Refactor WebRenderer to use server-side streaming with OGG-FLAC sink

This commit refactors the WebRenderer to use a server-side streaming architecture with OGG-FLAC sink instead of the previous WebSocket-based approach. The changes include:

- Replaced WebSocket communication with HTTP streaming using DirectOggFlacSink
- Implemented a new pipeline architecture with dedicated handlers for UPnP commands
- Added new modules for registration, registry, and streaming
- Updated the renderer to work with a pipeline control system
- Removed old WebSocket session management
- Added support for HTTP streaming with gapless playback
- Updated dependencies and features for the new architecture

The WebRenderer now acts as a MediaRenderer UPnP device that serves audio streams via HTTP endpoints, with commands relayed to the audio pipeline through a new control system.

pmowebrenderer/src/lib.rs

@@ -1,25 +1,29 @@
-//! PMO Web Renderer - Transforme un navigateur en MediaRenderer UPnP privé
+//! PMO Web Renderer — Transforme un navigateur en MediaRenderer UPnP privé
+//!
+//! Architecture serveur-side streaming :
+//! - Le serveur ouvre la source audio (fichier/HTTP) et l'encode en FLAC
+//! - Le navigateur lit un flux FLAC via GET /api/webrenderer/{id}/stream
+//! - Les commandes UPnP sont relayées vers le pipeline audio via PipelineControl
 
 mod error;
 mod handlers;
 mod messages;
+mod pipeline;
+mod register;
+mod registry;
 mod renderer;
-mod session;
 mod state;
-mod websocket;
+mod stream;
 
 #[cfg(feature = "pmoserver")]
 mod config;
 
 pub use error::WebRendererError;
-pub use messages::{
-    BrowserCapabilities, ClientMessage, CommandParams, PlaybackState, RendererInfo, ServerMessage,
-    TrackMetadata, TransportAction,
-};
+pub use messages::PlaybackState;
+pub use pipeline::{PipelineControl, PipelineHandle};
+pub use registry::{RendererRegistry, WebRendererInstance};
 pub use renderer::{FactoryError, WebRendererFactory};
-pub use session::{SessionManager, WebRendererSession};
 pub use state::{RendererState, SharedState};
-pub use websocket::{websocket_handler, WebSocketState};
 
 #[cfg(feature = "pmoserver")]
 pub use config::WebRendererExt;