# Save diagnostics Windows preview validation

The [verified scope, evidence and exact build/run instructions](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/src/commit/e144e32e9984477a258759a9dcc75f6e499fc224/harness/release-save-diagnostics-validation-20261001.md)
are authoritative. This attachment links that immutable release/evidence checkpoint.

Desktop source: 0e83157e09d52e6152df91208e41693b62da2d46.
Unchanged reused server source: 715036e132677dd2bc2fb37ed316d93dc9987aec.
Packaged documentation source: ef28f1784efe6717b0ca72c0eb3c97bc30ebfe47.
Release/evidence checkpoint: e144e32e9984477a258759a9dcc75f6e499fc224.
Windows gnullvm dev/unoptimized builds, debug assertions enabled.

ZIP: 34,191,561 bytes; SHA256
`8b4e353e075f22350a07794ee47a02cf85725501223299cf367134aa1f5b63b7`.

Extract the complete folder and launch `arcadia-studio.exe`, keeping
`libunwind.dll` beside both executables. Read `START-HERE.txt`.
Copy the complete example before editing. Save All updates the loaded source.
Save As preserves includes and needs a fresh source destination; needed
companions/artifacts require separate copying. Protected destination conflicts
now have accurate wording and recovery guidance; genuine observed external edits
retain their external-change diagnosis.

Optional backend in a writable working directory:

```powershell
.\arcadia-server.exe --bind 127.0.0.1:8787 --data-dir C:/ArcadiaModels/server
```

See packaged docs/server.md and docs/api.rst for REST/deployment/authentication.
No remote deployment is claimed.

The unchanged desktop source has 29 targeted save checks, formatting, strict
Clippy, GUI build and independent contribution review. Fresh packaging/extraction
and source identities pass. Two actual extracted desktop processes exercise
Apply, accurate refusal, Save All/fresh Save As recovery, real external-change
protection, fresh reopen and no-op Save All, with complete 37-file byte oracles
and complete 30-file parsed Project/source comparisons. Both desktop processes
exit 0 with empty logs and all 565 package files unchanged. Fresh server testing
passes 23 checks, including exact OpenAPI, Unicode/CRLF, stale 412 and acknowledged
write persistence after an owned forced restart, not graceful/power-loss testing.
Independent artifact/source/native/server/claims review passes for this scope.

This is an unfinished scoped Windows development preview, not the complete
first OA/SA release or the separately owned follow-up union. Dense diagrams,
Scenario adapters, calculations/constraints, maintained libraries and broader
accessibility/DPI remain unfinished. Native testing used one existing account/
machine at 1442×932 with system-only child PATH. No full-suite rerun, second clean
machine, minimum-size package trial or Linux validation is claimed. Linux/WSL
remains user-deferred. Prior releases remain unchanged.