SGA 1-6: Compact English Working Readers, Reference-Linked Editions, and Audit Archives

This same-concept successor replaces only the cumulative SGA 3 English I-IV reader, primary editable master, grouped source archive, and release controls with the independently sealed public checkpoint r1. All unrelated SGA files, including the standalone Expose V Loop-2 native-diagram reader, are retained byte-identically; every predecessor version remains immutable. The 266-page reader covers the Editorial Notice, Introduction, and complete Exposes I-IV through the Expose IV bibliography. It has 1,519 named destinations and 1,062 internal GoTo link rectangles. Its convention-v2 machine data records 411 targets, 1,157 candidate occurrences, 611 linked edges, and one disposition for every candidate. The 199-member grouped archive is the exact independently audited payload: 56 editable TeX files, 128 required PNG assets, the reader, rights and provenance notices, reference data, and complete identity controls. The public manifest replays 198/198 self-excluding rows with no extra file; privacy and package validations report zero errors. All 128 PNG hashes already occurred in the predecessor public I-IV archive, so this successor introduces no new source-pixel class. The replacement PDF has text, content streams, geometry, and annotations identical to the predecessor reader; only deterministic creation metadata differs. The standalone 51-page Expose V Loop-2 native-diagram/reference-v2 working reader and its rights-blocked source-witness metadata remain unchanged. SGA 3 is not complete: Exposes VI-XXVI are absent. Exposes I-III retain Loop-1 source-derived PNG diagrams pending later native reconstruction. SGA 3 uses current Polo-Gille PDFs as controlling witnesses; OCR is locator material only. Jacob C. Reinhold's jcreinhold/sga snapshot e7a259f3f8608ad3edf9bf6eead3fd504dd2d23e is credited comparison and drafting lineage, not authority. Reinhold states that his translation contribution is CC BY 4.0; that statement does not license the underlying French work, source-derived visual witnesses, or unrelated contributions. No new license grant is asserted; rights remain with their respective holders. Machine-assisted contributors include OpenAI Codex / ChatGPT and Anthropic Claude under human direction. These are modern working editions and translations, not critical editions, mathematical certifications, independent human peer review, blanket rights determinations, or accessibility certifications. This successor updates only existing SGA concept 10.5281/zenodo.20410947.