perf(prover): consume objects to reduce persistent memory

[Bisht13]

Reduces peak memory by 4 GB.
Before

prove: 43.4 s duration, 10.4 GB peak memory, 8.58 GB local, 2.78M allocations

After

prove: 38.7 s duration, 6.13 GB peak memory, 4.29 GB local, 2.64M allocations

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #195 will not alter performance

_{Comparing px/consume-parsed-objects (045ecc7) with main (9a1f428)}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

✅ 35 untouched