feat(cli): combine elapsed + timeout in shell time indicator (#3512)

* feat(cli): combine elapsed + timeout in shell time indicator

Render shell tools that have an explicit timeout as
`(elapsed · timeout N)` inline with the Running… status from t=0,
instead of splitting the information across the right-aligned elapsed
indicator and the ShellStatsBar row.

- formatters: add a `hideTrailingZeros` option so whole seconds render
  as `5s` rather than `5.0s` while fractional values like `5.5s` stay
  intact
- ToolElapsedTime: accept optional `timeoutMs`; when set, skip the 3s
  quiet threshold and render the combined `(elapsed · timeout N)` label
- ToolMessage: extract `timeoutMs` from AnsiOutputDisplay and feed it
  to ToolElapsedTime
- ShellStatsBar: drop its `timeoutMs` field (now inline); keeps
  `+N lines` and memory usage only
- Unify both modes on `formatDuration` so hour-range output is
  consistent (`1h 2m 6s` across timeout and no-timeout paths)

* feat(cli): thread shell timeoutMs through compact tool group display

The combined `(elapsed · timeout N)` format introduced in the previous
commit was only wired through the expanded ToolMessage path. Compact
tool groups kept rendering ToolElapsedTime without timeoutMs, so shell
tools displayed in compact mode silently dropped the timeout budget.

- CompactToolGroupDisplay: add getShellTimeoutMs() to pull timeoutMs
  off the active tool's AnsiOutputDisplay result (same shape used by
  ToolMessage) and feed it to ToolElapsedTime
- add CompactToolGroupDisplay.test.tsx covering the three paths:
  ansi display with timeoutMs, ansi display without timeoutMs, and
  non-ansi resultDisplay (string)

packages/cli/src/ui/components/messages/ToolMessage.tsx

@@ -147,7 +147,6 @@ const useResultDisplayRenderer = (
         stats: {
           totalLines: display.totalLines,
           totalBytes: display.totalBytes,
-          timeoutMs: display.timeoutMs,
         },
       };
     }
@@ -314,6 +313,21 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({
     }
   }, [resultDisplay]);
 
+  // Shell tools surface their configured timeout via AnsiOutputDisplay as
+  // soon as streaming starts. Feed it into ToolElapsedTime so the budget is
+  // shown inline (`(elapsed · timeout N)`) instead of in a separate stats
+  // row.
+  const shellTimeoutMs = React.useMemo(() => {
+    if (
+      typeof resultDisplay === 'object' &&
+      resultDisplay !== null &&
+      'ansiOutput' in resultDisplay
+    ) {
+      return (resultDisplay as AnsiOutputDisplay).timeoutMs;
+    }
+    return undefined;
+  }, [resultDisplay]);
+
   React.useEffect(() => {
     if (!lastUpdateTime) {
       return;
@@ -410,6 +424,7 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({
         <ToolElapsedTime
           status={status}
           executionStartTime={executionStartTime}
+          timeoutMs={shellTimeoutMs}
         />
         {emphasis === 'high' && <TrailingIndicator />}
       </Box>