Add initial fit and direct wheel zoom with preserved default presentation. Integrate five scoped GuardFix findings and AI generation preselection policy. Exclude Cell experiments and retain five historical guard failures.
Integrate P5-1B through P5-4 shared Core layout, collapse, zoom/pan/fit, company roots and keyboard accessibility. Include React/HTML examples, virtual 20/100/300 employee fixtures, focused checks and the additive data contract.