Fix concurrency warnings in SpeziLLM & SpeziLLMFog

Sources/SpeziLLM/Helpers/LLMContext+Chat.swift

@@ -6,6 +6,7 @@
 // SPDX-License-Identifier: MIT
 //
 
+@preconcurrency
 import SpeziChat
 
 

Sources/SpeziLLM/LLMPlatformState.swift

@@ -10,7 +10,7 @@
 /// Describes the current state of the ``LLMPlatform`` which is responsible for sending ``LLMSchema``s to execution via ``LLMSession``s.
 /// 
 /// The ``LLMPlatformState`` is quite minimal with only ``LLMPlatformState/idle`` and ``LLMPlatformState/processing`` states.
-public enum LLMPlatformState {
+public enum LLMPlatformState: Sendable {
     /// Indicates that the ``LLMPlatform`` is currently idle and doesn't execute any ``LLMSession``s.
     case idle
     /// Indicates that the ``LLMPlatform`` is currently processing and executing ``LLMSession``s.

Sources/SpeziLLM/LLMSessionProvider.swift

@@ -45,6 +45,7 @@ public struct _LLMSessionProvider<Schema: LLMSchema>: DynamicProperty {     // s
     }
 
     /// Creates a `Binding` to the ``LLMSession``that one can pass around. Useful for passing the ``LLMSession`` as a `Binding` to the ``LLMChatView``.
+    @MainActor
     public var projectedValue: Binding<Schema.Platform.Session> {
         Binding {
             wrappedValue

Sources/SpeziLLM/Models/LLMContextEntity.swift

@@ -14,9 +14,9 @@ import Foundation
 /// A ``LLMContextEntity`` can be thought of as a single message entity within a ``LLMContext``
 /// It consists of a ``LLMContextEntity/Role``, a unique identifier, a timestamp in the form of a `Date` as well as an `String`-based ``LLMContextEntity/content`` property which can contain Markdown-formatted text.
 /// Furthermore, the ``LLMContextEntity/complete`` flag indicates if the current state of the ``LLMContextEntity`` is final and the content will not be updated anymore.
-public struct LLMContextEntity: Codable, Equatable, Hashable, Identifiable {
+public struct LLMContextEntity: Codable, Equatable, Hashable, Identifiable, Sendable {
     /// Represents a tool call by the LLM, including its parameters
-    public struct ToolCall: Codable, Equatable, Hashable {
+    public struct ToolCall: Codable, Equatable, Hashable, Sendable {
         /// The ID of the function call, uniquely identifying the specific function call and matching the response to it.
         public let id: String
         /// The name of the function call.
@@ -39,7 +39,7 @@ public struct LLMContextEntity: Codable, Equatable, Hashable, Identifiable {
     }
 
     /// Indicates which ``LLMContextEntity/Role`` is associated with a ``LLMContextEntity``.
-    public enum Role: Codable, Equatable, Hashable {
+    public enum Role: Codable, Equatable, Hashable, Sendable {
         case user
         case assistant(toolCalls: [ToolCall] = [])
         case system