Merge pull request #1423 from felixriestra:pr/python-host-model

The bundled `opencad.python` plugin drives OCS through plugin API v7: all
43 canvas entity kinds, the drawing tables, and OCS's own commands run
step by step. RustPython stays in the plugin process — the plugin crate is
outside the workspace with its own lock file, so the application's own
dependencies are unchanged.

Reconciled with the plugin command work that landed as #1425, which the
branch was written before:

- Both added `impl Drop for PluginProcessInteractiveAdapter`, which git
  merges silently into two impls that do not compile. One body now
  cancels the command and then drops it from the runner, in that order: a
  plugin waiting on a step has to be released before the runner forgets
  the command.
- `execute_command` (#1425) and `run_command` (#1423) are both routes from
  a script to the command line, and only the second was guarded. The
  SCRIPTCOMMANDS switch and the denylist are shared now, so neither route
  is the unguarded one.
- `run_command` dispatched with plugin dispatch still enabled, so a script
  naming a plugin command re-entered the plugin that was blocked waiting
  for it. It sets the suppression flag for the length of the dispatch, as
  `execute_command` does.

The denylist read the command as typed, while the dispatcher resolves
aliases: a user-defined `Q` for `QUIT` (ALIASEDIT writes those) walked
past it. It resolves the alias first.

Also: the active-command comparison ran on every message, a mouse move
included, allocating two strings for names that are already `&'static
str`; SCRIPTCOMMANDS' own messages go through the translation macros; and
`docs/.DS_Store` (now ignored) and an unrelated RTF note about constraint
commands are out of the tree.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/entities/dimension.rs

@@ -25,6 +25,14 @@ pub(crate) fn set_dimension_text_override(base: &mut DimensionBase, text: Option
     base.user_text = text;
 }
 
+/// Recompute the fields a script cannot set: the base definition point and
+/// the stored measurement, exactly as grip edits do.
+pub(crate) fn normalize_scripted_dimension(dim: &mut Dimension) {
+    let definition_point = dimension_definition_point(dim);
+    dim.base_mut().definition_point = definition_point;
+    dim.base_mut().actual_measurement = dim.measurement();
+}
+
 fn dimension_definition_point(dim: &Dimension) -> acadrust::types::Vector3 {
     match dim {
         Dimension::Aligned(d) => d.definition_point,