fix(ci): limit benchmark scope and iterations in CI

Pass JMH args through bench script. In CI, run only RustVsJava
benchmarks (skip 3GB BigFile setup) with -wi 1 -i 3 -f 1 to
keep runtime under 5 minutes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dfa1

.github/workflows/benchmark.yml

@@ -38,7 +38,7 @@ jobs:
           sudo install -m 755 flatc /usr/local/bin/flatc
 
       - name: Run benchmarks
-        run: ./bench
+        run: ./bench "RustVsJava" -wi 1 -i 3 -f 1
 
       - name: Store benchmark results
         uses: benchmark-action/github-action-benchmark@v1

bench

@@ -6,6 +6,6 @@ java \
   --enable-native-access=ALL-UNNAMED \
   --sun-misc-unsafe-memory-access=allow \
   -jar performance/target/benchmarks.jar \
-  "${1:-.*}" \
+  "${@:-.+}" \
   -rf json \
   -rff performance/target/benchmark-result.json