first commit

.gitignore

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+# ---------- Python ----------
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.venv/
+venv/
+env/
+ENV/
+*.egg-info/
+.eggs/
+dist/
+build/
+.python-version
+.ruff_cache/
+.mypy_cache/
+.pytest_cache/
+
+# ---------- Node / Frontend ----------
+node_modules/
+frontend/dist/
+*.local
+.vite/
+.cache/
+
+# ---------- Env / Secrets ----------
+.env
+.env.*
+!.env.example
+*.pem
+*.key
+
+# ---------- Data / DB ----------
+*.sqlite
+*.sqlite3
+*.db
+backend/data/
+data/parquet/
+data/raw/
+
+# ---------- IDE / OS ----------
+.idea/
+.vscode/
+*.swp
+.DS_Store
+Thumbs.db
+
+# ---------- Claude ----------
+.claude/settings.local.json