Merge latest master into Web transcript

# Conflicts:
#	packages/client/runtime/README.i18n.yaml
#	packages/client/runtime/src/client/index.ts
#	packages/client/runtime/src/client/sessions/conversation.ts
#	packages/client/runtime/src/client/sessions/session.ts
#	packages/client/ui-conversation/README.i18n.yaml
#	packages/client/ui-conversation/src/client/chat/MessageItem.module.css
#	packages/client/ui-conversation/src/client/chat/MessageItem.tsx
#	packages/client/ui-conversation/src/client/chat/chat-flow.ts
#	packages/client/ui-conversation/tests/chat-branch-tails.spec.tsx

packages/client/runtime/src/client/sessions/conversation.ts

@@ -5,6 +5,7 @@
 
 import type { CommandId } from '@deepseek-ai/dsh-commands/brand'
 import type { ContentBlock } from '@deepseek-ai/dsh-llm/types'
+import type { LlmRetryEventData } from '@deepseek-ai/dsh-llm-retry/types'
 import type { TodoItem } from '@deepseek-ai/dsh-session/types'
 import type {
   InboxItemId, RpcError, SessionId, ToolCallView, ToolResultView,
@@ -121,6 +122,19 @@ export interface ContextMessageNode {
   source: unknown
 }
 
+/** Durable notice that a closed failed step is waiting for a model-request retry. */
+export type ModelRetryNode = LlmRetryEventData & {
+  kind: 'model-retry'
+  seq: number
+  /** Unix epoch ms from the llm/retry session event. */
+  time: number
+  /**
+   * Client-derived lifecycle: scheduled until a retry turn starts, started
+   * once it does, or cancelled when the failed turn aborts first.
+   */
+  retryState: 'scheduled' | 'started' | 'cancelled'
+}
+
 /** A tool result paired (when in-window) with its call head. */
 export interface ToolResultNode {
   kind: 'tool-result'
@@ -208,6 +222,7 @@ export type ConversationNode =
   | AssistantMessageNode
   | SteeringMessageNode
   | ContextMessageNode
+  | ModelRetryNode
   | ToolResultNode
   | CommandNode
   | CompactionSummaryNode
@@ -291,7 +306,7 @@ export interface PromptError {
 /** The immutable snapshot contract Session hands to uSES (see the web client architecture RFC). */
 export interface ConversationSnapshot {
   sessionId: SessionId
-  /** Human transcript (finalized conversation nodes in log order). */
+  /** Human transcript plus retry notices and interrupted-turn terminal nodes in event order. */
   nodes: readonly ConversationNode[]
   partial: PartialAssistant | null
   runningCalls: readonly RunningToolCall[]