Initialize project structure with foundational files including .gitignore, README, and specification templates. Establish project constitution outlining core principles for code quality, testing, user experience, and performance. Add initial feature specification for Reference Board Viewer application.

.gitignore

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+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+.pytest_cache/
+.coverage
+htmlcov/
+.tox/
+.hypothesis/
+
+# Virtual environments
+venv/
+ENV/
+env/
+.venv
+
+# IDEs
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Nix
+result
+result-*
+
+# Project specific
+.specify/plans/*
+.specify/specs/*
+.specify/tasks/*
+!.specify/plans/.gitkeep
+!.specify/specs/.gitkeep
+!.specify/tasks/.gitkeep
+
+# Keep template and memory directories
+!.specify/templates/
+!.specify/memory/
+