web: wrap analysis-card context notes on mobile; fix NaN critical path

The confidence bar and the two fleet-context notes on an analysis finding
shared a non-wrapping flex row, so on phones they squeezed into
word-per-line columns — the row now wraps, each note taking its own line.

Also visible in the same screenshot: "critical path NaNh NaNm" in the
ESP-blocking apps block. The backend omits null fields (WhenWritingNull),
so espAppsOccupancySeconds arrives as undefined and the strict !== null
guard let it through to formatDuration. Loose != null check now hides the
label when the value is absent.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/Web/autopilot-monitor-web/app/sessions/components/AnalysisResultsSection.tsx

@@ -244,8 +244,10 @@ function AnalysisResultCard({
             <span className="text-xs px-2 py-0.5 rounded-full bg-gray-200 text-gray-600">{result.category}</span>
           </div>
           <h3 className="font-medium text-gray-900">{result.ruleTitle}</h3>
-          <div className="flex items-center mt-1 space-x-3">
-            <div className="flex items-center space-x-1">
+          {/* flex-wrap: on narrow screens the fleet-context notes drop to their own
+              full-width lines instead of squeezing into word-per-line columns. */}
+          <div className="flex flex-wrap items-center mt-1 gap-x-3 gap-y-1">
+            <div className="flex items-center space-x-1 shrink-0">
               <span className="text-xs text-gray-500">Confidence:</span>
               <div className="w-24 h-2 bg-gray-200 rounded-full overflow-hidden">
                 <div

src/Web/autopilot-monitor-web/app/sessions/components/TimeAttributionLane.tsx

@@ -144,7 +144,8 @@ export default function TimeAttributionLane({ breakdown }: { breakdown: SessionT
       <div className="mt-4">
         <div className="text-xs font-semibold text-gray-600 mb-1.5">
           ESP-blocking apps
-          {breakdown.espAppsOccupancySeconds !== null && (
+          {/* Loose check: the backend omits null fields (WhenWritingNull), so the client sees undefined. */}
+          {breakdown.espAppsOccupancySeconds != null && (
             <span className="ml-2 font-normal text-gray-400" title="Overlap-merged install time of ESP-blocking apps within the apps phase.">
               critical path {formatDuration(breakdown.espAppsOccupancySeconds)}
             </span>