[GREEN] Desktop acceptance matrix and certification gates

[ksamaschke]

Scoped Behavior Slice

Implement the minimum production change required to make 'Desktop acceptance matrix and certification gates' pass.

Test Command or Verification Path

• Re-run the failing RED verification first.
• Run nearby focused regression coverage after the scoped implementation passes.

Required Evidence Format

• Link passing evidence back to the RED work-item.
• Capture the exact command(s) proving the scope is now green.

Tracking

• Type: work-item
• Phase: green

Parent: #186

[ksamaschke]

Completed as part of merged story #186 in PR #198 (merge commit , implementation commit ). The GREEN slice shipped the desktop acceptance matrix and certification gates now enforced in the release workflow. Closing stale TDD child issue.

[ksamaschke]

Completed as part of merged story #186 in PR #198 (merge commit dbab09b, implementation commit 1b6e788). The GREEN slice shipped the desktop acceptance matrix and certification gates now enforced in the release workflow. Closing stale TDD child issue.