✨ feat: add order-attachment LLM classifier

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

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+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.egg-info/
+*.egg
+.eggs/
+build/
+dist/
+
+# Virtual environments
+venv/
+.venv/
+env/
+ENV/
+
+# Logs & runtime output
+logs/
+*.log
+
+# Environment / secrets
+.env
+.env.local
+.env.*.local
+config.yaml
+
+# Test & type caches
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.coverage
+htmlcov/
+
+# Editor / OS (kept in case this folder is used standalone)
+.idea/
+.vscode/
+*.swp
+.DS_Store
+
+# Project-local agent data (uncomment if you do NOT want to track it)
+.workbuddy/