Bug: quickfiler-test-form1-live-form

[drmoisan]

• Work Mode: full-bug

Summary

A live System.Windows.Forms.Form is compiled into the QuickFiler.Test assembly, and a second,
unrelated item of dead production surface exists in ItemViewer.Breadcrumb.cs. Both are test-policy
and design-debt items rather than runtime defects, and both are outside epic #136 child F14's
production file set.

Environment

(not provided in potential file)

Steps to Reproduce

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Expected Behavior

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Actual Behavior

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Logs / Screenshots

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Impact / Severity

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Source

From: docs/features/potential/2026-08-07-quickfiler-test-form1-live-form.md

[drmoisan]

Item 2 of the potential document — the three internal members AttachBreadcrumbMessengerWhenReadyAsync, AttachBreadcrumbMessenger, and BreadcrumbOpenTask in QuickFiler/Viewers/ItemViewer.Breadcrumb.cs — is deferred to the later ItemViewer-owning epic child and is not dropped from tracking. This issue (#491) addresses only Item 1 (the dead QuickFiler.Test.Form1 live-form type).