fix(db): add tenant_id to save_public_agent_message function

supabase/migrations/20260106133948_fix_save_public_agent_message_tenant_id.sql

@@ -0,0 +1,66 @@
+-- Fix save_public_agent_message to include tenant_id
+-- The public_agent_messages table requires tenant_id (NOT NULL) but the function wasn't setting it
+
+CREATE OR REPLACE FUNCTION public.save_public_agent_message(
+  p_session_id text,
+  p_agent_id uuid,
+  p_role text,
+  p_content text,
+  p_metadata jsonb DEFAULT '{}'::jsonb,
+  p_visitor_fingerprint text DEFAULT NULL,
+  p_user_agent text DEFAULT NULL,
+  p_ip_address text DEFAULT NULL
+)
+RETURNS uuid
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path TO 'public'
+AS $function$
+DECLARE
+  v_message_id uuid;
+  v_tenant_id uuid;
+BEGIN
+  -- Get the current tenant context
+  v_tenant_id := get_current_tenant_id();
+
+  -- If no tenant context, try to get it from the agent
+  IF v_tenant_id IS NULL THEN
+    SELECT tenant_id INTO v_tenant_id
+    FROM ai_agents
+    WHERE id = p_agent_id;
+  END IF;
+
+  -- If still no tenant_id, raise an error
+  IF v_tenant_id IS NULL THEN
+    RAISE EXCEPTION 'No tenant context available for saving message';
+  END IF;
+
+  -- Insert the message into public_agent_messages table
+  INSERT INTO public_agent_messages (
+    session_id,
+    agent_id,
+    role,
+    content,
+    metadata,
+    visitor_fingerprint,
+    user_agent,
+    ip_address,
+    tenant_id
+  ) VALUES (
+    p_session_id,
+    p_agent_id,
+    p_role,
+    p_content,
+    p_metadata,
+    p_visitor_fingerprint,
+    p_user_agent,
+    CASE
+      WHEN p_ip_address IS NULL THEN NULL
+      ELSE p_ip_address::inet
+    END,
+    v_tenant_id
+  ) RETURNING id INTO v_message_id;
+
+  RETURN v_message_id;
+END;
+$function$;