fix(analytics): tighten top-bar layout (single-line trigger, grouped cluster, compact timestamp)

Three design taste fixes that ride on top of the disclaimer collapse:

- Single-line profile trigger: render only `option.label` in the
  Select trigger; keep label+description in the open menu where the
  description earns its keep. Removes the two-line trigger that broke
  the row baseline (taller pill, vertical-center cascade).
- Group Select + Info icon in an `inline-flex … shrink-0` cluster so
  they wrap as a single unit and the icon never orphans onto a second
  row under the refresh button.
- Compact timestamp: "Updated less than a minute ago" → "1m ago"
  rendered in font-mono. Full phrase preserved via `title`
  attribute. Drops the localized prefix into a tooltip-only context.
- Trigger width trimmed 190px → 170px since it no longer needs to fit
  a description line.

ui/src/pages/analytics/components/analytics-header.tsx

@@ -54,10 +54,12 @@ export function AnalyticsHeader({
         <p className="text-sm text-muted-foreground">{t('analytics.subtitle')}</p>
       </div>
       <div className="flex flex-wrap items-center gap-2 xl:justify-end">
-        <div className="flex items-center gap-1">
+        <div className="inline-flex items-center gap-1 shrink-0">
           <Select value={selectedProfile} onValueChange={onProfileChange}>
-            <SelectTrigger className="h-8 w-[190px]" aria-label="Analytics profile">
+            <SelectTrigger className="h-8 w-[170px]" aria-label="Analytics profile">
-              <SelectValue placeholder="All profiles" />
+              <SelectValue placeholder="All profiles">
+                {profileOptions.find((o) => o.value === selectedProfile)?.label ?? 'All profiles'}
+              </SelectValue>
             </SelectTrigger>
             <SelectContent>
               {profileOptions.map((option) => (
@@ -114,8 +116,11 @@ export function AnalyticsHeader({
         />
 
         {lastUpdatedText && (
-          <span className="text-xs text-muted-foreground whitespace-nowrap">
+          <span
-            {t('analytics.updated', { value: lastUpdatedText })}
+            className="text-xs text-muted-foreground whitespace-nowrap font-mono"
+            title={t('analytics.updated', { value: lastUpdatedText })}
+          >
+            {lastUpdatedText}
           </span>
         )}
         <Button

ui/src/pages/analytics/hooks.ts

@@ -6,7 +6,18 @@
 
 import { useState, useMemo, useCallback } from 'react';
 import type { DateRange } from 'react-day-picker';
-import { subDays, formatDistanceToNow } from 'date-fns';
+import { subDays } from 'date-fns';
+
+function formatCompactRelativeTime(date: Date): string {
+  const seconds = Math.max(1, Math.floor((Date.now() - date.getTime()) / 1000));
+  if (seconds < 60) return `${seconds}s ago`;
+  const minutes = Math.floor(seconds / 60);
+  if (minutes < 60) return `${minutes}m ago`;
+  const hours = Math.floor(minutes / 60);
+  if (hours < 24) return `${hours}h ago`;
+  const days = Math.floor(hours / 24);
+  return `${days}d ago`;
+}
 import {
   useUsageSummary,
   useUsageTrends,
@@ -151,10 +162,10 @@ export function useAnalyticsPage() {
     persistSelectedProfile(profile);
   }, []);
 
-  // Format "Last updated" text
+  // Compact "Last updated" text (e.g. "1m ago", "2h ago")
   const lastUpdatedText = useMemo(() => {
     if (!status?.lastFetch) return null;
-    return formatDistanceToNow(new Date(status.lastFetch), { addSuffix: true });
+    return formatCompactRelativeTime(new Date(status.lastFetch));
   }, [status?.lastFetch]);
 
   // Handle model click for popover