Merge pull request #4062 from danzaio/fix/windows-log-without-standard-handles

fix(relinker): log Windows output when standard handles are missing

docs/user/USAGE.md

@@ -108,6 +108,8 @@ Windows PowerShell:
 .\app.exe
 ```
 
+A Windows executable started without a standard output or error handle, such as a `--windows-gui` build started from Explorer, writes that output to `anyps5.log` beside it, replacing the previous run's file. Without write access to that directory it runs without the log.
+
 ### Controller input for test runs
 
 Set `APS5_PAD_INPUT_FILE` to an absolute path before launching the application to enable controller pulses from a local command file. Once the application is reading controller input, send a button with the helper from the repository root: