feat: describegpt add --prompt sessions for iterative SQL RAG refinement
#3200
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- make clippy happy - rust fmt - clean up weird rustfmt linebreak choices - add some more comments
- more language/dialect examples - space out language special behavior in --prompt (chat) mode - unconditionally pass analysis_results when generating description and tags
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Pull request overview
This PR introduces stateful session support for iterative SQL query refinement through RAG (Retrieval-Augmented Generation). It adds --session and --session-len flags to enable multi-turn conversations where the LLM can refine SQL queries based on execution results and errors, improving upon the limitations of one-shot SQL generation.
Key Changes:
- Added session state management with persistence to markdown files containing conversation history, baseline SQL, results, and errors
- Implemented sliding window mechanism for managing session context length with automatic summarization of older messages
- Enhanced SQL execution tracking to capture and store results (10-row samples) and errors for refinement context
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as one-shot SQL generation is hit and miss
also, allows user to request changes to a working SQL query