Enhance conversation workflows by introducing summarization and classification agents. Implement retrieval nodes for document fetching, and update settings for Supabase integration. Add Markdown to PDF conversion utilities and improve agent service to handle document metadata. Refactor agent registry to support orchestrated workflows.

Update model references from GPT-5 Pro to GPT-5 across enums, models, and service files, and adjust agent registry to use the history-enabled graph creation function.

FIrst Commit