fix(verifier-ray): bench-compress

[Tabaie]

bench_compress has not compiled since #3455 added an r5_config import to poseidon2.zig, and its runner reported "no cycles recorded" because zkc gates printf output — which carries both the clock cycle: trace and the guest's VERIFIER-MARK writes — behind -vvv.

Fixes both, and forwards -Ddisable-accelerators through run.go -accel, which makes the accelerated Poseidon2 path measurable for the first time: 141.40 cycles/call against 8674.20 for software.

[Copilot]

Pull request overview

This PR restores the verifier-ray/bench/bench_compress micro-benchmark by updating its Zig build wiring to match the post-#3455 r5_config requirements, and by ensuring zkc emits the trace output that the Go runner parses. It also adds a runner flag to benchmark the accelerated Poseidon2 path (custom RISC-V opcode) vs the software implementation.

Changes:

• Add -accel to the Go runner and forward the corresponding Zig build option to enable/disable accelerators.
• Update the benchmark’s build.zig to supply r5_config (and conditionally import lineth_accelerators) so it compiles after the Poseidon2 acceleration changes.
• Ensure zkc exec is invoked with -vvv so the runner can observe clock cycle: trace lines and VERIFIER-MARK outputs.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
verifier-ray/bench/bench_compress/run.go	Adds -accel, forwards -Ddisable-accelerators=false when requested, and enables zkc printf output via -vvv so cycle/marker parsing works.
verifier-ray/bench/bench_compress/build.zig	Introduces the disable-accelerators option (defaulting to software), supplies r5_config, and conditionally imports lineth_accelerators to match Poseidon2’s new compile-time config expectations.
verifier-ray/bench/bench_compress/bench/bench-compress.csv	Updates the recorded baseline cycle measurement for Poseidon2 compression.

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