fix(firstleg): defer PDA allocation release transition

firstleg/src/main/java/com/baiyue/firstleg/mapper/InboundPalletAllocationMapper.java

@@ -24,10 +24,11 @@ public interface InboundPalletAllocationMapper extends BaseMapper<InboundPalletA
     @Update("""
         UPDATE fl_inbound_pallet_allocation
            SET picked_package_count = picked_package_count + #{count},
-               allocation_status = CASE
-                 WHEN picked_package_count + #{count} = allocated_package_count THEN 'RELEASED'
-                 ELSE 'CONFIRMED'
-               END,
+               /* Keep the snapshot confirmed until the atomic warehouse release
+                  succeeds. markReleased is the single owner of this transition;
+                  changing it here makes the subsequent idempotent release update
+                  affect zero rows and surfaces as S0500 from PDA pick. */
+               allocation_status = 'CONFIRMED',
                updated_at = CURRENT_TIMESTAMP(3)
          WHERE id = #{id}
            AND tenant_id = #{tenantId}