W10 lane retire — todlando, 2026-09-25. fix/341-busy-window-axis landed as main 11a2f373 (doyle ff, PR #277, run 36089481863 6/6).

POOL: .worktrees/w10-busy/target (the worktree's own default target).
Release: prebuilt xtask (the scratchpad copy of main's target/debug/xtask.exe) `pool-release --pool target` -> "pool target released".
Processes running FROM the pool before teardown: 0.

WRITER CENSUS, read BEFORE rm (2026-09-25T03:33:47Z): rust-analyzer.exe 50072, rust-analyzer.exe 37184.
  No cargo, rustc, nextest, link or Runner.Worker.
OUTBOUND: Get-Item -Force target -> Directory (real dir, not a junction). INBOUND: 0 reparse points under .worktrees targeting w10-busy.

THREE NUMBERS (measure 03:34:04Z, before rm):
  apparent  (du -sb --apparent-size): 21,692,691,421 B
  allocated (du -sB1):                21,743,603,712 B
  escaped hard links (per-inode):     0 inodes, 0 B
  expected reclaim = 21,743,603,712 B

FREE SPACE (C:):
  before 03:35:28Z: 108,893,917,184 B
  rm -rf target rc 0; target absent
  after  03:35:39Z: 130,627,379,200 B
  delta: 21,733,462,016 B; gap vs expected: 10,141,696 B LESS freed (~0.05%).
  UNEXPLAINED, no mechanism assigned (only rust-analyzer was live).

WORKTREE: `git worktree remove` (run from the project root) removed the registration. The empty dir was refused ("Permission denied", then
  rmdir "Device or resource busy"): the same pin as W7 (the session's own cwd). Retry once the cwd moves.

LANE NOTES: my first busy_window_axis_e2e leaked detached daemon+brain pairs from this pool (7 PIDs killed by exe path over
  the lane). Fixed in-lane with a StopDaemonOnDrop that stops with no session identity. The general api-autostart leak and
  the HEAVY detector gap are hertz's IR-156.
  UPDATE 03:36Z: once the session cwd moved off it, rmdir succeeded; dir absent; git worktree list has no w10-busy.