feat: add asv-codspeed package for airspeed velocity support

[art049]

Summary

• Add a new asv-codspeed workspace package that runs ASV (airspeed velocity) time_* benchmarks with CodSpeed instrumentation
• Reuses the existing pytest-codspeed instruments (walltime + valgrind) and reports as pytest-codspeed to the CodSpeed platform
• Includes benchmark discovery, CLI (python -m asv_codspeed run), parameterized benchmark support, and setup/teardown lifecycle
• 30 tests covering discovery, runner, and CLI

Test plan

• All 30 asv-codspeed tests pass
• All 51 existing pytest-codspeed tests pass (no regressions)
• Verified with codspeed run --mode simulation — results uploaded successfully
• CI passes

🤖 Generated with Claude Code

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will create unknown performance changes

_{Comparing cod-2165-support-airspeed-velocity-asv (47a9500) with master (adee8a1)}

Summary

🆕 248 new benchmarks
⏩ 220 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
🆕	Simulation	test_mmap_operation[40960]	N/A	106 µs	N/A
🆕	Simulation	test_make_bandpass	N/A	47.7 µs	N/A
🆕	Simulation	test_fs_write[100]	N/A	34 µs	N/A
🆕	Simulation	test_open_close_fd[10]	N/A	38.5 µs	N/A
🆕	Simulation	test_multiprocessing_map[100]	N/A	6.8 ms	N/A
🆕	Simulation	test_word_exists[board0-ABCCED]	N/A	64.8 µs	N/A
🆕	Simulation	test_hostname_resolution[1.1.1.1]	N/A	48.7 µs	N/A
🆕	Simulation	test_is_safe[board0-1-1]	N/A	44.6 µs	N/A
🆕	Simulation	test_noop_pass	N/A	13.8 µs	N/A
🆕	Simulation	test_noop_ellipsis_decorated	N/A	15.9 µs	N/A
🆕	Simulation	test_make_highshelf	N/A	46.8 µs	N/A
🆕	Simulation	test_generate_all_permutations[sequence1]	N/A	108.1 µs	N/A
🆕	Simulation	test_threadpool_map[1000]	N/A	38.8 ms	N/A
🆕	Simulation	test_generate_all_combinations[4-2]	N/A	37 µs	N/A
🆕	Simulation	test_tcp_connection[8.8.8.8-53]	N/A	42 µs	N/A
🆕	Simulation	test_minimax[scores0]	N/A	34.4 µs	N/A
🆕	Simulation	test_fs_write[1000000]	N/A	1.8 ms	N/A
🆕	Simulation	test_is_complete[board0]	N/A	25.9 µs	N/A
🆕	Simulation	test_fs_read[100000]	N/A	198.5 µs	N/A
🆕	Simulation	test_sleep[0.001]	N/A	15.2 µs	N/A
...	...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

Footnotes

1. 220 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩