68bcfdac3e
Continue the W1 native-host restructure (plan §W1, steps 4+5). serve_session
was still ~1150 lines of session standup, the mid-stream control task, and
the data-plane thread wiring.
- native/control.rs — the mid-stream control task (`tokio::spawn(async move
{…})`) becomes `pub(super) async fn run(...)`: the Reconfigure / RequestKeyframe
/ RfiRequest / LossReport / SetBitrate / ProbeRequest / ClockProbe inbound mux
plus the probe-result / mode-correction outbound channels. Call site is now
`tokio::spawn(control::run(...))`.
- native/stream.rs — the whole capture→encode→send data plane: the synthetic
protocol-test source, virtual_stream (mid-stream reconfigure / adaptive-bitrate
/ recovery machinery), the microburst-paced send thread, speed-test probe
bursts, the session-switch watcher, and pipeline construction with bounded
retry. Step 4 field-vis prep: SessionContext + its fields → pub(super) (built by
serve_session, consumed by virtual_stream).
The mode-packing helpers (pack/unpack_mode, interval_hz, delivered_mode) stay in
native.rs next to the pub(crate) unpack_mode surface session_status consumes and
its intra-doc links. native.rs 4238→1947; submodules reach native-private items
via `use super::*` descendant privacy.
Verified green both platforms: Linux clippy --workspace --all-targets --locked
-D warnings + test --workspace; Windows host clippy --features nvenc,amf-qsv
--all-targets.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>