refactor(core): route integrations through adapter factory

harness/tht/cli/db_cmd.py

@@ -3,6 +3,8 @@ from pathlib import Path
 import typer
 from sqlalchemy.exc import OperationalError
 
+from tht.adapters.dwh import ThothRestDwhAdapter
+from tht.adapters.factory import build_dwh
 from tht.cli.config_cmd import CONFIG_OPT
 from tht.config import ConfigError, load_config
 from tht.db.connection import can_create_in_schema, make_engine, ping, writable_tables
@@ -11,20 +13,21 @@ from tht.db.fetch_ca import CaFetchError, describe_pem, fetch_chain_pem, parse_h
 db_app = typer.Typer(help="Operazioni sul database target")
 
 
-def _ping_rest(cfg, schema: str) -> None:
+def _ping_rest(adapter: ThothRestDwhAdapter, cfg, schema: str) -> None:
     """Health check via REST. Il read-only è garantito strutturalmente dall'API
     (ammette solo SELECT/WITH): non serve il controllo dei privilegi di scrittura."""
-    from tht.rest.client import RestClient, RestError
+    from tht.rest.client import RestError
 
     try:
-        info = RestClient(cfg.rest).ping()
+        info = adapter._client.ping()
     except RestError as e:
         typer.secho(f"ERRORE di connessione: {e}", fg=typer.colors.RED, err=True)
         raise typer.Exit(code=1)
     if not info.get("db_connected") or not info.get("schema_accessible"):
         typer.secho(
             f"ERRORE: DWH non accessibile via REST (risposta: {info}).",
-            fg=typer.colors.RED, err=True,
+            fg=typer.colors.RED,
+            err=True,
         )
         raise typer.Exit(code=1)
     typer.secho(
@@ -44,8 +47,9 @@ def ping_cmd(config: Path = CONFIG_OPT) -> None:
         typer.secho(f"ERRORE: {e}", fg=typer.colors.RED, err=True)
         raise typer.Exit(code=1)
     schema = cfg.database.db_schema
-    if cfg.database.transport == "rest":
-        _ping_rest(cfg, schema)
+    adapter = build_dwh(cfg)
+    if isinstance(adapter, ThothRestDwhAdapter):
+        _ping_rest(adapter, cfg, schema)
         return
     engine = make_engine(cfg.database)
     try: