Initial import of NavSea pbf project

.gitignore

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+# Python environments
+.venv/
+venv/
+env/
+
+# Python cache
+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+
+# Editor / OS
+.DS_Store
+Thumbs.db
+.idea/
+.vscode/
+
+# Local temp and logs
+.tmp/
+logs/
+*.log
+
+# Test / coverage caches
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.coverage
+htmlcov/
+
+# Build artifacts
+build/
+dist/
+*.egg-info/
+
+# Local runtime outputs
+report/*.tmp
+report/*.cache