feat(builtins): implement set -o / set +o option display#257
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Add support for `set -o` (human-readable) and `set +o` (re-executable) option display, matching real bash formatting exactly. - `set -o`: shows each option as `name<pad>\ton/off` - `set +o`: shows each option as `set -/+o name` (re-executable) - Supports: errexit, noglob, noclobber, noexec, nounset, pipefail, verbose, xtrace - Padding matches bash's 15-char name field Tests: 6 new spec tests (variables.test.sh: 86 → 92)
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Summary
set -ohuman-readable option display (name + on/off)set +ore-executable option display (set -/+o name)Changes
crates/bashkit/src/builtins/vars.rs: AddSET_O_OPTIONSlist,format_set_dash_o(),format_set_plus_o(), handle bare-o/+oin Set executecrates/bashkit/tests/spec_cases/bash/variables.test.sh: 6 new spec testsspecs/009-implementation-status.md: Update test counts (variables 86→92, Bash 900→906, Total 1318→1324)Test plan
cargo test --all-featurespasses (including bash comparison tests)cargo fmt --checkcleancargo clippy --all-targets --all-features -- -D warningsclean