Module settings 

Settings subsystem types and service

Modules

handler

Settings management handlers

service

Settings service with caching, validation, and permission checks

types

Settings types and definitions

Structs

FrozenSettingsRegistry

Immutable registry stored in AppState

Setting

Runtime setting instance (from database)

SettingDefinition

Setting definition - defines metadata for each setting

SettingDefinitionBuilder

Builder for SettingDefinition with fluent API

SettingsRegistry

Mutable registry used during app initialization

Enums

PermissionLevel

Setting permission level defines who can modify a setting

SettingScope

Setting scope defines where a setting value applies

SettingValue

Setting value types