feat(rag): steering notes — tune how Brain answers, stored in Postgres and injected into every system prompt

2026-08-22 16:44:42 -04:00
parent 19df7df99d
commit fc0d9a2d5c
19 changed files with 1589 additions and 34 deletions
@@ -58,6 +58,10 @@ class Settings(BaseSettings):
    chunk_target_chars: int = 2_000
    chunk_overlap_chars: int = 200
    embed_batch_size: int = 16
+    #: Total char budget for the ``<tuning>`` section of the system prompt
+    #: (phase 15, steering notes). The newest-fitting notes are kept and the
+    #: overflow is replaced by the ``[…truncated…]`` marker.
+    steering_max_chars: int = 8_000

    # --- Hybrid retrieval (A7, revised 2026-08-21) ---
    # cosine top-N ∪ Postgres FTS top-N, fused with Reciprocal Rank Fusion