Initial commit

server/brain/search.py

@@ -0,0 +1,28 @@
+"""
+brain/search.py — Semantic search over the thought database.
+
+Generates an embedding for the query text, then runs pgvector similarity
+search. All logic is thin wrappers over database.py primitives.
+"""
+from __future__ import annotations
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+async def semantic_search(
+    query: str,
+    threshold: float = 0.7,
+    limit: int = 10,
+    user_id: str | None = None,
+) -> list[dict]:
+    """
+    Embed the query and return matching thoughts ranked by similarity.
+    Returns an empty list if Brain DB is unavailable.
+    """
+    from .embeddings import get_embedding
+    from .database import search_thoughts
+
+    embedding = await get_embedding(query)
+    return await search_thoughts(embedding, threshold=threshold, limit=limit, user_id=user_id)