CHRON-2026-05-17-A: Founding Essay Plato Provenance Review

What Happened

Codex reviewed the founding essay package after DEC-0028 restored the strict meaning of in_corpus: true. LIB-0253 (Plato: Complete Works) remains a valid physical-library source for the essay, but it does not have exact, manifest-backed corpus membership. Its corpus relationship is proxy coverage: CORPUS-010 is Jowett's Republic, not an ingest of the Cooper Complete Works volume.

The published essay text did not require wording changes. It mentions Plato, the pharmakon of writing, and the project's AI-assisted processing of the spiritual corpus, but it does not say that LIB-0253 itself was scanned, chunked, embedded, or otherwise exact-ingested. The risk was metadata-level ambiguity, not prose overstatement.

Site Impact

The canonical founding essay remains live at /about.
The essay package now records that LIB-0253 is a physical-library source with proxy corpus coverage only.
No public-facing copy changed; the update protects internal provenance, cascade logic, and future editorial reviews from treating proxy coverage as exact corpus access.

Files and Commits

content/specials/ep-00-founding-essay/essay.yaml
content/specials/ep-00-founding-essay/metadata.yaml
kb/library/books/LIB-0253_plato_plato-complete-works.md
project-log/decisions/DEC-0028_exact-corpus-membership-and-proxy-coverage.md
corpus/_lib-mapping.yaml
Prompt relay: PR-0182
Commit: pending at time of entry

Follow-Up

The broader April-May website-log catch-up should include this provenance closure when normalizing the PR-0183 chronicle and deciding whether a new site snapshot is warranted.