fix(voice): preserve analyst result and tracking contracts

keep contacts counts, rows, scope and provenance on one retained snapshot

report capped cohorts as lower bounds

separate sibling tool cancellation from newer user turns

align track_entity validation across runtime and benchmark paths

src/voice/actionSchemas.js

@@ -527,15 +527,21 @@ const schemas = [
       properties: {
         query: {
           type: 'string',
+          minLength: 1,
+          pattern: '\\S',
         },
         layerId: {
           type: 'string',
         },
         referent: {
           type: 'integer',
+          enum: [-1, 1, 2, 3, 4, 5],
         },
       },
-      required: ['query'],
+      anyOf: [
+        { type: 'object', required: ['query'] },
+        { type: 'object', required: ['referent'] },
+      ],
     },
   },
   {