Fix SVG to STL conversion for multi-color 3D printing

Split green features into separate non-overlapping parts to fix slicing issues.

Key changes:
- Split green mask into icon (top) and text (bottom) using white text as separator
- Create 4 separate parts: base, green_icon, white_text, green_text
- Parts positioned at same Z height but don't overlap in XY space
- Assembly structure matches nameplate.3mf (components with identity transforms)
- Fixed polygon detection: reduced min_size, added preserve_topology
- Added mesh repair logic to ensure watertight meshes
- Updated material maps for new part names

Files:
- svg_logo_to_stl.py: Main conversion script with green split logic
- Color logo - no background.svg: Source SVG file
- command.txt: Usage documentation with working parameters
- requirements.txt: Python dependencies
- .gitignore: Exclude output files and debug images

Minimum scale: 254mm width for 0.4mm nozzle (smaller features too thin to print)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

requirements.txt

@@ -0,0 +1,20 @@
+cairocffi==1.7.1
+CairoSVG==2.9.0
+cffi==2.0.0
+cssselect2==0.9.0
+defusedxml==0.7.1
+ImageIO==2.37.3
+lazy-loader==0.5
+mapbox_earcut==2.0.0
+networkx==3.4.2
+numpy==2.2.6
+packaging==26.2
+pillow==12.2.0
+pycparser==3.0
+scikit-image==0.25.2
+scipy==1.15.3
+shapely==2.1.2
+tifffile==2025.5.10
+tinycss2==1.5.1
+trimesh==4.12.2
+webencodings==0.5.1