core.memory.turn_store
======================

In-memory vector store for memory recall over PermanentHistory turns.

Stores ``(text, embedding, turn, metadata)`` tuples in parallel lists and
provides cosine-similarity search. Designed for Tier 1 scale (<100K turns);
Chroma/Qdrant backends are a future concern for larger workloads.

.. automodule:: ffai.core.memory.turn_store
   :members:
   :undoc-members:
   :show-inheritance:

Classes
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.. autoclass:: ffai.core.memory.turn_store.TurnVectorStore
   :members:
   :undoc-members:
   :show-inheritance:
   :inherited-members:

Functions
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.. autofunction:: ffai.core.memory.turn_store.cosine_similarity