London | 25-SDC-July | Pezhman Azizi | Sprint 3 | Implement-shell-tools-with-NodeJS#169

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Pezhman-Azizi wants to merge 11 commits intoCodeYourFuture:mainfrom

Pezhman-Azizi:implement-shell-tools

Commits on Sep 21, 2025

cat: scaffold command (placeholder, no behavior yet)
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cat: implement basic file concatenation (no flags)
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cat(ESM): add -n to number all lines (continues across files)
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cat(ESM): add -b to number non-blank lines; -b overrides -n
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ls: scaffold command (placeholder, no behavior yet)
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ls: basic listing (no flags) — excludes dotfiles, one-per-line, multi-path headers
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ls: add -a (include dotfiles) and accept -1 (one-per-line)
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wc: scaffold command (placeholder, no behavior yet)
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wc: implement single-file counts (lines, words, bytes) — no flags
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wc: support multiple files and print grand total (no flags)
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wc: add flags -l (lines), -w (words), -c (bytes) with multi-file totals
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