bug: parallel edit tool calls on same file will error out

[spoons-and-mirrors]

When doing parallel edits on the same file, opencode will block calls after the 1st saying "Please read the file again before modifying it."

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• claude is reads only file header to handle read-before-write requirement #1348: [claude is reads only file header to handle read-before-write requirement] - Also describes workarounds to bypass the "read file before editing" requirement, showing similar patterns
• write and edit tools return spurious 'cmd must not be empty' error despite successful operations #2255: [write and edit tools return spurious 'cmd must not be empty' error despite successful operations] - Reports edit tool errors and workflow issues with file modification tools

Feel free to ignore if none of these address your specific case.