fix(mobile): long commands no longer freeze Android work-log taps

apps/mobile/src/lib/threadActivity.test.ts

@@ -2322,6 +2322,22 @@ it("uses a compact reasoning preview and a short expanded heading", () => {
   expect(workEntryRowLabel({ ...entry, toolLifecycleStatus: "completed" }, true)).toBe("Thought");
 });
 
+it("caps one-line work-log labels for multi-kilobyte commands", () => {
+  const command = `cd /repo && python3 - <<'PY'\n${"print('x')\n".repeat(400)}PY`;
+  const entry = {
+    id: "heredoc",
+    label: "Ran command",
+    createdAt: "2026-09-17T12:00:00Z",
+    itemType: "command_execution" as const,
+    tone: "tool" as const,
+    command,
+  };
+  for (const label of [workEntryRowLabel(entry), workEntryRowLabel(entry, true)]) {
+    expect(label.startsWith("cd /repo && python3 - <<'PY' print('x')")).toBe(true);
+    expect(label.length).toBeLessThanOrEqual(203);
+  }
+});
+
 it("keeps search output in expanded details rather than the compact label", () => {
   const entry = {
     id: "search",

apps/mobile/src/lib/threadActivity.ts

@@ -62,6 +62,7 @@ import {
   formatSearchToolLabel,
 } from "@t3tools/shared/toolActivity";
 import { formatDuration } from "@t3tools/shared/orchestrationTiming";
+import { truncate } from "@t3tools/shared/String";
 import type { HtmlRenderReference } from "@t3tools/shared/htmlRender";
 import type { McpAppReference } from "@t3tools/shared/mcpApp";
 import {
@@ -254,8 +255,15 @@ export interface AgentSpawnSummary {
   }>;
 }
 
+/**
+ * Work-log headers render one line, but Android still lays out and hit-tests
+ * the whole string, so a multi-kilobyte heredoc stalls touch dispatch until
+ * the app ANRs. Expanded bodies and copy keep the full text.
+ */
+const WORK_LOG_LABEL_MAX_LENGTH = 200;
+
 function compactWorkEntryText(value: string): string {
-  return value.replace(/\s+/gu, " ").trim();
+  return truncate(value.replace(/\s+/gu, " "), WORK_LOG_LABEL_MAX_LENGTH);
 }
 
 /** Expanded work rows keep their detail while compact rows show a stable one-line label. */
@@ -296,7 +304,7 @@ export function workEntryRowLabel(entry: WorkLogPresentationEntry, expanded = fa
         ? entry.changedFiles[0]!
         : `${entry.changedFiles[0]!} +${entry.changedFiles.length - 1} more`
       : null);
-  if (expanded) return preview?.trim() || entry.label;
+  if (expanded) return preview?.trim() ? truncate(preview, WORK_LOG_LABEL_MAX_LENGTH) : entry.label;
   return preview ? compactWorkEntryText(preview) || entry.label : entry.label;
 }
 
@@ -872,7 +880,7 @@ function singleToolCallLabel(activity: ThreadFeedActivity, expanded: boolean): s
   const presentation = resolveWorkEntryToolPresentation(activity.workEntry, "completed");
   if (presentation) return presentation.displayName;
   const command = activity.workEntry.command?.trim();
-  return command || activity.summary;
+  return command ? truncate(command, WORK_LOG_LABEL_MAX_LENGTH) : activity.summary;
 }
 
 function isEmptyMessage(entry: RawThreadFeedEntry): boolean {