feat: Week 1 complete - Linux support + IPC API prep

🎉 Major v2.0 rebuild kickoff - Week 1 accomplished!

## Highlights

### Cross-Platform Support 🌍
- ✅ Linux primary platform (Ubuntu/Debian tested)
- ✅ Windows fully supported
- ✅ macOS experimental support
- ✅ Platform-agnostic path handling (XDG spec)
- ✅ Auto-detection of KiCAD installation

### Infrastructure 🏗️
- ✅ GitHub Actions CI/CD pipeline
- ✅ Pytest framework with 20+ tests
- ✅ Pre-commit hooks (Black, MyPy, ESLint)
- ✅ Automated Linux installation script
- ✅ Enhanced npm scripts

### IPC API Migration Prep 🚀
- ✅ Comprehensive migration plan (30 pages)
- ✅ Backend abstraction layer (800+ lines)
- ✅ Factory pattern with auto-detection
- ✅ SWIG backward compatibility wrapper
- ✅ IPC backend skeleton ready

### Documentation 📚
- ✅ Updated README (Linux installation)
- ✅ CONTRIBUTING.md guide
- ✅ Linux compatibility audit
- ✅ IPC API migration plan
- ✅ Session summaries
- ✅ Platform-specific config templates

## Files Changed

- 27 files created
- ~3,000 lines of code/docs
- 8 comprehensive documentation pages
- 20+ unit tests
- 5 abstraction layer modules

## Next Steps

- Week 2: IPC API migration (project.py → component.py → routing.py)
- Migrate from deprecated SWIG to official IPC API
- JLCPCB/Digikey integration prep

🤖 Generated with Claude Code
https://claude.com/claude-code

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

pytest.ini

@@ -0,0 +1,52 @@
+[pytest]
+# Pytest configuration for KiCAD MCP Server
+
+# Test discovery patterns
+python_files = test_*.py *_test.py
+python_classes = Test*
+python_functions = test_*
+
+# Test paths
+testpaths = tests python/tests
+
+# Minimum Python version
+minversion = 6.0
+
+# Additional options
+addopts =
+    -ra
+    --strict-markers
+    --strict-config
+    --showlocals
+    --tb=short
+    --cov=python
+    --cov-report=term-missing
+    --cov-report=html
+    --cov-report=xml
+    --cov-branch
+
+# Markers for organizing tests
+markers =
+    unit: Unit tests (fast, no external dependencies)
+    integration: Integration tests (requires KiCAD)
+    slow: Slow-running tests
+    linux: Linux-specific tests
+    windows: Windows-specific tests
+    macos: macOS-specific tests
+
+# Ignore patterns
+norecursedirs = .git .tox dist build *.egg node_modules
+
+# Coverage settings
+[coverage:run]
+source = python
+omit =
+    */tests/*
+    */test_*.py
+    */__pycache__/*
+    */site-packages/*
+
+[coverage:report]
+precision = 2
+show_missing = True
+skip_covered = False