Data Flow
=========

The current request flow is:

.. code-block:: text

   User message
       |
       v
   RequirementExtractor
       |
       v
   RentalRequirements
       |
       v
   PropertyMatcher
       |
       v
   MatchResult list
       |
       v
   Lead summary

Stateful Conversations
----------------------

The API accepts ``current_requirements`` so a future Discord, WhatsApp, or web
channel can send the existing conversation state back into Alba Core. Alba Core
then merges new extracted fields over the previous state.

This avoids making Alba Core depend on a specific chat platform.