pr head: 0176b6600f67f88ec62bd2e15776f49d70a7f995

main reproduction
github/main 30084f0018: Settings > Worktrees > .claude/worktrees > New worktree > Submit
Result: Workspace preparation failed: location must be an absolute folder

pr worktrees created by web client and real Codex gpt-6.1-sol turns
worktree /home/user/worktree-verification
HEAD 2c9b2aad345ea1668c24015a1ff5c61210918b11
branch refs/heads/main

worktree /home/user/t3code/.t3/worktrees/worktree-verification/t3-1587963e
HEAD 2c9b2aad345ea1668c24015a1ff5c61210918b11
branch refs/heads/t3/verify-default-worktree-placement

worktree /home/user/worktree-verification/.claude/worktrees/t3-c01f9d15
HEAD 2c9b2aad345ea1668c24015a1ff5c61210918b11
branch refs/heads/t3/verify-relative-worktree


relative turn and continuation after resetting setting
relative-worktree-ok
reset-setting-ok

default worktree turn after reset
default-worktree-ok

local ignore rule
.git/info/exclude:7:/.claude/worktrees/	.claude/worktrees

parent status and index after git add -A (both empty)

focused Blacksmith checks
485 tests passed across 5 files