feat: harden runtime readiness and session workflow

harness/tht/cli/session_cmd.py

@@ -201,6 +201,27 @@ def show_cmd(
     typer.echo(f"schema_linking.json: {'presente' if linking.exists() else 'assente'}")
 
 
+@session_app.command("retrieval-pack")
+def retrieval_pack_cmd(
+    session_id: str = typer.Argument(...),
+    config: Path = CONFIG_OPT,
+) -> None:
+    """Emette su stdout il retrieval pack persistito della sessione."""
+    cfg = _load_config_or_exit(config)
+    load_session_or_exit(cfg, session_id)
+    path = session_dir(cfg, session_id) / "retrieval_pack.md"
+    try:
+        content = path.read_text()
+    except OSError as exc:
+        typer.secho(
+            f"ERRORE: retrieval pack non disponibile per la sessione {session_id}: {exc}",
+            fg=typer.colors.RED,
+            err=True,
+        )
+        raise typer.Exit(code=1)
+    typer.echo(content, nl=False)
+
+
 @session_app.command("close")
 def close_cmd(session_id: str = typer.Argument(...), config: Path = CONFIG_OPT) -> None:
     """Chiude la sessione (status=closed)."""
@@ -212,6 +233,27 @@ def close_cmd(session_id: str = typer.Argument(...), config: Path = CONFIG_OPT)
     typer.secho(f"OK: sessione {session_id} chiusa.", fg=typer.colors.GREEN)
 
 
+@session_app.command("fail")
+def fail_cmd(session_id: str = typer.Argument(...), config: Path = CONFIG_OPT) -> None:
+    """Registra un arresto del sistema non recuperabile automaticamente."""
+    from tht.session.store import fail_session
+
+    cfg = _load_config_or_exit(config)
+    load_session_or_exit(cfg, session_id)
+    fail_session(session_id, cfg.paths.sessions)
+    typer.secho(f"OK: sessione {session_id} marcata failed.", fg=typer.colors.RED)
+
+@session_app.command("reopen")
+def reopen_cmd(session_id: str = typer.Argument(...), config: Path = CONFIG_OPT) -> None:
+    """Riapre una sessione per una ripresa manuale."""
+    from tht.session.store import reopen_session
+
+    cfg = _load_config_or_exit(config)
+    load_session_or_exit(cfg, session_id)
+    reopen_session(session_id, cfg.paths.sessions)
+    typer.secho(f"OK: sessione {session_id} riaperta.", fg=typer.colors.GREEN)
+
+
 @session_app.command("set-name")
 def set_name_cmd(
     session_id: str = typer.Argument(...),