Add friends_only filter to beli_search_restaurants tool

Replaces include_friends with friends_only so the LLM can return
exclusively friend-sourced rows when user asks what their friends like,
rather than mixing in own rankings.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

blueprints/conversation/agents.py

@@ -1319,7 +1319,7 @@ async def beli_search_restaurants(
     cuisine: str = "",
     name: str = "",
     category: str = "",
-    include_friends: bool = True,
+    friends_only: bool = False,
 ) -> str:
     """Search restaurant, bar, cafe, and bakery recommendations from Beli profiles.
 
@@ -1337,7 +1337,8 @@ async def beli_search_restaurants(
         category: Filter by type — 'restaurant', 'bar', 'cafe', 'bakery', 'dessert'. Leave blank for all.
             IMPORTANT: When the user asks for "restaurants", "top restaurants", or "places to eat",
             always pass category='restaurant'. Only leave blank when the user explicitly wants all types.
-        include_friends: Include friends' rankings (default True). Set False for own lists only.
+        friends_only: Set True when the user specifically asks what their friends like or recommend.
+            False (default) returns the user's own rankings only.
 
     Returns:
         Formatted list of matching places with ratings, type, location, and attribution.
@@ -1347,7 +1348,9 @@ async def beli_search_restaurants(
     try:
         qs = BeliRestaurant.all()
 
-        if not include_friends:
+        if friends_only:
+            qs = qs.exclude(friend_beli_user_id="")
+        else:
             qs = qs.filter(friend_beli_user_id="")
 
         if status: