docs(lineage): three §3a rows from the 2026-09-09 harvest, the Zoekt row updated, and readmedriftcheck E2b — every README copy of the pair must agree

[joyful-ii-V-I]

The last landing of the 2026-09-09 harvest round. Documentation only — no gate added, no source touched.

Three §3a rows for the repositories this round studied: tgrep, codeburn, markitdown. Each row records what was taken and what was refuted, which is the point of the ledger — a tool that gave a lesson is named, and so is one that gave none.

The Zoekt row was stale and is brought up to date.

43 → 46 repositories, derived at all nine spellings. readmedriftcheck arm E1 counts the §3a body rows and re-derives every published spelling against that count — README's pair, the "46 folded plus 237 surveyed" restatement, the wrapped second number in that same sentence, LINEAGE's bold header triple, and both of the deck's long and short forms. E6 proves §3a and §3b stay disjoint with a planted control, so the folded and surveyed sets add rather than nest. E8 proves all 88 cited paths exist on the tree — which is why this lane could not land until tgrep's files were on main.

A new arm, and the reason it exists. While deriving the nine spellings, the lane found a site its own gate did not cover: README.md carries the lineage pair twice (lines 21 and 1648) and E2 read only the first. It reported that as hand-checked rather than shipping it under a green E2 — eight of nine derived, one named as not.

E2b now takes sort -u over every <M> repositories and <P> papers match and asserts a single distinct pair, reporting the copy count without pinning it, so a future third copy that disagrees also fails. E2c is the control, and it is the part worth having: it mutates only the second copy and requires (E2) to stay green while (E2b) goes red — reproducing the old blindness rather than merely proving the new arm fires. Observed red from bash both ways.

---

Verified before landing: tip contains current main; CI run 34407178796 26/26 green on the exact tip; gate count 569, main's own and untouched — this lane adds no gate; lineage count derived on the final tip, not carried; qschemetripcheck green so untouched; ripwirepubliccheck arms 1/2/5 clean.

The rebase over #77 stopped once, on present/deck5_ripwire_build.js, where #77's gate-count line sits adjacent to this lane's lineage line. Resolved by keeping both claims with both instruments beside them:

["569 gate scripts",                   "bash test/manifestcheck.sh"],
["46 repos · 69 papers · 237 surveyed","bash test/readmedriftcheck.sh"],

Closes the harvest round's four landings: codeburn (#79), githarden + textdocs (#80), tgrep (a2973177) and this.

🤖 Generated with Claude Code

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: 8383dd8b-f5c2-44e5-9332-0ca05797729a

📥 Commits

Reviewing files that changed from the base of the PR and between 481e36f and 4f35d1c.

📒 Files selected for processing (4)

• README.md
• docs/LINEAGE.md
• present/deck5_ripwire_build.js
• test/readmedriftcheck.sh

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to Reviews -> Disable Knowledge Base setting

---

📝 Summary

Summary by CodeRabbit

• Documentation

  • Updated the reported research lineage from 43 to 46 folded repositories across the README, lineage documentation, and presentation materials.
  • Added entries for tgrep, codeburn, and markitdown.
  • Revised the Zoekt description to reflect its current trigram-based regex prefilter and indexing approach.

• Tests

  • Added checks to detect inconsistent repository and paper counts across repeated README references.

Walkthrough

The change updates repository lineage counts from 43 to 46 across documentation and presentation text. It expands lineage entries for three repositories, revises the Zoekt description, and adds checks for inconsistent repeated README counts.

Changes

Lineage count and validation

Layer / File(s)	Summary
Synchronize repository counts README.md, docs/LINEAGE.md, present/deck5_ripwire_build.js	The README, lineage document, and research slides now state 46 folded repositories.
Update lineage evidence docs/LINEAGE.md	The Zoekt description was revised. New tgrep, codeburn, and markitdown rows were added.
Validate repeated README pairs test/readmedriftcheck.sh	The drift check compares every repository-and-paper pair and tests detection of a changed second copy.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: andriytyurnikov, mfreeman451, quaterniondrift

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch lane/harvest-lineage-2026-09-09

---

_{Comment @coderabbitai help to get the list of available commands.}