Upgrade the integration crate and examples to Axum 0.8 and use the native async extractor traits while preserving hemx routing, request, runtime, and effect behavior.
req: axum/002
Add a real browser smoke for the workout exemplar that checks phone and wide viewport hierarchy, thumb-sized primary action, hidden host proof panel, and recovery interactions through hemx runtime.
req: examples/001
req: local/001
req: host/002
Add a runnable phone-first workout example that keeps local workout truth as commands, domain events, and projections, routes export through the host capability boundary, and documents how to open it in the browser.
req: examples/001
req: local/001
req: local/003
req: local/004
req: host/001
req: host/005
slhx agent