test(perf): update tokenizer/parser benchmarks

[reubeno]

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Test Results

    2 files      9 suites   1m 21s ⏱️
  585 tests   585 ✅ 0 💤 0 ❌
1 156 runs  1 156 ✅ 0 💤 0 ❌

Results for commit 2b43823.

♻️ This comment has been updated with latest results.

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Performance Benchmark Report

Benchmark name	Baseline (μs)	Test/PR (μs)	Delta (μs)	Delta %
clone_shell_object	16.58 μs	16.47 μs	-0.12 μs	🟢 -0.70%
eval_arithmetic	0.19 μs	0.18 μs	-0.00 μs	⚪ Unchanged
expand_one_string	1.57 μs	1.56 μs	-0.01 μs	⚪ Unchanged
for_loop	33.14 μs	32.58 μs	-0.56 μs	⚪ Unchanged
function_call	3.24 μs	3.33 μs	0.09 μs	⚪ Unchanged
instantiate_shell	47.91 μs	47.50 μs	-0.41 μs	⚪ Unchanged
instantiate_shell_with_init_scripts	22146.10 μs	22140.85 μs	-5.25 μs	⚪ Unchanged
parse_bash_completion	1662.64 μs	1662.79 μs	0.15 μs	⚪ Unchanged
parse_sample_script	2.16 μs	1.75 μs	-0.41 μs	🟢 -19.16%
run_echo_builtin_command	16.23 μs	16.39 μs	0.16 μs	⚪ Unchanged
run_one_external_command	1729.42 μs	2380.86 μs	651.44 μs	🟠 +37.67%

Benchmarks added:

• tokenize_sample_script

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
brush-core/src/builtins/set.rs	🟠 60.69%	🟠 59.66%	🔴 -1.03%
brush-core/src/jobs.rs	🔴 37.07%	🔴 43.1%	🟢 6.03%
brush-core/src/shell.rs	🟢 82.27%	🟢 82.4%	🟢 0.13%
brush-parser/src/tokenizer.rs	🟢 96.12%	🟢 96.13%	🟢 0.01%
Overall Coverage	🟢 76.96%	🟢 77.04%	🟢 0.08%

Minimum allowed coverage is 70%, this run produced 77.04%