fix: additional real bug fixes

Author: Saurabh Kumar Bajpai

src/app/api/goals/route.ts

@@ -177,7 +177,7 @@ export async function GET() {
     }
   }
 
-  const goalsWithHistory = processedGoals.map((goal) => ({
+  const goalsWithHistory = (processedGoals ?? []).map((goal) => ({
     ...goal,
     last_period: latestHistoryByGoal.get(goal.id) ?? null,
   }));

src/components/GoalTracker.tsx

@@ -429,7 +429,7 @@ export default function GoalTracker() {
       const data: { goal: Goal } = await response.json();
 
       setGoals((currentGoals) =>
-        currentGoals.map((goal) => (goal.id === data.goal.id ? data.goal : goal))
+        (currentGoals ?? []).map((goal) => (goal.id === data.goal.id ? data.goal : goal))
       );
     } catch {
       setShareError("Failed to update goal sharing. Please check your connection.");