Fix failure detection by switching from `except Exception` to checking
the return value, then back to `except Exception` once it was confirmed
that `bpy.ops` re-raises inside another operator. Identify the drawing
via the active scene camera (consistent with CreateDrawing) to avoid
the `ifc_definition_id=0` crash on non-drawing list entries.

Improve the binary search to test each candidate in isolation, enabling
multiple independent failures to be found in one pass. Suppress
drawing-generation log noise during tests and print a clean summary
with element id, type, and name.

Add a `should_export_isolated_file` operator property that extracts
the failing elements into a minimal standalone IFC file using
ExtractElements, making it easy to attach a reproduction case when
filing a bug report.

Generated with the assistance of an AI coding tool.

When a drawing fails to generate (e.g. an annotation with a runaway
coordinate that makes project_point_onto_camera return None), surface an
actionable error instead of a raw traceback, and make the search for the
offending element much faster.

drawing/operator.py:
- Wrap CreateDrawing.execute so any failure prints the full traceback
  (still consumed by debug_active_drawing) and reports a clear message
  pointing users at "Search Active Drawing For Failing Elements".
- Add should_generate_underlay/linework/annotation toggles so the
  generation stages can be run independently.

debug/operator.py:
- Detect which stage (underlay/linework/annotation) reproduces the
  failure and bisect with only that stage, skipping the expensive
  underlay render and OpenCASCADE linework on every iteration.
- Add a console spinner (background thread, writes to the real stdout)
  so long silent waits no longer look frozen.
- Include the GlobalId in element labels.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>