b21 launch-4 — Cross-link grid (P-1 priority tier)#

Mode: EDEN
Effort: Max
Run order: 4 of 7 in the b21 launch-sprint sub-prompt set.
Status of upstream: P-1 tier of the cross-link grid scoped
in b20 review llog
§7-2 + §5.4. Extends the 3 critical inline links from launch-3.
Drafter: Claude Opus 4.7 Max (dv_ClaOp47Max) at LLoL’s
request on 2026m05d22.

1. Context #

The b20 §5.4 cross-link plan defines three priority tiers:

P-1 (this prompt): launch-critical links between the highest-traffic papers.
P-2 (launch-7): full N×N grid across b11–b21.
P-3 (launch-7): b18-esc variants + b21 (AI framework) to all other papers.

This prompt covers P-1 only. The criterion for P-1 inclusion: a sympathetic reader landing on any P-1 paper should be one click away from the others on the same tier.

The 3 critical inline cross-links from launch-3 are a subset of P-1; the rest of P-1 fills in the surrounding grid.

2. P-1 link list #

Add the following :doc: cross-links. The format is from-paper → target.

For each target paper:

Add a “Related papers in the Matheo series” subsection in the SI or Appendix (or wherever the paper’s existing cross-reference block lives). Format as a short RST list with :doc: links + one-line descriptions of each linked paper.
Where the target is already discussed inline in the paper’s main text, also add an inline :doc: link on the first mention (similar to launch-3’s L-B18A-3, L-B18A-4 inserts).

b11 (PET):

→ Matheo overview (/study/matheo/index)
→ b18a (Call to Action) [paper that builds on PET]
→ b19 (SGIR) [paper that applies PET-adjacent thinking]

b18a (Call to Action):

→ Matheo overview (/study/matheo/index)
→ AuditTheMath landing (/action/audit-the-math/index)
→ dung-beetle post (/blog/posts/2026-05-21-prophetic-dung-beetle)
→ b11 (PET) [foundational]
→ b19 (SGIR) [concrete example]
→ b18a appendix (Nobody’s Job)

(coordination: launch-3 may have already added a subset of these inline; this prompt adds the remaining + the SI subsection.)

b19 (SGIR pandemic paper):

→ Matheo overview (/study/matheo/index)
→ AuditTheMath landing (/action/audit-the-math/index)
→ b18a (Call to Action) [policy-action partner]
→ b21 (AI co-authorship framework) [used by this paper]

Matheo overview (source/study/matheo/index.rst):

→ Already cross-links to AuditTheMath + Buy-In per b20 §9.
Verify these are still present after launch-1; add b18a + b19 entries with one-line descriptions if not present.

AuditTheMath landing:

→ Already cross-links to Matheo overview + Buy-In + dung-beetle per b20 §9.
No additions needed; verify still present.

3. Tasks #

3.1 For each target paper, in order: b11 → b18a → b19 #

Locate the paper’s SI / Appendix section.
Add (or update) a “Related papers in the Matheo series” subsection. Suggested heading text:

Related papers in the Matheo series
Populate the subsection with a list of :doc: links per §2 above. One-line description for each link, e.g.:

- :doc:`Matheo-b11 (PET) </matheology/hell/mm/b/11/…>` — the Pan-En-Theology core axioms paper.
Where the paper’s main text mentions the linked target by name on first occurrence, add an inline :doc: link. Use the L-B18A-3 / L-B18A-4 / L-B18A-5 patterns from b20 §5.4 as template.

3.2 Test #

After all P-1 links are inserted:

make dev from repo root.
0 new warnings introduced.
Click-through each new link in HTML build.
For each paper, verify the new “Related papers” subsection is in the table of contents at the correct level (likely h2 or h3 inside SI / Appendix).

3.3 Cross-check #

The P-1 grid is symmetric in principle (if b11 → b18a, then b18a → b11 should also exist). After all insertions, verify symmetry. Asymmetries: report in llog, do NOT force-fix in this session.

4. Out of scope #

P-2 tier (full N×N grid across b11–b21) — launch-7.
P-3 tier (b18-esc + b21) — launch-7.
The 3 critical inline links from launch-3 (already added by launch-3; this prompt only adds the surrounding grid).
Any paper outside the b11 / b18a / b19 set in this prompt’s scope.
Rewriting the SI / Appendix structure (TELES-scope insertion of a new subsection only).
Generating one-line descriptions that are aspirational rather than factual — use the paper’s actual title + one factual-tone sentence.

5. Deliverables #

Produce a single new LLog file at source/matheology/hell/ll/infra/b/NN/bNN-launch-4-execution_<date>.rst containing:

For each of the 3 target papers (b11, b18a, b19): file:line of each new link + before/after excerpt of the surrounding context.
Symmetry check report.
Build test result.
Click-through test result.
Concluding summary: which P-1 links are now in place + a pointer to launch-7 for P-2 / P-3 work.

Also update the infra index.

The BABL trap: over-Reaching into P-2 territory. It is tempting to “while I’m here, also add b12 → b13” or “also link b15 → b16” — do not. The P-1 / P-2 / P-3 prioritisation exists to keep this prompt bounded. Drift into P-2 turns this session into the full-grid session, and the launch slips.