Infrastructure: Restore Storybook stories excluded by native desktop crashes #4344

Goal

Restore native Storybook coverage currently excluded because of desktop-host fail-fast crashes. Parent: #4275. Bug follow-up to the delivered endpoint/pipeline milestones #4259/#4256.

Observed state - 2026-10-01

The app's checked-in platform patterns deliberately exclude:

The Storybook README documents native fail-fast termination (0xc0000409) as the reason. Current main manifests contain 168 macOS, 158 Windows, and 152 Win32 stories; exclusions are real missing coverage, not equivalent catalogs.

This audit verified source/configuration and generated catalogs, not a new interactive reproduction of each crash. Reproduce against the current resolved forks before attributing a root cause; do not infer that an old runtime diagnosis still explains every endpoint.

Reproduction

On the affected native endpoint, create a minimal isolated fixture or deliberately scoped local catalog for one excluded module at a time. Use the supported yarn storybook ... --<platform> lifecycle from apps/storybook, preserve exact process identity, and retain the first actionable native failure and story ID. Do not remove all exclusions from the normal PR lane before safe per-module qualification.

Acceptance criteria

• Record a current minimal reproduction, resolved runtime/renderer/OS, first failing story, and native termination/error evidence for each excluded module/endpoint.
• Fix or consume the owning native/runtime repair without suppressing the crash, replacing the native endpoint, or claiming a render-only proxy as coverage.
• Add a regression that detects application termination as a failure and exercises the affected behavior, including delayed focus survival where relevant.
• Remove each platform exclusion only after its native story cohort passes the full owned traversal/tests and cleanup on that endpoint.
• Manifest/index checks and documentation accurately distinguish any remaining justified exclusions; require a linked issue and reason for each.
• Windows/Win32 remain separate Fabric/Paper endpoints, other platforms preserve behavior, and native/package checks and necessary changesets pass.

Coordination

Restoring Accordion coverage unblocks the original focus-survival and accessibility cohorts (#4347/#4343). Coordinate #4349 for required-pipeline qualification. Native package/component fixes may also relate to #3971/#4274, but those broader issues do not currently track these exact catalog exclusions.