# Phase 1.0AU: offline live result-channel feasibility reassessment

Status: `PRIMITIVE_SIGNATURES_COMPLETE_COMPOSITION_AND_RUNTIME_BLOCKED`

Date: 2026-07-29

The current official SDK headers expose the complete source-level vocabulary
needed by the Phase-1.0AT model: `pipe`, `RFFDG`, `fcntl` with `O_NONBLOCK`,
`poll`, `CLOCK_MONOTONIC`, `kill`, and `waitpid` with `WNOHANG`.

No audited official callsite composes that vocabulary into the required
channel. Current shsrv builtin workers use `RFCFDG`, which closes pre-created
descriptors. Its waits are not bounded by one absolute monotonic deadline and
the service has an automatic restart loop. Direct code reuse would violate the
one-shot, no-retry and explicit-supervisor boundaries.

Headers are declarations, not firmware-9.60 runtime evidence. The AT fake
model is not proof of hard preemption, real descriptor cleanup, launch context,
VideoOut ownership or a visible flip. A live or target implementation remains
blocked. The next permitted step is only an offline, target-free canary
contract with a distinct post-result terminal state.