sweep — Workspace Hygiene & Clean-Purge Engine

Operating Invariants

Pre-Mutation Gate: Stage all candidate deletions in the Canonical Output Contract and halt for affirmative authorization before deleting files.
Active Work Preservation: Purge exclusively verified completed artifacts; preserve plan dossiers in .agents/scratch/plans/ containing active phases (PLANNED, CLAIMED, IN_PROGRESS, DRIFTED), task collections containing ready or in-progress tasks, dirty worktrees, and unmerged branches.
Targeted Scope: Confine deletions strictly to .agents/scratch/, fully completed .agents/tasks/<feature-slug>/ directories, and merged .agents/worktree/ paths.
Atomic Execution: Execute approved deletions atomically, prune orphaned git administrative metadata via git worktree prune, and report reclaimed status.

Scratch & Dossiers: Temporary scripts (hitl-loop.sh), subagent traces (*-dossier.md), absorbed spike directories, and completed plan dossiers (COMPLETED or REJECTED) in .agents/scratch/.
Completed Task Collections: Feature directories under .agents/tasks/<feature-slug>/ where all contained tasks have Status: done.
Merged Worktrees & Branches: Clean worktrees under .agents/worktree/ and squash-merged local branches verified via scripts/prune-squashed.sh.