Initial commit — scientific-viz skill

Claude Code skill for publication-quality scientific visualisations:
chart, architecture, flowchart, comparison, pipeline. Bundles matplotlib
publication defaults (300 DPI, serif font, colorblind palette), NADEZHDA
project palette, Mermaid conventions, and ready-to-use templates.

Contents:
- SKILL.md                              — behaviour spec (5 types, generation pipeline)
- README.md                             — human-facing entry: when, install, examples
- reference/chart_patterns.md           — Pareto/bar/radar/heatmap snippets
- templates/architecture_nadezhda.md    — Mermaid templates for Teacher-Student / LUPI / fusion

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

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+# Python build artifacts
+__pycache__/
+*.py[cod]
+*$py.class
+*.egg-info/
+*.egg
+.eggs/
+build/
+dist/
+
+# Virtual environments
+.venv/
+venv/
+env/
+ENV/
+.python-version
+
+# Coverage / testing
+.coverage
+.coverage.*
+htmlcov/
+.tox/
+.nox/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.dmypy.json
+
+# IDE / OS
+.idea/
+.vscode/
+!.vscode/settings.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.swp
+*.swo
+*~
+.DS_Store
+Thumbs.db
+desktop.ini
+
+# Jupyter
+.ipynb_checkpoints/
+
+# Secrets — never commit
+.env
+.env.local
+*.key
+*.pem
+credentials.json
+
+# Temp
+*.log
+*.tmp
+*.bak
+*.backup
+*.orig
+~$*