ONB-05 — Read & annotate the v9 Stable release checklist

Description: Read through the v9 Stable release checklist (docs/react-v9/contributing/stable-release-checklist.md) plus related v9 promotion guidance. Produce annotations focused on motion-specific implications: which checklist gates will be straightforward for motion components, which need adapted patterns (VR tests, isConformant, bundle-size, perf), and which surface implicit motion-specific concerns. Annotations seed PROM-INFRA-09 (motion-specific addendum) and inform CHOR-01 Beta exit criteria.

Why it matters: The UXE drives Group 6 (Stable promotion readiness) in M3. They need baseline fluency in what "Stable" actually means for a v9 package before that work begins. Reading the checklist also surfaces the early questions PROM-INFRA-09 codifies.

• Difficulty: Easy
• Dependencies: ONB-01
• Sequencing: M1 W2
• Pairing: Async; questions raised in the W2 debrief
• Output: Annotations grouped by straightforward / needs adaptation / motion-specific gap

Read docs/react-v9/contributing/stable-release-checklist.md and the related v9 promotion guidance after completing ONB-01. Record annotations grouped as straightforward, needs adaptation, and motion-specific gap, covering the checklist gates and the noted VR tests, isConformant, bundle-size, and performance considerations. Done means the annotations are ready to seed PROM-INFRA-09 and inform CHOR-01 Beta exit criteria.