CTS Building Builder Pro v1.0.0 — Final Release

This final release retains the existing Building Builder Pro tools and
properties, including the improvements in the previous development builds.
Extension Manager, the main interface and About show version 1.0.0.

Vertical grooves on curved walls
- Number of Grooves applies once across the selected connected curved surface.
- Equal Divide by Count uses the complete developed curve length, independent
  of the number of small faces used to draw the curve in SketchUp.
- By Clear Gap and Start From use the same continuous length.
- Groove profiles are joined at face seams, including grooves wider than one
  facet. The result reports logical grooves rather than face fragments.
- Horizontal wall grooves, XY surfaces, selected-line grooving and native
  Undo/Redo display retain their existing workflows.

Selected-line grooves on XY surfaces
- Select existing lines or curves on horizontal slab/ceiling faces, including
  faces inside groups/components and external guide lines near the surface.
- The existing selected-line engine uses its complete face-plane coordinates.
  Depth follows the surface normal instead of using world Z as a surface axis.
- Selected Portion, Extend to Wall Edges, Extra Length, Inside/Outside Width,
  parallel layout, spacing and count retain their existing properties.
- Holes, connected curves and instance transformations retain the same logic.
- Vertical/curved-wall groove workflows remain available.

Native Undo/Redo display
- Native model transaction events request a repaint after Undo or Redo.
- Viewport keyboard shortcuts and Edit menu actions receive the same redraw
  handling as history commands sent from the plugin dialogs.
- Display updates never add a geometry operation, change the camera, or rebuild
  the wall. Undo/Redo continues to use SketchUp's native model history.
- One-shot repaint requests are coalesced and do not install a repeating timer.

Installation
Install the RBZ in Extension Manager and restart SketchUp. Confirm v1.0.0 is
shown in the main interface before checking the updated workflow.

Validation
Automated geometry-math, host-selection, transaction-boundary, callback and
rendered-interface checks pass. Native SketchUp geometry and graphics still
require verification in SketchUp on the target model.
