feat(pipeline): emit CALLS edges for decorator applications

src/pipeline/pass_parallel.c

@@ -1261,6 +1261,9 @@ static void resolve_def_decorators(resolve_ctx_t *rc, resolve_worker_state_t *ws
             char dp[CBM_SZ_256];
             snprintf(dp, sizeof(dp), "{\"decorator\":\"%s\"}", def->decorators[dc]);
             cbm_gbuf_insert_edge(ws->local_edge_buf, node->id, dn->id, "DECORATES", dp);
+            /* Ensure a CALLS edge exists so decorator appears in reference queries.
+             * Use "{}" to avoid clobbering richer metadata from pass_calls. */
+            cbm_gbuf_insert_edge(ws->local_edge_buf, node->id, dn->id, "CALLS", "{}");
             ws->semantic_resolved++;
         }
     }

src/pipeline/pass_semantic.c

@@ -321,6 +321,10 @@ static void resolve_decorator(cbm_pipeline_ctx_t *ctx, const cbm_gbuf_node_t *no
         char props[CBM_SZ_256];
         snprintf(props, sizeof(props), "{\"decorator\":\"%s\"}", decorator);
         cbm_gbuf_insert_edge(ctx->gbuf, node->id, dec->id, "DECORATES", props);
+        /* Ensure a CALLS edge exists so decorator appears in reference queries.
+         * Use "{}" to avoid clobbering richer metadata from pass_calls
+         * (dedup skips replacement when new props are "{}"). */
+        cbm_gbuf_insert_edge(ctx->gbuf, node->id, dec->id, "CALLS", "{}");
         (*count)++;
     }
 }