TASK-029: housekeeping — prune false-positive findings, normalize paths

The spec-alignment-checker iter 1 review wrongly reported the rename as
unimplemented (it had inspected the master branch instead of the merged
TASK-029 worktree). Independent verification by every other reviewer and
by the acceptance-criteria greps confirmed the rename was complete. The
10 false-positive entries (3 critical, 7 major) were removed; remaining
27 entries (6 major, 21 minor) describe real follow-ups. Worktree-absolute
paths were also normalized to repo-relative.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: etr