chore(r2-12): U-6 husk dirs already absent in worktree — no deletion needed (07/U-6)

The 5 Driver.Historian.Wonderware* husks are untracked bin/obj build artifacts
(0 tracked files; absent from slnx). A fresh worktree carries no untracked files,
so there is nothing to rm. Only tracked Wonderware residue is the intentional
retired doc stub + closed-review findings.md (kept). Deviation recorded in plan.

archreview/plans/R2-12-repo-hygiene-plan.md

@@ -545,3 +545,19 @@ Expected: build + tests green, all hygiene assertions empty/clean. Update
 `archreview/plans/STATUS.md` marking R2-12 items done (U-9 was already marked).
 
 **Overall effort: Small (~half a day; +up to 2 h only if C-4 Branch A opens).**
+
+---
+
+## Execution deviations (R2-12)
+
+Recorded during execution on branch `r2/12-repo-hygiene` (off master `1676c8f4`).
+
+- **T3b (U-6, Wonderware husk dirs) — nothing to delete in this worktree; end state already correct.**
+  The 5 `Driver.Historian.Wonderware*` husk directories the plan targets are untracked
+  `bin/`+`obj/` build artifacts that lived in the *main checkout*. A fresh git worktree does not
+  carry untracked files, so `find . -type d -iname '*Wonderware*'` here returns only the tracked
+  `code-reviews/Driver.Historian.Wonderware{,.Client,.Client.Contracts}/findings.md` history (KEEP,
+  per plan). Proof: `git ls-files src/…/Wonderware* tests/…/Wonderware*` → 0; slnx grep → exit 1;
+  no husk dirs on disk. No `rm -rf` was needed and no commit results. (The husks, if present in the
+  main checkout, are harmless ignored build output and will be reaped by a normal `git clean`/rebuild
+  there; they were never in VCS.)