build(deps): upgrade cached 0.59 -> 2.0.2

[reubeno]

Summary

Upgrades the cached dependency from 0.59.0 to 2.0.2 (the latest published 2.x) in both brush-core and brush-parser, working through the 0.x → 1.x → 2.x breaking changes.

Migration

• proc-macro path cached::proc_macro::cached → cached::macros::cached
• size = N → max_size = N on every #[cached]
• dropped result = true — Result-returning cached fns now skip caching Err by default (prior behavior preserved)
• SizedCache → LruCache; removed with_size() constructor → LruCache::builder().max_size(64).build()

Clone reductions (bonus)

The default #[cached] key is built by cloning the args, so any function whose caller did .to_owned() just to pass owned args was cloning twice per call. Switched the parser cached fns (arithmetic/word/tokenizer) to borrowed args with explicit key/convert, moving the single needed clone into key-construction — halves clones on those hot paths (and on cache hits removes the redundant caller-side clone). Cascaded &str through the prompt and parsing chains so no #[allow]s are needed.

The prompt/parsing chains genuinely need their owned values (.into_owned() is borrow-checker-mandated against &mut self; parse_string's Into<String> bound forces materialization), so those save no clones — documented in the commit rather than papered over.

regex.rs

build() is now fallible, but unwrap/expect/panic are all denied lints. The thread-local LRU cache is now Option<LruCache> built via .build().ok(), gracefully degrading to uncached regex compilation if construction ever fails (never happens with a fixed max_size, but no panic).

Testing

• cargo build --workspace ✅
• cargo clippy -p brush-parser -p brush-core ✅ (pedantic/nursery/cargo/perf all denied)
• cargo test -p brush-parser -p brush-core ✅ (all pass)

🤖 Generated with Claude Code

[reubeno]

@copilot please fix formatting to fix format check PR check failures.

[Copilot]

@copilot please fix formatting to fix format check PR check failures.

Fixed in commit style: apply cargo fmt to brush-core — cargo fmt reformatted brush-core/src/expansion.rs and brush-core/src/regex.rs.

[github-actions]

Performance Benchmark Report

Benchmark name	Baseline (μs)	Test/PR (μs)	Delta (μs)	Delta %
clone_shell_object	13.96 μs	13.87 μs	-0.10 μs	⚪ Unchanged
eval_arithmetic	0.12 μs	0.12 μs	-0.01 μs	⚪ Unchanged
expand_one_string	1.31 μs	1.28 μs	-0.03 μs	⚪ Unchanged
for_loop	26.18 μs	25.32 μs	-0.86 μs	🟢 -3.30%
full_peg_complex	43.11 μs	43.45 μs	0.34 μs	⚪ Unchanged
full_peg_for_loop	4.86 μs	4.82 μs	-0.05 μs	🟢 -1.01%
full_peg_nested_expansions	13.04 μs	12.88 μs	-0.15 μs	⚪ Unchanged
full_peg_pipeline	3.24 μs	3.28 μs	0.04 μs	⚪ Unchanged
full_peg_simple	1.32 μs	1.39 μs	0.07 μs	🟠 +5.53%
function_call	2.87 μs	2.86 μs	-0.01 μs	⚪ Unchanged
instantiate_shell	42.84 μs	43.38 μs	0.54 μs	🟠 +1.26%
instantiate_shell_with_init_scripts	22375.46 μs	22252.62 μs	-122.84 μs	⚪ Unchanged
parse_peg_bash_completion	1626.56 μs	1630.40 μs	3.84 μs	⚪ Unchanged
parse_peg_complex	14.65 μs	14.89 μs	0.23 μs	🟠 +1.60%
parse_peg_for_loop	1.46 μs	1.45 μs	-0.01 μs	⚪ Unchanged
parse_peg_pipeline	1.53 μs	1.54 μs	0.01 μs	⚪ Unchanged
parse_peg_simple	0.79 μs	0.83 μs	0.03 μs	🟠 +4.29%
run_echo_builtin_command	12.44 μs	12.20 μs	-0.24 μs	⚪ Unchanged
tokenize_sample_script	2.77 μs	2.74 μs	-0.04 μs	⚪ Unchanged

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
brush-core/src/expansion.rs	🟢 96.1%	🟢 96.08%	🔴 -0.02%
brush-core/src/prompt.rs	🟢 94.38%	🟢 94.48%	🟢 0.1%
brush-core/src/regex.rs	🟢 99.12%	🟢 99.15%	🟢 0.03%
brush-core/src/results.rs	🟢 80.16%	🟢 83.33%	🟢 3.17%
brush-core/src/shell/parsing.rs	🟢 77.14%	🟢 80%	🟢 2.86%
brush-core/src/shell/prompts.rs	🟢 97.44%	🟢 97.5%	🟢 0.06%
brush-parser/src/arithmetic.rs	🟢 92.55%	🟢 92.63%	🟢 0.08%
brush-parser/src/tokenizer.rs	🟢 93.43%	🟢 93.45%	🟢 0.02%
brush-parser/src/word.rs	🟢 93.76%	🟢 93.82%	🟢 0.06%
Overall Coverage	🟢 75.47%	🟢 75.5%	🟢 0.03%

Minimum allowed coverage is 70%, this run produced 75.5%
Maximum allowed coverage difference is -5%, this run produced 0.03%

Test Summary: bash-completion test suite

Outcome	Count	Percentage
✅ Pass	1582	75.01
❗️ Error	17	0.81
❌ Fail	156	7.40
⏩ Skip	339	16.07
❎ Expected Fail	13	0.62
✔️ Unexpected Pass	2	0.09
📊 Total	2109	100.00