Feature/test infra

[Ralph-20]

Windows Installation Fix: Cython Compilation Verification

Problem

Windows users getting ImportError: cannot import name 'cython_functions' because Cython extensions weren't compiled during installation. No clear guidance when compilation failed.

Solution

Added verification script and comprehensive troubleshooting documentation.

Changes

New Files

• scripts/verify_installation.py - Detects missing Cython extensions, provides platform-specific fixes
• docs/windows-setup.md - Complete Windows troubleshooting guide with two solutions (conda tools vs Visual Studio)

Updated Files

• README.md - Added verification step to Quick Start, Windows troubleshooting section
• docs/getting-started.md - Enhanced setup instructions, added Cython compilation guidance

Usage

Verify installation:

python scripts/verify_installation.py

Quick fix for Windows Cython errors:

conda install -c conda-forge m2w64-toolchain libpython
pip install -e . --no-deps --force-reinstall

Impact

• ✅ Zero risk - No changes to environment.yml or CI/CD
• ✅ Self-service troubleshooting for Windows users
• ✅ Clear detection of installation issues
• ✅ Platform-specific guidance (Windows/Mac/Linux)

Testing

• ✅ Verification script tested on macOS (all checks pass)
• ✅ No linter errors
• ✅ Documentation links verified