Module preview 

Camera preview lifecycle (M-CAM.2 / AUT-256) + worker (M-CAM.3 / AUT-257).

Owns the PreviewLifecycle state machine that Tauri-managed state holds + the pipeline::CameraPipeline worker that runs the gst capture subprocess on a dedicated thread. M-CAM.2 landed the state machine; M-CAM.3 layers the gst worker on top, with the wisp render + Tauri Channel<T> frame emission shipping in follow-up commits (see pipeline.rs’s “What this commit ships” callout for the explicit boundary).

The state machine is pure Rust (no tauri::* types, no async, no I/O) so the four-state transition contract works on every OS including Windows, where Tauri 2’s mock_builder won’t even link at test-time (per CLAUDE.md).

Re-exports

pub use diagnostics::DiagnosticsSnapshot;

pub use diagnostics::PreviewDiagnostics;

pub use pipeline::CameraPipeline;

pub use pipeline::CameraPipelineHandle;

Modules

diagnostics

M-CAM.3 / AUT-257 — runtime diagnostics for the camera pipeline.

pipeline

M-CAM.3 / AUT-257 — camera-pipeline worker thread.

Structs

PreviewState

Tauri-managed wrapper around PreviewLifecycle. Held in tauri::State so the IPC command handlers + the future frame emitter share one source of truth.

Enums

CameraError

Error variants the IPC command surface can return to Leptos.

PreviewLifecycle

Lifecycle state of the camera preview pipeline.