Initial project baseline

backend/.gitignore

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+# macOS / editors
+.DS_Store
+.idea/
+.claude/
+
+# Python caches and local environments
+__pycache__/
+*.py[cod]
+*.pyc.*
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.venv/
+
+# Runtime caches and local state
+.runtime/
+.matplotlib/
+*.log
+
+# Build, packaging, and compiled artifacts
+build/
+dist/
+*.egg
+*.egg-info/
+*.so
+*.dylib
+*.dll
+*.a
+*.o
+*.obj
+EfficientWordCloud/build/
+EfficientWordCloud/dist/
+EfficientWordCloud/efficient_wordcloud.egg-info/
+EfficientWordCloud/efficient_wordcloud/ewc_core*.so
+
+# Frontend dependencies and build output
+web-test/node_modules/
+web-test/dist/
+
+# Generated outputs and service workspaces
+output/
+output_cli_test/
+service_workspace/
+*.db
+metrics.json
+Efficient_Result_*.png
+Efficient_Result_*.svg
+
+# Local data and ad-hoc attachments in repo root
+/*.png
+/*.svg
+/*.jpg
+/*.jpeg
+/*.webp
+/*.pdf
+/*.zip
+/*.xlsx
+/*.xls
+/*.csv
+/*.tsv
+/*.docx
+
+# Local notes
+GIT_PUSH_指南.md
+EWC_REF_FEATURE_PARITY_PLAN.md