Literal string replacement with uniqueness check. Fails if old_string
is not found or matches multiple times (unless replace_all=true).
Matches the Claude Code harness Edit tool so sibling lmcp clients get
the same behaviour they already expect for in-place patches.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
test0r
marfrit