Module backend 

Structs

Backend

DiagnosticsConfig

Per-category diagnostic toggle flags. The master enabled switch defaults to false — clients must opt in via initializationOptions.diagnostics.enabled = true. Individual category flags default to true, so flipping enabled on enables everything unless specific categories are turned off.

LspConfig

Configuration received from the client via initializationOptions.

OpenFiles

Shared handle to open-file state. Cheaply cloneable — wraps an Arc<DashMap> so it can be captured by async closures alongside Arc<DocumentStore>.