fix(remote): always show main agent terminal on mobile

Add isShell flag to PTY session metadata so buildAgentList() can
filter out shell/standalone terminals from the mobile agent list.
Previously, when the main agent exited while a shell sub-terminal
was still running, the shell would replace the main agent.

Author: johannesjo

electron/ipc/pty.ts

@@ -9,6 +9,7 @@ interface PtySession {
   channelId: string;
   taskId: string;
   agentId: string;
+  isShell: boolean;
   flushTimer: ReturnType<typeof setTimeout> | null;
   subscribers: Set<(encoded: string) => void>;
   scrollback: RingBuffer;
@@ -86,6 +87,7 @@ export function spawnAgent(
     env: Record<string, string>;
     cols: number;
     rows: number;
+    isShell?: boolean;
     onOutput: { __CHANNEL_ID__: string };
   },
 ): void {
@@ -150,6 +152,7 @@ export function spawnAgent(
     channelId,
     taskId: args.taskId,
     agentId: args.agentId,
+    isShell: args.isShell ?? false,
     flushTimer: null,
     subscribers: new Set(),
     scrollback: new RingBuffer(),
@@ -316,9 +319,11 @@ export function getActiveAgentIds(): string[] {
 }
 
 /** Return metadata for a specific agent, or null if not found. */
-export function getAgentMeta(agentId: string): { taskId: string; agentId: string } | null {
+export function getAgentMeta(
+  agentId: string,
+): { taskId: string; agentId: string; isShell: boolean } | null {
   const s = sessions.get(agentId);
-  return s ? { taskId: s.taskId, agentId: s.agentId } : null;
+  return s ? { taskId: s.taskId, agentId: s.agentId, isShell: s.isShell } : null;
 }
 
 /** Return the current column width of an agent's PTY. */

electron/remote/server.ts

@@ -60,7 +60,7 @@ function getNetworkIps(): { wifi: string | null; tailscale: string | null } {
   return { wifi, tailscale };
 }
 
-/** Build the agent list, deduplicated by taskId (keeps latest agent per task). */
+/** Build the agent list, deduplicated by taskId (keeps main agent per task). */
 function buildAgentList(
   getTaskName: (taskId: string) => string,
   getAgentStatus: (agentId: string) => {
@@ -73,6 +73,8 @@ function buildAgentList(
   for (const agentId of getActiveAgentIds()) {
     const meta = getAgentMeta(agentId);
     if (!meta) continue;
+    // Skip shell/sub-terminals — mobile should only show the main agent
+    if (meta.isShell) continue;
     const info = getAgentStatus(agentId);
     const agent: RemoteAgent = {
       agentId,

src/components/TaskPanel.tsx

@@ -754,6 +754,7 @@ export function TaskPanel(props: TaskPanelProps) {
                         <TerminalView
                           taskId={props.task.id}
                           agentId={shellId}
+                          isShell
                           isFocused={
                             props.isActive && store.focusedPanel[props.task.id] === `shell:${i()}`
                           }

src/components/TerminalPanel.tsx

@@ -142,6 +142,7 @@ export function TerminalPanel(props: TerminalPanelProps) {
           <TerminalView
             taskId={props.terminal.id}
             agentId={props.terminal.agentId}
+            isShell
             isFocused={props.isActive && store.focusedPanel[props.terminal.id] === 'terminal'}
             command=""
             args={['-l']}

src/components/TerminalView.tsx

@@ -44,6 +44,7 @@ interface TerminalViewProps {
   args: string[];
   cwd: string;
   env?: Record<string, string>;
+  isShell?: boolean;
   onExit?: (exitInfo: {
     exit_code: number | null;
     signal: string | null;
@@ -380,6 +381,7 @@ export function TerminalView(props: TerminalViewProps) {
       env: props.env ?? {},
       cols: term.cols,
       rows: term.rows,
+      isShell: props.isShell,
       onOutput,
       // eslint-disable-next-line solid/reactivity -- promise catch handler reads current prop values intentionally
     }).catch((err) => {