feat: fetch and pass previous weather entries through component tree

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/weather/WeatherCard.tsx

@@ -22,14 +22,22 @@ interface WeatherEntry {
   };
 }
 
+type PreviousEntry = {
+  performanceEmoji: string | null;
+  moralEmoji: string | null;
+  fluxEmoji: string | null;
+  valueCreationEmoji: string | null;
+};
+
 interface WeatherCardProps {
   sessionId: string;
   currentUserId: string;
   entry: WeatherEntry;
   canEdit: boolean;
+  previousEntry?: PreviousEntry | null;
 }
 
-export function WeatherCard({ sessionId, currentUserId, entry, canEdit }: WeatherCardProps) {
+export function WeatherCard({ sessionId, currentUserId, entry, canEdit, previousEntry }: WeatherCardProps) {
   const [isPending, startTransition] = useTransition();
   const [notes, setNotes] = useState(entry.notes || '');
   const [performanceEmoji, setPerformanceEmoji] = useState(entry.performanceEmoji || null);
@@ -104,6 +112,9 @@ export function WeatherCard({ sessionId, currentUserId, entry, canEdit }: Weathe
   // For now, we'll use a placeholder - in real app, you'd pass user info as prop
   const user = entry.user;
 
+  // previousEntry is available for future use in Task 6
+  void previousEntry;
+
   return (
     <tr className={`border-b border-border ${isPending ? 'opacity-50' : ''}`}>
       {/* User column */}