fix: align CLI default and worker no-hits debug fields with overlay-first ranking

Author: cursoragent

src/core/actions.js

@@ -303,8 +303,8 @@ export async function handleAction(params) {
         const rawResults = searchBM25(bm25, input, candidateLimit);
         const orderedResults = hasMixedOrigins
           ? [...rawResults].sort((a, b) => {
-              const ao = docMap.get(a.id)?.origin || "local";
-              const bo = docMap.get(b.id)?.origin || "local";
+              const ao = docMap.get(a.id)?.origin || "baseline";
+              const bo = docMap.get(b.id)?.origin || "baseline";
               if (ao !== bo) return ao === "local" ? -1 : 1;
               return b.score - a.score;
             })

workers/src/orchestrate.ts

@@ -1421,6 +1421,11 @@ async function runSearch(
         baseline_url: index.baseline_url,
         knowledge_base_url: knowledgeBaseUrl,
         search_index_size: bm25.N,
+        overlay_doc_count: index.stats.canon,
+        baseline_doc_count: index.stats.baseline,
+        overlay_hits_in_top_n: 0,
+        baseline_hits_in_top_n: 0,
+        result_grouping: knowledgeBaseUrl ? "overlay_first" : "default",
         duration_ms: Date.now() - startMs,
         generated_at: new Date().toISOString(),
       },