feat: use managed model capabilities for reasoning and image input

shared/coding-conversation-contracts.ts

@@ -1,4 +1,5 @@
 import type { CapabilityResultV1 } from './data-service';
+import type { ManagedReasoningChoice, ManagedModelCapability } from './managed-model-capabilities';
 import type { ModelToolDetailsV1 } from './model-tools';
 import type { DevicePackageToolDetailsV1 } from './device-packages';
 
@@ -12,12 +13,14 @@ export interface ProductModelRef {
   accountId: string;
   modelId: string;
   thinkingLevel: ConversationThinkingLevel;
+  reasoningChoice?: ManagedReasoningChoice;
 }
 
 export interface ConversationModelState {
   model: ProductModelRef | null;
   modelResolution: 'resolved' | 'required';
   availableThinkingLevels?: ConversationThinkingLevel[];
+  managedCapability?: ManagedModelCapability;
 }
 
 export interface PublicUsage {
@@ -400,6 +403,7 @@ export interface SetConversationModelInput {
 export interface SetThinkingLevelInput {
   conversationId: string;
   thinkingLevel: ConversationThinkingLevel;
+  reasoningChoice?: ManagedReasoningChoice;
 }
 
 export interface ForkConversationInput {