Com.H 10.3.0

• .NETStandard 2.0

  • Microsoft.Bcl.AsyncInterfaces (>= 10.0.10)
  • Microsoft.CSharp (>= 4.7.0)
  • System.Text.Json (>= 10.0.10)

• net10.0

  • No dependencies.

• net8.0

  • No dependencies.

• net9.0

  • No dependencies.

Behaviour changes in Com.H.Shell and Com.H.Pdf. Read this before upgrading if you run
external commands or convert HTML to PDF; nothing else in the library is affected.

* ShellExt.RunCommand no longer throws because a command wrote to standard error. It now
 throws on a non-zero exit code instead. Chromium reports success on stderr, so the old
 rule threw on every successful PDF conversion.
* Both output pipes are drained while the process runs. A child that filled the pipe buffer
 used to block until the timeout expired no matter how quickly it had finished.
* Timeouts now kill the whole process tree instead of leaving it running, and throw
 TimeoutException. Non-zero exits throw the new ShellCommandException, which carries
 ExitCode and both streams.
* PDF conversion now verifies that a non-empty file starting with %PDF- was produced, and
 throws InvalidOperationException when it was not. Chromium can exit zero having written
 nothing. Set ValidatePdfOutput or PdfExtensions.DefaultValidatePdfOutput to false to opt out.
* Any existing output file is deleted before conversion starts, so a failed run can no longer
 be mistaken for a successful one that produced yesterday's file.
* Fixed: tryDeleteInputUriResourceAfterConversion never deleted anything, because it passed a
 file:// URL to File.Delete.

New: async overloads with CancellationToken support across ShellExt, ExternalPdfConverter and
PdfExtensions; ShellExt.RunCommandWithResult for callers that want the exit code without an
exception; ExternalPdfConverter.ConversionTimeoutMs and ValidatePdfOutput, with matching
defaults on PdfExtensions.