Development record

Merged branches and spent worktrees pile up because nothing removes them: by the close of 2026-10-12 the checkout held 137 local branches (83 already merged into main), 94 worktrees and 4 merged remote branches, and a person had to ask for the cleanup by hand. The person asked (2026-10-13) that a future drain and similar runs do this automatically. Done by hand that day with a read-only inventory (merged into origin/main, contained in a kept branch, PR state, worktree clean, local-tier file count) and a dry run before acting: 92 local branches, 40 worktrees and 4 remote branches removed, every worktree's local tier archived first. Draft itd-118 (merged work leaves no residue) and planned itd-2609091014076309 (the worktree store and its reclaim) describe the want; neither runs at the end of a drain or a cut.