mirror-readme-md-and-readme-ko-md-1-1

When editing the public README for a release, apply every structural change to BOTH README.md and README.ko.md: same sections in the same order, the same command-table rows in the same order, and the same .agents/ state tree. Korean prose translates the meaning; code, command names, flags, paths, and identifiers stay verbatim English. Before finishing, verify parity: grep -n '^## ' on both files must list the same headings in the same order; the yardlet-command row count must match; and grep -n '—' must return nothing in either file (no em dashes, per the avoid-em-dashes rule). Trace every capability claim to CHANGELOG.md or .agents/memory/; do not invent features.