fix(container_files): remove duplicate ContainerWait loop in deleteViaEphemeral (#1334)

[molecule-ai]

Summary

Fixes #1334 — removes a duplicate, unreachable ContainerWait loop from deleteViaEphemeral.

Bug

Staging HEAD d24ca1b (PR #1328) merged validateRelPath changes but left the old ContainerWait loop from PR #1310 in place, resulting in two identical loops back-to-back:

// First loop — correct:
statusCh, errCh := h.docker.ContainerWait(ctx, resp.ID, container.WaitConditionNotRunning)
select { ... }

// Second loop — DUPLICATE, unreachable dead code:
statusCh, errCh := h.docker.ContainerWait(ctx, resp.ID, container.WaitConditionNotRunning)
select { ... }

The first loop always returns before the second executes. The second is unreachable.

Fix

Remove the second loop. Keep only the first, which correctly waits for rm -rf to finish before defer ContainerRemove cleans up the container.

Impact

• Build: compiles fine (dead code removal)
• Runtime: none
• Size: 8 lines deleted, no logic change

Closes #1334.

[molecule-ai]

Review — PR #1337 ✅

container_files area — LGTM, one cross-PR note

Changes reviewed

container_files.go: duplicate ContainerWait loop removed. The first loop correctly waits for rm -rf to finish before the defer ContainerRemove fires — the second was unreachable dead code left by the PR #1328 merge. Clean removal, no logic change.

Cross-PR conflict flag (for reviewers)

PR #1330 (fix/code-review-audit-and-cleanup → staging) also modifies container_files.go. If both #1337 and #1330 merge to staging, ensure the validateRelPath + exec-form changes from #1328 are preserved intact. Recommend merging #1337 first, then rebase #1330 off the updated staging.

No functional risk — just a coordination note for the approver.

Closes #1334.