Support --energy-gev in dwarf make-root for the new minicalosim energy arg

run_pbwo4/run_sampling now accept a trailing energy_GeV positional arg;
thread it through plan/run/seed so datasets like pbwo4_10gev can be
generated at non-default beam energies.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

scripts/dwarf.py

@@ -363,6 +363,16 @@ def make_root(
     gen: Annotated[
         str, typer.Option("--gen", help="Existing gen tag under raw/<kind>/, e.g. gen1")
     ],
+    energy_gev: Annotated[
+        float | None,
+        typer.Option(
+            "--energy-gev",
+            help="energy_GeV passed to the executable (default: executable's own "
+            "default, currently 1.0). Note the dataset detector label is not "
+            "derived from this — e.g. use '--detector pbwo4_10gev --energy-gev 10' "
+            "to name the dataset accordingly.",
+        ),
+    ] = None,
     kind: Annotated[
         str, typer.Option("--kind", help="steps | hits | ... (default: steps)")
     ] = "steps",
@@ -390,6 +400,7 @@ def make_root(
         dataset_root=str(dataset_root),
         jobs=jobs,
         execute=execute,
+        energy_gev=energy_gev,
     )