feat: fetch and pass previous weather entries through component tree

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

src/components/weather/WeatherBoard.tsx

@@ -28,6 +28,13 @@ interface Share {
   };
 }
 
+type PreviousEntry = {
+  performanceEmoji: string | null;
+  moralEmoji: string | null;
+  fluxEmoji: string | null;
+  valueCreationEmoji: string | null;
+};
+
 interface WeatherBoardProps {
   sessionId: string;
   currentUserId: string;
@@ -44,6 +51,7 @@ interface WeatherBoardProps {
     email: string;
   };
   canEdit: boolean;
+  previousEntries: Map<string, PreviousEntry>;
 }
 
 export function WeatherBoard({
@@ -53,6 +61,7 @@ export function WeatherBoard({
   shares,
   owner,
   canEdit,
+  previousEntries,
 }: WeatherBoardProps) {
   // Get all users who have access: owner + shared users
   const allUsers = useMemo(() => {
@@ -137,6 +146,7 @@ export function WeatherBoard({
               currentUserId={currentUserId}
               entry={entry}
               canEdit={canEdit}
+              previousEntry={previousEntries.get(entry.userId) ?? null}
             />
           ))}
         </tbody>

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 */}