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 <[email protected]>

src/ui/window/plugin_manager.rs

@@ -309,11 +309,19 @@ fn external_card<'a>(
         actions = actions.push(toggle_button(&p.id, disabled));
         actions = actions.push(Space::new().width(6));
     }
-    actions = actions.push(pill_button(
-        t!("Uninstall"),
-        Message::PluginUninstall(p.id.clone()),
-        button::danger,
-    ));
+    if p.bundled {
+        actions = actions.push(
+            text(t!("Bundled with Open CAD Studio"))
+                .size(11)
+                .style(muted_style),
+        );
+    } else {
+        actions = actions.push(pill_button(
+            t!("Uninstall"),
+            Message::PluginUninstall(p.id.clone()),
+            button::danger,
+        ));
+    }
 
     container(column![info, actions].spacing(8).padding([10, 12]))
         .width(Fill)