refactor(core): route integrations through adapter factory

harness/tht/cli/memory_cmd.py

@@ -153,6 +153,7 @@ def save_one_cmd(
     """
     import json as _json
 
+    from tht.adapters.factory import build_vector_store
     from tht.cli.vector_cmd import make_embedder
     from tht.memory import load_registry, promote, save_one_memory
     from tht.vectorstore.rest_client import VectorRestClient
@@ -167,6 +168,7 @@ def save_one_cmd(
             fg=typer.colors.RED, err=True,
         )
         raise typer.Exit(code=4)
+    build_vector_store(cfg, require_write=True)
 
     sdir = session_dir(cfg, session)
     # Promuove la decisione scelta nel registro locale (idempotente: salta se gia' presente
@@ -449,6 +451,7 @@ def index_solved_session(cfg, session_id: str) -> int:
     Solleva RuntimeError se manca la writer key e SolvedIndexError se mancano gli
     artefatti: il finalize li degrada a warning, il comando CLI li converte in
     errori espliciti."""
+    from tht.adapters.factory import build_vector_store
     from tht.cli.sql_cmd import promoted_tables_for
     from tht.cli.vector_cmd import make_embedder
     from tht.solved import build_solved_record, save_solved_question
@@ -459,6 +462,7 @@ def index_solved_session(cfg, session_id: str) -> int:
             "vector_write_rest assente: la coppia domanda->SQL si indicizza solo con la "
             "writer key configurata nel workspace yaml"
         )
+    build_vector_store(cfg, require_write=True)
     manifest = load_session_or_exit(cfg, session_id)
     record = build_solved_record(
         session_dir(cfg, session_id), manifest, promoted_tables_for(cfg, session_id)