fix(ci): fix bench script and exec plugin skip

Add bench script for running benchmarks locally and in CI.
Skip exec:exec on non-performance modules via pluginManagement
(dummy executable + skip=true); override with skip=false in
performance module. Fixes dep resolution failure in clean CI cache.

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

Author: dfa1

.github/workflows/benchmark.yml

@@ -37,11 +37,8 @@ jobs:
           unzip -j flatc.zip flatc
           sudo install -m 755 flatc /usr/local/bin/flatc
 
-      - name: Build
-        run: ./mvnw compile -pl performance -am -DskipTests -q
-
       - name: Run benchmarks
-        run: ./mvnw exec:exec -pl performance -am -DskipTests
+        run: ./bench
 
       - name: Store benchmark results
         uses: benchmark-action/github-action-benchmark@v1

CLAUDE.md

@@ -47,13 +47,13 @@ Never use `mvn install` or `./mvwn install`.
 ./mvnw verify -pl integration -am -Dit.test="RustWritesJavaReadsIntegrationTest#s3_pcoVortex_javaDecodeMatchesJni"
 
 # Run all benchmarks
-./mvnw compile -pl performance -am -DskipTests -q && ./mvnw exec:exec -pl performance -DskipTests
+./bench
 
 # Run specific benchmark class
-./mvnw compile -pl performance -am -DskipTests -q && ./mvnw exec:exec -pl performance -DskipTests -Dbenchmark=RustVsJavaReadBenchmark
+./bench RustVsJavaReadBenchmark
 
 # Run specific benchmark method (always use ClassName.methodName filter)
-./mvnw compile -pl performance -am -DskipTests -q && ./mvnw exec:exec -pl performance -DskipTests -Dbenchmark=RustVsJavaReadBenchmark.javaReadVolume
+./bench RustVsJavaReadBenchmark.javaReadVolume
 ```
 
 ### File format

bench

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -euo pipefail
+./mvnw compile -pl performance -am -DskipTests -q
+./mvnw exec:exec -pl performance -am -DskipTests ${1:+-Dbenchmark="$1"}

performance/pom.xml

@@ -81,11 +81,12 @@
 					</annotationProcessorPaths>
 				</configuration>
 			</plugin>
-			<!-- Run benchmarks: ./mvnw compile -pl performance -am -DskipTests -q && ./mvnw exec:exec -pl performance -DskipTests [-Dexec.args="ClassName.methodName"] -->
+			<!-- Run benchmarks: ./mvnw compile -pl performance -am -DskipTests -q && ./mvnw exec:exec -pl performance -am -DskipTests [-Dbenchmark="ClassName.methodName"] -->
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>exec-maven-plugin</artifactId>
 				<configuration>
+					<skip>false</skip>
 					<executable>java</executable>
 					<arguments>
 						<argument>--add-opens</argument>

pom.xml

@@ -169,6 +169,10 @@
 					<groupId>org.codehaus.mojo</groupId>
 					<artifactId>exec-maven-plugin</artifactId>
 					<version>3.5.0</version>
+					<configuration>
+						<skip>true</skip>
+						<executable>java</executable>
+					</configuration>
 				</plugin>
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>