changes

app/services/customers_search.py

@@ -4,7 +4,15 @@ from sqlalchemy import or_, and_, func, asc, desc
 from app.models.rolodex import Rolodex
 
 
-def apply_customer_filters(base_query, search: Optional[str], group: Optional[str], state: Optional[str], groups: Optional[List[str]], states: Optional[List[str]]):
+def apply_customer_filters(
+    base_query,
+    search: Optional[str],
+    group: Optional[str],
+    state: Optional[str],
+    groups: Optional[List[str]],
+    states: Optional[List[str]],
+    name_prefix: Optional[str] = None,
+):
     """Apply shared search and group/state filters to the provided base_query.
 
     This helper is used by both list and export endpoints to keep logic in sync.
@@ -53,6 +61,16 @@ def apply_customer_filters(base_query, search: Optional[str], group: Optional[st
     if effective_states:
         base_query = base_query.filter(Rolodex.abrev.in_(effective_states))
 
+    # Optional: prefix filter on name (matches first OR last starting with the prefix, case-insensitive)
+    p = (name_prefix or "").strip().lower()
+    if p:
+        base_query = base_query.filter(
+            or_(
+                func.lower(Rolodex.last).like(f"{p}%"),
+                func.lower(Rolodex.first).like(f"{p}%"),
+            )
+        )
+
     return base_query