Add mobile structured session read flow

src/shared/agent-session-journal-types.ts

@@ -125,6 +125,8 @@ export type AgentJournalQuestionItem = {
   kind: 'question'
   question: string
   options: AgentJournalPromptOption[]
+  /** Present when the provider accepts an answer outside the offered options. */
+  freeTextQuestionId?: string
   resolution: AgentJournalResolution
 }
 

src/shared/agent-session-wire.ts

@@ -49,6 +49,8 @@ export type AgentSessionHistoryPage = {
     newest: AgentJournalCursor | null
     nextCursor: AgentJournalCursor
   }
+  /** Current journal head for switching from a bounded page to live subscribe. */
+  liveCursor?: AgentJournalCursor
   hasOlder: boolean
   hasNewer: boolean
 }

src/shared/runtime-types.ts

@@ -251,11 +251,23 @@ export type RuntimeMobileSessionBrowserTab = {
   isActive: boolean
 }
 
+export type RuntimeMobileSessionAgentTab = {
+  type: 'agent-session'
+  id: string
+  title: string
+  sessionId: string
+  agent: 'codex'
+  color?: string | null
+  isPinned?: boolean
+  isActive: boolean
+}
+
 export type RuntimeMobileSessionSnapshotTab =
   | RuntimeMobileSessionTerminalTab
   | RuntimeMobileSessionMarkdownTab
   | RuntimeMobileSessionFileTab
   | RuntimeMobileSessionBrowserTab
+  | RuntimeMobileSessionAgentTab
 
 export type RuntimeMobileSessionTerminalClientTab =
   | (RuntimeMobileSessionTerminalTab & {
@@ -272,6 +284,7 @@ export type RuntimeMobileSessionClientTab =
   | RuntimeMobileSessionMarkdownTab
   | RuntimeMobileSessionFileTab
   | RuntimeMobileSessionBrowserTab
+  | RuntimeMobileSessionAgentTab
 
 export type RuntimeMobileSessionTabGroup = {
   id: string
@@ -328,7 +341,7 @@ export type RuntimeMobileSessionTabsSnapshot = {
   snapshotVersion: number
   activeGroupId: string | null
   activeTabId: string | null
-  activeTabType: 'terminal' | 'markdown' | 'file' | 'browser' | null
+  activeTabType: 'terminal' | 'markdown' | 'file' | 'browser' | 'agent-session' | null
   tabGroups?: RuntimeMobileSessionTabGroup[]
   tabGroupLayout?: TabGroupLayoutNode | null
   tabs: RuntimeMobileSessionSnapshotTab[]
@@ -342,7 +355,7 @@ export type RuntimeMobileSessionTabsResult = {
   navigationIntent?: 'follow'
   activeGroupId: string | null
   activeTabId: string | null
-  activeTabType: 'terminal' | 'markdown' | 'file' | 'browser' | null
+  activeTabType: 'terminal' | 'markdown' | 'file' | 'browser' | 'agent-session' | null
   tabGroups?: RuntimeMobileSessionTabGroup[]
   tabGroupLayout?: TabGroupLayoutNode | null
   tabs: RuntimeMobileSessionClientTab[]