ARK 039D / 0.9.40 - Local memory and Windows setup

Superseded by 040D / 0.9.41. This preview has an oversized synthetic memory call ID that can stop Responses startup with HTTP 400 string_above_max_length; 040D repairs that protocol defect.

Windows x64 preview with a ready-to-run installer and portable ZIP.

• ARK-039D-windows-x64-setup.exe: existing ARK logo, choose a destination, automatic per-user runtime installation and shortcuts. Includes the local memory model; no memory-service account or API key is needed.
• ark-windows-x64-0.9.40.zip: extract the complete archive and run ARK.cmd.
• SHA256SUMS.txt and the provenance/verification receipts identify the exact published bytes.

039D adds persistent native agent memory inspired by memXT: offline multilingual semantic and literal recall, project/shared knowledge, episodic promotion, feedback, consolidation and bounded-loss q4 vector compression. Coding and CAD agents use the same memory contracts. Graphify and verified Obsidian views remain connected through explicit source anchors. Historical memory grants no CAD edit or geometry authority.

The six original UI images are bundled as binary assets/ark-ui.arklib. Native loft/shell construction, retained onboarding and revision-safe recovery are included from 038B.

Final local checks: 98 core, 143 native and six selected Studio tests passed. A relocated package passed actual semantic restart/q4/isolation, exact native box/save/reopen/STEP and packed-only UI checks. Isolated fresh install and 038B→039D upgrade/reinstall/activation/manual rollback/uninstall passed with protected file and shortcut sentinels.

The fixed small semantic pilot achieved EN 4/4 and PT 2/3 top1; one Portuguese target ranked second. No matched real-agent token/cost saving or general design-quality result is claimed. The setup is unsigned. Its artwork and actual control layout were verified; full wizard pixel capture was unavailable. Clean-machine/user pilots and a trusted in-app Internet update feed remain separate gates. The existing Linux 032D preview is unchanged.

See docs/iterations/039D.md and docs/verification-039D.json at this release tag for the exact scope, model pins, package hashes and remaining gates. ARK source is Apache-2.0; bundled dependencies retain their own included terms.