Status: Complete Indonesian course release. It contains the complete twenty-chapter Petrunin reader; the complete six-unit, independently authored transformation/invariant/model-surface companion; worked solutions and mastery support for all twenty source chapters and all six companion units; the complete offline semantic HTML/EPUB reader; four cumulative checks; and two cross-geometry capstones. The compact source/backend archives are built from explicit allowlists, with local paths normalized and raw logs, generated QA evidence, credentials, and excluded assets omitted. The separately licensed Clemens/Snapp advanced geometry workbook is packaged independently and is not included in this CC BY-SA record.Authority: working-source commit 0b0858e1e985f4c8dadbb6075ae9e095cd4a8981, tree 4c931765feb8e83b77b079e618b994a74efa5cf3, with arXiv 1302.1630v25 retained as the labeled publication witness. This is an independent derivative and independent companion/solutions work; no endorsement by the source author is implied.License: Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0). Component notices and exclusions in the manifest remain controlling.Production assistance: OpenAI Codex gpt-5.6-sol, Ultra.