docs: add photoreal wiki heroes to all pages Embed assets/hero-16x9.jpg on every page. Generated with Grok Build: Grok 4.5 · xAI Imagine (/imagine).
docs: expand NeuroPulse.jl wiki for TemporalFocus @ c9ff99c Document package identity (TemporalFocus under NeuroPulse.jl path), routing API, interop freeze, checkpointing, CI/Documenter, and Grok Build attribution.
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