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

This same-concept compact successor preserves 64 files from version 10.5281/zenodo.21637870 byte-identically, refreshes the three release controls, and adds a bounded SGA3 Expose XXIII working checkpoint as a direct reader, direct editable master TeX, and grouped source/QA ZIP. SGA1 remains the default preview. The new 37-page A4 reader covers complete Expose XXIII only: Polo-Gille authority local pages 1-37 / combined-reader pages 1209-1245, with a hard stop before Expose XXIV local page 1 / combined-reader page 1246. It has 227 named destinations, 58 valid internal GoTo actions, zero invalid or external actions, 36 font resources, no Type3 fonts, and no raster XObjects. The complete editable closure has 14 TeX files and exactly one native tikz-cd diagram, with zero includegraphics calls. Direct 5000-dpi authority comparison found four label-side placement errors in the first native version; the session lead corrected all four and signed the included review receipt. Existing 600-dpi page evidence remains legitimate context history, but the diagram-fidelity decision rests on the direct 5000-dpi comparison. No authority pixels, high-resolution crops, or raster diagram are redistributed. Three producer and three independent XeLaTeX passes completed. The producer and independent outputs match on all 37 extracted-text pages, all 37 decoded page-content streams, page geometry, destinations, links, and normalized font resources. All 37 producer/rebuild 200-dpi render pairs are byte-identical and all pages were visually reviewed. The existing 1,182-page SGA3 current-progress cumulative reader remains directly available as readable history, but it is not reissued here: its older raster-bearing components do not satisfy the current native-diagram delivery rule. The new standalone XXIII checkpoint fills one reading gap without claiming that the cumulative file, SGA3 as a whole, or every earlier diagram is finally certified. The controlling witness is Polo-Gille Exp23-13oct24.pdf, 37 pages, SHA-256 8C3F94D256B151C68EA8765EEC13812FE079E90B3A18C649B939B023E77DA12F. It is not redistributed. Floris's pre-existing GPU OCR was consulted read-only as locator or drafting evidence and was not regenerated. Jacob C. Reinhold's jcreinhold/sga English lineage at revision e7a259f3f8608ad3edf9bf6eead3fd504dd2d23e is credited comparison material, not source authority; its stated CC BY 4.0 applies only to that contribution. This package is a bounded scholarly working reader, not complete SGA3, a critical edition, exhaustive reference-v2 certification, rights clearance, mathematical certification, peer review, or tagged-PDF accessibility remediation. No blanket license or transfer of underlying rights is asserted. Machine-assisted contributors include OpenAI Codex / ChatGPT and Anthropic Claude under human direction.