fix(cli): require --round-cap >= 1

src/pf1e_simulator/cli.py

@@ -105,6 +105,9 @@ def render_transcript_table(transcript: Sequence[str]) -> str:
 
 
 def _build_spec(args: argparse.Namespace) -> EncounterSpec:
+    if args.round_cap < 1:
+        msg = f"--round-cap must be >= 1, got {args.round_cap}"
+        raise CliError(msg)
     map_spec = load_map(args.map)
     provided = [tuple(raw) for raw in args.side]
     provided_names = {raw[0] for raw in provided}
@@ -189,7 +192,7 @@ def main(argv: list[str] | None = None) -> int:
         "--round-cap",
         type=int,
         default=100,
-        help="max rounds per battle (default: 100)",
+        help="max rounds per battle, >= 1 (default: 100)",
     )
     parser.add_argument(
         "--transcript",