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Identify data sources, schedules, and dependencies.\n2. Design idempotent tasks with clear ownership and retries.\n3. Implement DAGs with observability and alerting hooks.\n4. Validate in staging and document operational runbooks.\n\nRefer to `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.\n\n## Safety\n\n- Avoid changing production DAG schedules without approval.\n- Test backfills and retries carefully to prevent data duplication.\n\n## Resources\n\n- `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.\n\n## Limitations\n- Use this skill only when the task clearly matches the scope described above.\n- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.\n- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are 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