Phase S steps 9-10. Makes qbz-Slint a QConnect renderer: SlintRendererEngine
implements qconnect_app::QconnectRendererEngine over runtime.core(), so the Slint
frontend inherits the shared echo/cursor/materialize/shuffle orchestration in
qconnect_app::renderer instead of re-deriving it.
- Deps added to qbz-slint: qconnect-app, explicit qbz-player, futures-util, uuid.
- 16 trait forwards through runtime.core() (CoreError mapped to String) +
current_output_format reading player().state.
- start_track_stream + the HTTP feeder (probe FLAC -> play_streaming_dynamic,
fallback download -> play_data) ported from the Tauri CoreBridge impl. The
protected bit-perfect seams are only called, never modified; the probe-derived
sample_rate/channels/bit_depth flow straight through.
- TLS deviation: the crates-workspace reqwest ships rustls-tls (not native-tls),
so .use_native_tls() is dropped. TLS is transport-only; audio bytes identical.
allow(dead_code) until the Slint QConnect service + event sink wire it (next
Phase S step). Verified: cargo check -p qbz-slint green (only a pre-existing
unrelated rename_folder dead-code warning).
cc
vicrodh
88e72c3e61