fix(bench): restore smoke and resilience tests

cross build fails inside its Ubuntu 20.04 container because the nightly
toolchain's build scripts need glibc 2.32+. Since musl is installed
natively, use cargo directly.

Bench init.sh used removed positional subcommands (wallhack daemon entry)
instead of the unified --role flag.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: maxholman

bench/bench.just

@@ -107,7 +107,7 @@ build-tc:
 
 cargo-build-musl:
     echo "Building musl binary (slim)..."
-    cross build --release --target "{{ musl_target }}" -p wallhack-cli --no-default-features --features slim
+    cargo build --release --target "{{ musl_target }}" -p wallhack-cli --no-default-features --features slim
 
 clean:
     rm -rf "{{ staging_dir }}"

bench/vm/init.sh

@@ -150,7 +150,7 @@ _run_exit() {
 
 	echo "WALLHACK_TS: exit_wallhack_start=$(date +%s%3N)"
 	# wallhack exit node — connects to entry (retries with backoff)
-	wallhack daemon ${DEBUG:+"--debug"} exit \
+	wallhack daemon ${DEBUG:+"--debug"} --role exit \
 		-c "${ENTRY_ETH}:${WH_PORT}${_TSUFFIX}" \
 		--name "${PEER_NAME}" \
 		2>&1 | tee /tmp/wallhack-exit.log &
@@ -304,7 +304,7 @@ _run_entry() {
 
 	echo "WALLHACK_TS: entry_wallhack_start=$(date +%s%3N)"
 	# Start wallhack entry node (listen mode)
-	wallhack daemon ${DEBUG:+"--debug"} entry \
+	wallhack daemon ${DEBUG:+"--debug"} --role entry \
 		-l ":${WH_PORT}${_TSUFFIX}" \
 		2>&1 | tee /tmp/wallhack-entry.log &