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>

.gitignore

@@ -0,0 +1,50 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+.venv/
+ENV/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual Environment
+.venv/
+venv/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Output files
+*.stl
+*.3mf
+*_output*
+logo_output*
+
+# Temporary files
+*.tmp
+*.log