fix: harden reviewer workflow and memory handling

harness/tht/cli/memory_cmd.py

@@ -384,7 +384,7 @@ def search_cmd(
     from rich.table import Table
 
     from tht.cli.vector_cmd import make_embedder, open_searcher, require_vector_cfg
-    from tht.memory import decided_memory_ids, load_registry
+    from tht.memory import REUSABLE_TYPES, decided_memory_ids, load_registry
 
     cfg = _load_config_or_exit(config)
     require_vector_cfg(cfg)
@@ -401,6 +401,8 @@ def search_cmd(
         rec = by_id.get(h.ref)
         if rec is None:
             continue  # indice piu' avanti del registro: ignora
+        if rec.type not in REUSABLE_TYPES:
+            continue  # record legacy non-concept: non e' una memory riusabile
         if rec.id in excluded:
             continue  # gia' decisa in questa sessione: non riproporla
         results.append({