Expand JMH coverage for JRT and AVM hot paths

[bertysentry]

Summary

• Added focused JMH coverage for JRT conversion and truthiness helpers, including numeric strings, boxed numbers, empty/non-numeric values, and regex-backed boolean evaluation.
• Added AVM expression benchmarks that compile expressions once, bind input during setup, and measure only AVM.eval(...) on stable records.
• Added short script-level benchmarks for mixed numeric input and adjusted the benchmark workflows so the default JMH pattern publishes all benchmarks.
• Reduced the existing compare benchmark to 2 warmup iterations and 3 measurement iterations.

Testing

• mvn formatter:format
• mvn -Pbenchmark -DskipTests package
• java -jar target\jawk-6.4.01-SNAPSHOT-benchmarks.jar -l .
• Focused JMH smoke run for AVMExpressionBenchmark.literalAddition
• mvn test

[Copilot]

Pull request overview

This PR expands the JMH benchmark suite to cover additional hot paths in Jawk’s runtime (JRT) and expression evaluation (AVM), improving performance regression visibility for common conversion/truthiness and eval scenarios.

Changes:

• Added new JMH benchmarks for JRT conversion, truthiness, and increment helpers (JRTHotPathBenchmark).
• Added AVM expression-evaluation benchmarks that compile expressions once and measure AVM.eval(...) (AVMExpressionBenchmark), plus short end-to-end script benchmarks (AwkScriptBenchmark).
• Updated benchmark iteration counts and adjusted workflow defaults for the “run all benchmarks” pattern.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/jmh/java/io/jawk/jrt/JRTHotPathBenchmark.java	Adds microbenchmarks for common JRT conversions, truthiness, and inc(...) operand shapes.
src/jmh/java/io/jawk/jrt/JRTCompare2Benchmark.java	Reduces warmup/measurement iterations to shorten benchmark runtime.
src/jmh/java/io/jawk/backend/AVMExpressionBenchmark.java	Adds compiled-expression benchmarks for AVM.prepareForEval(...) + AVM.eval(...) hot path.
src/jmh/java/io/jawk/AwkScriptBenchmark.java	Adds small script-level benchmarks to exercise a broader runtime path (parse → run → output).
.github/workflows/release.yml	Changes the default JMH include pattern used during release benchmark publishing.
.github/workflows/benchmarks.yml	Changes the default JMH include pattern used in the publish-benchmarks workflow.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated no new comments.