character, one layout per multi-line
  attribute, and TEXT boxes scale about the annotative reference point
  like the glyphs do. Comment and indentation put back where they belong.
- bump_text_hosts classifies every host in one pass over the drawing
  instead of scanning all layouts and blocks per host.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/commands/mod.rs

@@ -709,7 +709,6 @@ inventory::submit!(crate::command::CommandRegistration {
         "UOSNAP",
         "FIELDDISPLAY",
         "FIELDEVAL",
-        "UPDATEFIELD",
         "PDFIMPORTMODE",
         "PDFIMPORTFILTER",
         "PDFIMPORTLAYERS",