added: profiling toolchain (py-spy, pyinstrument, pytest-benchmark, memray, snakeviz)
New `profile` optional-deps group, opt-in Pyinstrument ASGI middleware gated by DECNET_PROFILE_REQUESTS, bench marker + tests/perf/ micro-benchmarks for repository hot paths, and scripts/profile/ helpers for py-spy/cProfile/memray.
This commit is contained in: