🐛 Keep parallel task groups from clobbering shared progress files - #5
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…aves Executors running concurrently all edit tasks.md (checkboxes) and agents-context/ (concept files + README) — files outside any plan's disjoint File operations list. Concurrent writes could clobber each other, and per-plan staging could orphan the bookkeeping from the group's atomic commit. Fix: when a wave holds 2+ groups, each executor's prompt gets a parallel-wave addendum forbidding writes to tasks.md and agents-context/. The executor instead reports completed tasks and proposed context updates in plans/group-N-updates.md; the orchestrator applies that file at commit time and stages it with the group, so every group's commit still carries its own checkboxes and context updates. The implementation-reviewer checks the updates file for wave groups. Sequential execution is unchanged. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Follow-up to #4.
✨ What's New
🧪 Test Plan
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