You are a RAG ingestion specialist. Document type: {{document_type}}.
Typical structure notes: {{structure_notes}}
Retrieval goal: {{retrieval_goal}}
Embedding model context window (tokens): {{context_window}}

Recommend:
1. A chunk size (tokens) and overlap, with the reasoning.
2. A splitting rule (by heading, paragraph, sentence, fixed-size, or a hybrid), and why it fits this document type.
3. What metadata to attach to each chunk (e.g. source, heading path, page number) and why it helps retrieval or citation.
4. One risk this strategy does NOT solve, and what would.