docs: GI A/B verdict — HW is a subtle warm-bounce grade for 30% of the frame

[proggeramlug]

Clouds-off, gate-verified captures (archived in the shooter's tools/.testout): both paths have correct sun shadows; HW GI adds a mildly warmer indirect term (house facade most visibly). A grade-level difference for 14.4-vs-20.3 fps → SW stays the default, BLOOM_HW_GI=1 opts in per box. Re-open for indoor scenes or stronger hardware.

Summary by CodeRabbit

• Documentation
  • Updated the Lumen hardware-versus-software comparison with completed clouds-off test results.
  • Documented shadow quality, visual tone differences, measured frame rates, and screenshot archive locations.
  • Removed the previously unresolved testing note.

[coderabbitai]

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ℹ️ Recent review info

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Review profile: CHILL

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Run ID: a07c9995-9df5-48ca-a4ad-ca5fb27652ed

📥 Commits

Reviewing files that changed from the base of the PR and between ffb7d23 and 9d1523f.

📒 Files selected for processing (1)

• docs/tickets.md

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📝 Walkthrough

Walkthrough

The Lumen ticket documents a completed clouds-off hardware-versus-software A/B test, including shadow correctness, tonal differences, FPS measurements, capture archives, and the recommendation to keep software rendering as the default.

Changes

Lumen measurement documentation

Layer / File(s)	Summary
Record clouds-off A/B results docs/tickets.md	Replaces the unresolved test note with measured shadow behavior, tonal observations, 14.4 versus 20.3 FPS results, archived capture locations, and an “SW stays default; opt in per box” verdict.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• Bloom-Engine/engine#106: Adds a related ticket for wiring and measuring hardware versus software Lumen.
• Bloom-Engine/engine#110: Updates the same measurement documentation with the reported FPS and GI observations.
• Bloom-Engine/engine#111: Replaces the prior unresolved clouds-off A/B guidance with completed test results.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/gi-ab-verdict

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