fix(agent-presence): keep remote, mobile and CLI views on host ownership (step 3/3)

mobile/src/session/mobile-agent-presence.test.ts

@@ -0,0 +1,47 @@
+import { describe, expect, it } from 'vitest'
+import type { AgentStatusEntry } from '../../../src/shared/agent-status-types'
+import { resolveMobileNativeChat } from './mobile-native-chat-eligibility'
+import { resolveMobileTerminalTabAgentId } from './mobile-terminal-tab-agent'
+
+function tab(ended?: true) {
+  const agentStatus: AgentStatusEntry = {
+    state: 'done',
+    prompt: '',
+    paneKey: 'tab:leaf',
+    updatedAt: 1,
+    stateStartedAt: 1,
+    stateHistory: [],
+    agentType: 'claude',
+    providerSession: { key: 'session_id', id: 'session' },
+    agentPresence: {
+      agent: 'claude',
+      process: { pid: 42, platform: 'linux', startTime: 'boot:42' },
+      ...(ended ? { ended } : {})
+    }
+  }
+  return { type: 'terminal', title: 'claude', launchAgent: 'claude' as const, agentStatus }
+}
+describe('host process presence on mobile', () => {
+  it('retains an idle owner under a shell title', () => {
+    const live = { ...tab(), title: 'zsh' }
+    expect(resolveMobileTerminalTabAgentId(live)).toBe('claude')
+    expect(resolveMobileNativeChat(live)?.sessionId).toBe('session')
+  })
+  it('does not revive an ended owner from title, launch or transcript identity', () => {
+    expect(resolveMobileTerminalTabAgentId(tab(true))).toBeNull()
+    expect(resolveMobileNativeChat(tab(true))).toBeNull()
+  })
+  it('shows a hookless agent started after the owner exited, as it would without presence', () => {
+    const successor = { ...tab(true), title: 'aider' }
+    expect(resolveMobileTerminalTabAgentId(successor)).toBe('aider')
+    const withoutPresence = { ...successor, agentStatus: undefined, launchAgent: undefined }
+    expect(resolveMobileTerminalTabAgentId(withoutPresence)).toBe('aider')
+  })
+  it('keeps old-host and unidentified rows on the legacy path', () => {
+    const legacy = tab()
+    delete legacy.agentStatus.agentPresence
+    expect(resolveMobileNativeChat(legacy)?.agent).toBe('claude')
+    legacy.agentStatus.agentPresence = { agent: 'claude', ended: true }
+    expect(resolveMobileTerminalTabAgentId(legacy)).toBe('claude')
+  })
+})

mobile/src/session/mobile-native-chat-eligibility.ts

@@ -1,3 +1,7 @@
+import {
+  paneEvidenceAgent,
+  selectLiveOwnerAgent
+} from '../../../src/shared/ended-agent-owner-evidence'
 import { isAgentSessionHandleProvider } from '../../../src/shared/agent-session-provider-handle'
 import type { AgentStatusEntry } from '../../../src/shared/agent-status-types'
 import { isRuntimeOwnedSshTargetId } from '../../../src/shared/execution-host'
@@ -58,12 +62,14 @@ export function resolveMobileNativeChat(
   if (tab.type !== 'terminal') {
     return null
   }
-  const liveAgent = tab.agentStatus?.agentType ?? null
+  const presence = tab.agentStatus?.agentPresence
+  const liveAgent =
+    selectLiveOwnerAgent(presence) ?? paneEvidenceAgent(presence, tab.agentStatus?.agentType)
   const agent = liveAgent
     ? isNativeChatSupportedAgent(liveAgent)
       ? liveAgent
       : null
-    : tab.launchAgent
+    : paneEvidenceAgent(presence, tab.launchAgent)
   if (!agent || !isNativeChatSupportedAgent(agent)) {
     return null
   }

mobile/src/session/mobile-terminal-tab-agent.ts

@@ -1,3 +1,7 @@
+import {
+  paneEvidenceAgent,
+  selectLiveOwnerAgent
+} from '../../../src/shared/ended-agent-owner-evidence'
 import { stripLeadingAgentTitleDecorationOrEmpty } from '../../../src/shared/agent-title-decoration'
 import { resolveExplicitTerminalTitleAgentType } from '../../../src/shared/terminal-title-agent-type'
 import type { AgentStatusEntry } from '../../../src/shared/agent-status-types'
@@ -17,22 +21,28 @@ import type { MobileSessionTab } from './mobile-session-route-types'
  */
 type MobileTerminalTabAgentIdentity = {
   title: string
-  agentStatus?: { agentType?: AgentStatusEntry['agentType'] | null } | null
+  agentStatus?: {
+    agentType?: AgentStatusEntry['agentType'] | null
+    agentPresence?: AgentStatusEntry['agentPresence']
+  } | null
   launchAgent?: TuiAgent | null
 }
 
 /** Agent identity Orca owns, excluding the display-only title fallback. */
 export function resolveMobileTerminalTabOwnedAgentId(
   tab: MobileTerminalTabAgentIdentity
 ): string | null {
-  const hookAgentType = tab.agentStatus?.agentType?.trim()
+  const presence = tab.agentStatus?.agentPresence
+  const owner = selectLiveOwnerAgent(presence)
+  if (owner) {
+    return owner
+  }
+  // Why: an exited owner's own hook row and launch intent are history; other agents still show.
+  const hookAgentType = paneEvidenceAgent(presence, tab.agentStatus?.agentType?.trim())
   if (hookAgentType && hookAgentType !== 'unknown') {
     return hookAgentType
   }
-  if (tab.launchAgent) {
-    return tab.launchAgent
-  }
-  return null
+  return paneEvidenceAgent(presence, tab.launchAgent)
 }
 
 export function resolveMobileTerminalTabAgentId(
@@ -42,7 +52,10 @@ export function resolveMobileTerminalTabAgentId(
   if (ownedAgent) {
     return ownedAgent
   }
-  return resolveExplicitTerminalTitleAgentType(tab.title)
+  return paneEvidenceAgent(
+    tab.agentStatus?.agentPresence,
+    resolveExplicitTerminalTitleAgentType(tab.title)
+  )
 }
 
 export function getMobileSessionTabTitle(tab: MobileSessionTab): string {

mobile/src/transport/mobile-runtime-client-capabilities.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, it } from 'vitest'
 import {
   AGENT_LAUNCH_RUNTIME_CAPABILITY,
+  AGENT_PROCESS_PRESENCE_RUNTIME_CAPABILITY,
   AGENT_SESSION_TURN_ITEM_CAPABILITY,
   CLAUDE_STRUCTURED_AGENT_SESSION_RUNTIME_CAPABILITY,
   SESSION_TABS_SPLIT_GROUP_PLACEMENT_RUNTIME_CAPABILITY,
@@ -34,6 +35,10 @@ describe('mobile runtime client capabilities', () => {
     expect(MOBILE_RUNTIME_CLIENT_CAPABILITIES).toContain(AGENT_LAUNCH_RUNTIME_CAPABILITY)
   })
 
+  it('opts into the host owner record that tab icons and Chat read', () => {
+    expect(MOBILE_RUNTIME_CLIENT_CAPABILITIES).toContain(AGENT_PROCESS_PRESENCE_RUNTIME_CAPABILITY)
+  })
+
   it('stays inside the bounds the host parses, which fail closed to no capabilities at all', () => {
     expect(MOBILE_RUNTIME_CLIENT_CAPABILITIES.length).toBeLessThanOrEqual(HOST_CAPABILITY_LIMIT)
     for (const capability of MOBILE_RUNTIME_CLIENT_CAPABILITIES) {

mobile/src/transport/mobile-runtime-client-capabilities.ts

@@ -1,5 +1,6 @@
 import {
   AGENT_LAUNCH_RUNTIME_CAPABILITY,
+  AGENT_PROCESS_PRESENCE_RUNTIME_CAPABILITY,
   AGENT_SESSION_PENDING_SEND_RESULT_RUNTIME_CAPABILITY,
   AGENT_SESSION_TURN_ITEM_CAPABILITY,
   CLAUDE_STRUCTURED_AGENT_SESSION_RUNTIME_CAPABILITY,
@@ -20,7 +21,9 @@ export const MOBILE_RUNTIME_CLIENT_CAPABILITIES = remoteRuntimeClientCapabilitie
   // Mobile renders either launch outcome — a structured chat or a terminal agent — so it may ask
   // the host to pick. Without this the host refuses `agent.launch` and every mobile create with an
   // agent stays a PTY.
-  AGENT_LAUNCH_RUNTIME_CAPABILITY
+  AGENT_LAUNCH_RUNTIME_CAPABILITY,
+  // Tab icons and Chat read the host's owner record; without it the host sends the legacy row.
+  AGENT_PROCESS_PRESENCE_RUNTIME_CAPABILITY
 ])
 
 export const MOBILE_RUNTIME_CLIENT_CAPABILITY_UPDATE_METHOD =

src/cli/handlers/browser-identity.ts

@@ -3,7 +3,7 @@ import type {
   BrowserIdentityModeStatus,
   BrowserUserAgentMode
 } from '../../shared/browser-user-agent-mode'
-import { BROWSER_IDENTITY_RUNTIME_CAPABILITY } from '../../shared/protocol-version'
+import { BROWSER_IDENTITY_RUNTIME_CAPABILITY } from '../../shared/browser-runtime-capabilities'
 import type { RuntimeStatus } from '../../shared/runtime-types'
 import type { CommandHandler, HandlerContext } from '../dispatch'
 import { getRequiredStringFlag } from '../flags'