Function LaunchAndManageCocoonSideCar 

async fn LaunchAndManageCocoonSideCar(
    ApplicationHandle: AppHandle,
    Environment: Arc<MountainEnvironment>,
) -> Result<(), CommonError>

Spawns the Cocoon process, manages its communication channels, and performs the complete initialization handshake sequence.

This function implements the complete Cocoon lifecycle:

1. Validates bootstrap script availability
2. Constructs environment variables for IPC and logging
3. Spawns Node.js process with proper IO redirection
4. Captures stdout/stderr for logging
5. Waits for gRPC server to be ready
6. Establishes Vine connection
7. Sends initialization payload and validates response

Arguments

• ApplicationHandle - Tauri application handle for resolving resource paths
• Environment - Mountain environment containing application state

Returns

• Ok(()) - Cocoon process spawned, connected, and initialized successfully
• Err(CommonError) - Any failure during the initialization sequence

Errors

• FileSystemNotFound: Bootstrap script not found in resources
• IPCError: Failed to spawn process, connect gRPC, or complete handshake

Lifecycle

The process runs as a background task with IO redirection for logging. Process failures are logged but not automatically restarted (callers should implement restart strategies based on their requirements).