Keep the raw Page rejection on its streaming entry point while the server
holds the body, without racing a 100ms response-header budget.
Move the body-specific deadline case to prepared streaming headers and the
real body materializer. Retain the 100ms budget and typed body phase, and
assert transfer cancellation and channel release.
Apply one absolute deadline across response headers, streaming raw bodies, page creation, and later readiness waits. Report the active timeout phase without extending the caller's budget and reject raw documents from Page APIs before an unusable body can stall.
Give CLI fetch failures a stable two-line Error/Reason presentation while retaining full anyhow chains for non-fetch failures, including raw-document page-wait errors.
ldm0