Fix breadcrumbs in process-isolated hosts

[PrzemyslawKlys]

Summary

• use Environment.ProcessId for .NET 8 breadcrumb records so disabled or enabled breadcrumbs do not bind System.Diagnostics.Process
• retain the existing Process.GetCurrentProcess().Id fallback for net472 and netstandard2.0
• add an isolated assembly-load regression that rejects System.Diagnostics.Process, writes to a task-owned temporary breadcrumb file, verifies the PID, and cleans up
• advance the core NuGet package version to 1.1.2

Why

The Website secure-share inspector runs FileInspectorX under systemd with ProtectProc=invisible and ProcSubset=pid. FileInspectorX 1.1.1 could fail before the disabled breadcrumb guard because the CLR had to bind System.Diagnostics.Process while compiling Breadcrumbs.Write. The worker then rejected a benign upload even though the file and inspection logic were valid.

This fixes the reusable FileInspectorX owner and keeps the Website integration as a thin package consumer. The process-isolation protections stay enabled.

Validation

• the new regression failed on the old implementation with FileNotFoundException: System.Diagnostics.Process and passes after the change
• full release suite: 1,226 net8 tests, 1,204 net472 tests, and 15 Magika tests passed
• packed and inspected FileInspectorX.1.1.2.nupkg locally
• the package's fixed net8 assembly returned Allow inside the unchanged hardened Linux Website worker with ProtectProc=invisible and ProcSubset=pid
• independent local review found one test-hermeticity issue; it was fixed and the targeted confirmation found no remaining actionable P0-P2 issues

Release ordering

1. Merge this owner change after current-head CI and review settle.
2. Publish FileInspectorX 1.1.2 only through the separately authorized NuGet release step.
3. Repin Website to the published three-part package version, deploy, and rerun its secure-share acceptance matrix.

The NuGet package has not been uploaded or published by this PR.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-01T08:17:14.767353Z	5f16e3c	PR opened

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