299 Tools v1.2.1
299 MODEL WORKS
Target: Blender 5.2.1 LTS, macOS Apple Silicon

INSTALL
Preferences > Add-ons > Install from Disk...
Select 299_Tools_v1.2.1.zip without extracting it, then enable 299 Tools.
This replaces the same addon_299_tools_7set package. Restart Blender after
updating an enabled older version so cached Python modules are reloaded.
Do not enable separate standalone copies of the same included tools together.

299 Tools > Process | Freehand Cut (加工｜手書き切断)
- Outline Cut & Delete (囲んで切断・消去)
- Line Split & Separate (線で分割・別パーツ化)
1. Select a mesh in Object Mode and frame it with space around it.
2. Through ON extends the cut through surfaces hidden from view; OFF detaches only visible surface faces.
3. Start Line Split and Separate. Drag LMB from outside, across the model, to outside.
   Click LMB to place points; a red preview segment follows the cursor toward the next point.
   Drag LMB for freehand. Backspace removes the last point.
   The viewport is locked during drawing. Esc/right-click cancels drawing.
4. Enter previews the boundary in Edit Mode. Orange faces become a new part.
   Rotate the view to inspect. Do not edit the mesh while previewing.
5. Confirm and Separate into Two Parts, Redraw Line, or Cancel and Restore.

NOTES / LIMITS
- Cut boundaries remain open. No automatic caps or watertight-print guarantee.
- Through OFF is a surface patch separation, not a bisection of the solid.
- Exactly two objects are produced; either object can contain disconnected islands.
- Self-crossing/retraced strokes and endpoints touching the model are rejected.
- For deep concavities/holes, extend endpoints farther into unobstructed space.
- Enabled viewport modifiers must be applied/disabled. Shape keys are unsupported.
- Reveal hidden faces first. Use local, editable meshes; zero scale is rejected.
- Preview uses a separate mesh. Cancel restores the original mesh, including
  shared data users. Confirm ignores selection changes and refuses geometry edits.
- Both methods share the Freehand Cut panel; the seven-tool structure is unchanged.
- Outline Cut & Delete includes advanced settings at the bottom of the panel.
- Blender 5.2.1 LTS is the minimum declared version for this release.

INCLUDED TOOLS
Size from Head Proportion / Simple Pose Helper / Auto Segment / Surface Bridge /
Freehand Cut (Outline Cut & Delete / Line Split & Separate) / Backface Check / Clearance Boolean
The package keeps the original seven internal tool modules and installation ID.

VERIFICATION FOR v1.2.1
Interactive operation has been verified on Blender 5.2.1 LTS / Mac.
Windows and Linux have not been tested on actual hardware.

CHANGES IN v1.2.1
- Kept both cut methods in the single Freehand Cut panel.
- Simplified Outline Cut instructions and moved smoothing/advanced controls to the bottom.
- Require a selected mesh in Object Mode before either drawing tool can start.
- Suppress the Object Mode warning during the intentional Edit Mode preview state.
- Unified drawing input: click places straight-line points, drag draws freehand; Line Split now shows a live rubber-band preview to the mouse.
- Explicitly reload nested Freehand Cut modules when the suite is reloaded.
- Cutting, preview, separation, cancellation and geometry algorithms are otherwise unchanged.
