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Message Parsing & Prompt Injection Flow

Diagram​

Flow Summary​

WhatsApp / WebSocket
        |
        v
  Prompt Injection (_build_agent_system_prompt)
    1. Base prompt (node config)
    2. Router instruction (if multi-agent)
    3. Language instruction (always)
    4. Tool priority (if KB + web)
    5. Format instruction (text/JSON)
    6. Channel-specific:
         WhatsApp -> WHATSAPP_SYSTEM_PROMPT
         Web      -> Structured card format (if product keywords)
        |
        v
  LLM Call -> AIMessage
        |
        v
  Response Parsing (by channel)
    WhatsApp: parse_whatsapp_message()
      -> strip images -> format links -> normalize lists -> clean markdown
      -> send plain text

    WebSocket: parse_markdown_to_content_blocks()
      -> detect numbered items -> product card check
      -> text blocks + card carousel blocks
      -> send JSON