Revise error norm simulation and GPU test coverage

[SoraSuegami]

Summary

• Refine error-norm and evaluation-error simulation logic across the lattice/FHE pipeline.
• Update matrix, sampler, and input-injector code paths to align with the revised error model.
• Extend and adjust CPU/GPU benchmarks and tests for GGH15, AKY24, Diamond, LWE, and Ring-GSW flows.
• Refresh build and dependency metadata to support the updated simulation and test setup.

Testing

• Not run (not requested)