Remove guard-bypass trick and machine-specific QUARTO_R path (Closes #4166)

[dem-extra1]

Closes #4166.

Removes the two items that #4138's review findings asked to remove and that merged anyway:

• memories/antigravity.md: drops the "Unchained ALLOW_UNREVIEWED_PUSH=1 prefix in Windows PowerShell" entry, which taught a PowerShell function trick that satisfies no-push-without-self-review.py's override parser without a real env prefix. The supported env ALLOW_UNREVIEWED_PUSH=1 git push form, documented a few bullets earlier, is unchanged.
• memories/r-quarto.md: replaces the hardcoded R-4.5.1 QUARTO_R path with a pointer to quarto-sites.md's os-error-232 section, which already says machine-specific QUARTO_R paths belong in a machine's own project memory.

Check: git grep -n "New-Item -Path function\|R-4\.5\.1" returns nothing; scripts/check-links.py reports no broken links. Pre-push adversarial review (sonnet): Ready, 0 findings, at 4f5ad83.

🤖 Generated with Claude Code

[github-actions]

Claude finished review — View run

---

Everything checks out: the net diff against current main (origin/main...a5ac4a3) is identical in content to the commit the prior round reviewed (4f5ad83) — same two files, same 3 insertions / 10 deletions. The intervening commits on this branch (a45b7ba, 419f5f8, a5ac4a3) are pure sync-with-main merges; memories/preferences.md and memories/quarto-sites.md appear in the commit-range diff only because that content landed on main via #4134 and was pulled in by the merge, not because this PR changed them. I independently re-verified both claims from the prior review still hold: the referenced heading `Rscript pipe is being closed (os error 232)` from Quarto means read the full log for the missing-package message exists verbatim in memories/quarto-sites.md:598, scripts/check-links.py reports no broken relative links, and git grep finds no remaining references to the removed PowerShell bypass trick or the hardcoded R-4.5.1 path anywhere in the repo.

This is a confirming review. The prior verdict from the 2026-10-01T05:57:17Z review (Ready for merge, CLEAN) still stands — nothing in the diff content has changed since that round.

Verdict

Ready for merge

Structured Review Data (JSON)

{
  "schema_version": "1.1",
  "reviewer": "claude",
  "commit_sha": "a5ac4a3ab1a685396e5d0c910d73ed095d9bb733",
  "verdict": "CLEAN",
  "findings": [],
  "detailed_assessment": "Diffed origin/main against the current head and confirmed the only changed files are memories/antigravity.md and memories/r-quarto.md, matching the previously reviewed commit 4f5ad83 exactly; the intervening merge commits brought no new net content into the PR.",
  "holistic_assessment": "Scope still matches issue 4166, the referenced quarto-sites.md heading exists verbatim, check-links.py and git grep both reproduce clean, and no regression risk exists since the branch only re-synced with main without altering its own content."
}

Reviewed commit: 419f5f8

[github-actions]

💰 Cost: $0.3532 (review) — run