Allow four editable weight entries

backend/src/repositories/birdRepository.ts

@@ -930,7 +930,7 @@ export const updateWeightForBird = async (
          FROM weight_records recent
          WHERE recent.bird_id = $2
          ORDER BY recent.recorded_on DESC, recent.created_at DESC
-         LIMIT 3
+         LIMIT 4
        )
      RETURNING id, bird_id, weight_grams, recorded_on::text, notes`,
     [weightId, birdId, weightGrams, recordedOn, notes],

frontend/src/App.tsx

@@ -877,7 +877,7 @@ const formatWeight = (value: number | null) => (value ? `${value.toFixed(1)} g`
 const formatRange = (minGrams: number, maxGrams: number) => `${minGrams.toFixed(0)}-${maxGrams.toFixed(0)} g`;
 const parseDateValue = (value: string) => new Date(`${value}T00:00:00`);
 const getEditableWeights = (entries: WeightRecord[]) =>
-  [...entries].sort((left, right) => right.recordedOn.localeCompare(left.recordedOn)).slice(0, 3);
+  [...entries].sort((left, right) => right.recordedOn.localeCompare(left.recordedOn)).slice(0, 4);
 const daysBetweenDates = (startDate: string, endDate: string) =>
   Math.abs(parseDateValue(endDate).getTime() - parseDateValue(startDate).getTime()) / (24 * 60 * 60 * 1000);
 const addYearsToDate = (date: Date, years: number) => {
@@ -3416,7 +3416,7 @@ function App() {
 
   const handleEditWeight = (weight: WeightRecord) => {
     if (!editableWeightIds.has(weight.id)) {
-      setError('Only the 3 most recent weight entries can be edited.');
+      setError('Only the 4 most recent weight entries can be edited.');
       return;
     }