Changeset 0.30.1 (#200)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

server/store/postgres/memory.go

@@ -301,3 +301,36 @@ func (s *MemoryStore) UpsertExtractionLog(ctx context.Context, channelID, userID
 	`, channelID, userID, lastMessageID, count)
 	return err
 }
+
+// ── v0.30.1 — Memory Compaction ────────────────────────────────────────
+
+func (s *MemoryStore) DecayConfidence(ctx context.Context, olderThan string, decayFactor float64) (int, error) {
+	res, err := DB.ExecContext(ctx, `
+		UPDATE memories
+		SET confidence = confidence * $1,
+		    updated_at = now()
+		WHERE status = 'active'
+		  AND updated_at < $2::timestamptz
+		  AND confidence > 0.1
+	`, decayFactor, olderThan)
+	if err != nil {
+		return 0, err
+	}
+	n, _ := res.RowsAffected()
+	return int(n), nil
+}
+
+func (s *MemoryStore) Prune(ctx context.Context, belowConfidence float64) (int, error) {
+	res, err := DB.ExecContext(ctx, `
+		UPDATE memories
+		SET status = 'archived',
+		    updated_at = now()
+		WHERE status = 'active'
+		  AND confidence < $1
+	`, belowConfidence)
+	if err != nil {
+		return 0, err
+	}
+	n, _ := res.RowsAffected()
+	return int(n), nil
+}