weight edit fixes

backend/src/app.ts

@@ -306,15 +306,6 @@ const weightSchema = z.object({
   recordedOn: dateStringSchema,
   notes: z.string().trim().max(280).optional().or(z.literal('')),
 });
-const weightEditWindowDays = 3;
-
-const getWeightEditEarliestDate = () => {
-  const earliestDate = new Date();
-  earliestDate.setDate(earliestDate.getDate() - (weightEditWindowDays - 1));
-  return earliestDate.toISOString().slice(0, 10);
-};
-
-const isWeightDateEditable = (recordedOn: string) => recordedOn >= getWeightEditEarliestDate();
 
 const vetVisitSchema = z.object({
   visitedOn: dateStringSchema,
@@ -4103,11 +4094,6 @@ app.put(
         return;
       }
 
-      if (!isWeightDateEditable(parsed.data.recordedOn)) {
-        res.status(409).json({ error: 'Weight entries can only be edited for the last 3 days.' });
-        return;
-      }
-
       const weight = await updateWeightForBird(
         req.params.weightId,
         req.params.birdId,

backend/src/repositories/birdRepository.ts

@@ -925,7 +925,13 @@ export const updateWeightForBird = async (
          notes = $5
      WHERE id = $1
        AND bird_id = $2
-       AND recorded_on >= CURRENT_DATE - (2 * INTERVAL '1 day')
+       AND id IN (
+         SELECT recent.id
+         FROM weight_records recent
+         WHERE recent.bird_id = $2
+         ORDER BY recent.recorded_on DESC, recent.created_at DESC
+         LIMIT 3
+       )
      RETURNING id, bird_id, weight_grams, recorded_on::text, notes`,
     [weightId, birdId, weightGrams, recordedOn, notes],
   );