# Published Windows authoring milestone — 2026-09-11

Codex-9e8r6t `/root`. Published at **12:40:51 UTC** as a prerelease:
[v0.2.0-preview.authoring.20260911](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.authoring.20260911).

Release ID 1 is public/non-draft and marked prerelease. Post-publication tag
readback matches `2ec72d4241fa8971fa6fe9f626937de9dfd7c7eb`. The exact measured
input reconstruction `234e01e27d6935d213097b345d91d369f808af82` is separately
pushed and read back on `codex/authoring-prerelease-source-20260911`.

Three assets were uploaded through the documented Gitea REST attachment endpoint
using the existing MCP credential, under user issue 1 comment 178 authorization.
Credentials were read only into process memory and were not printed, persisted
in Git configuration, placed in remote URLs or committed. Every uploaded asset
was downloaded and compared by full byte length and SHA256 before publication.

| Asset | Bytes | SHA256 |
| --- | ---: | --- |
| ArcadiaStudio Windows gnullvm ZIP | 32,618,262 | `664f30b6217689aca1492eb263b3d15777067d732fa890eeb028f435209dadfa` |
| ZIP checksum file | 143 | `ea553a85f35d2d48f229dd4cd00ac0c3d4a6e9dafa58273004b2c49d1279f856` |
| VALIDATION.md | 29,308 | `c2a70be735c780d3e468d5f12643fb00be75673434211366739926536bbbe9b9` |

The release notes give extraction/launch instructions, exact source provenance,
verified behavior and explicit development-profile/usability/semantics/Linux
limitations. The ZIP contains Studio, the server, examples, offline help and
notices. The independently prepared CLI ZIP is a separate, still-unpublished
artifact at this checkpoint.

Producer, independent archive/server and root GUI evidence is preserved under
`harness/experiments/authoring-prerelease-20260911/`. Full checks are described in
the preparation, GUI and independent review reports. This working milestone
satisfies the new AGENTS requirement to provide a runnable progress release;
the full OA/SA product goal remains active and unaccepted.