Migrate mojo-benchsuite to Mojo 1.0 baseline

[Mjboothaus]

Summary

• migrate benchmark framework and suites to Mojo 1.0 syntax/import/callback patterns
• align pixi channels/dependencies and benchmark smoke-test task with stable policy
• update quickstart and release notes for the new API and validation posture

Validation

• pixi run test
• pixi run bench-all

Co-Authored-By: Oz oz-agent@warp.dev

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
scripts/run_benchmarks.py	5% smaller
.github/workflows/benchmarks.yml	0% smaller
LEARNINGS.md	Unsupported file format
README.md	Unsupported file format
SPEC.md	Unsupported file format
benchmarks/baselines/.gitkeep	Unsupported file format
benchmarks/bench_adaptive.mojo	Unsupported file format
benchmarks/bench_comprehensive.mojo	Unsupported file format
benchmarks/bench_config_workloads.mojo	Unsupported file format
benchmarks/bench_data_transform.mojo	Unsupported file format
benchmarks/bench_startup_costs.mojo	Unsupported file format
benchmarks/bench_string_utils.mojo	Unsupported file format
benchmarks/implementations/string_utils.mojo	Unsupported file format
docs/BLOG_POST_MOJO_BENCHSUITE_WHY_WHAT_HOW.md	Unsupported file format
docs/EXAMPLES.md	Unsupported file format
docs/JUST_SETUP.md	Unsupported file format
docs/QUICKSTART.md	Unsupported file format
docs/RELEASE_NOTES.md	Unsupported file format
docs/ROADMAP.md	Unsupported file format
examples/complex_pipeline_benches.mojo	Unsupported file format
examples/gpu_vector_add_benches.mojo	Unsupported file format
examples/service_startup_benches.mojo	Unsupported file format
examples/simple_benches.mojo	Unsupported file format
justfile	Unsupported file format
pixi.lock	Unsupported file format
pixi.toml	Unsupported file format
src/benchsuite.mojo	Unsupported file format
src/benchsuite/__init__.mojo	Unsupported file format