feat: Update synonym mapping and adjust scoring thresholds for improved food search accuracy

Author: myProjectsRavi

src/handlers/foodHandlers.ts

@@ -27,8 +27,9 @@ import type { ParsedFoodItem } from './naturalLanguageSearchHandler';
 
 // Simple synonym map to improve search hit rates for common regional terms.
 const SYNONYM_MAP: Record<string, string> = {
-  curd: 'yogurt',
+  curd: 'plain yogurt',
   paneer: 'cottage cheese',
+  dahi: 'plain yogurt',
 };
 
 // Shared list of common preparation modifiers for lightweight score tuning.
@@ -207,7 +208,7 @@ const computeFoodScore = (
     let modifierMatchScore = 0;
     for (const mod of normalizedModifiers) {
       if (description.includes(mod)) {
-        modifierMatchScore += 25;
+        modifierMatchScore += 50;
       }
     }
     score += modifierMatchScore;
@@ -295,7 +296,7 @@ export const processSingleFoodItem = async (
 
     const rankedFoods = scoredFoods.sort((a, b) => b.internalScore - a.internalScore);
 
-    if (rankedFoods.length === 0 || rankedFoods[0].internalScore < 40) {
+  if (rankedFoods.length === 0 || rankedFoods[0].internalScore < 35) {
       logger.warn(
         `No relevant ranked results for item: "${effectiveFoodName}"`,
         {
@@ -486,7 +487,7 @@ const getSuggestions = async (
 
     const rankedFoods = scoredFoods.sort((a, b) => b.internalScore - a.internalScore);
 
-    if (rankedFoods.length === 0 || rankedFoods[0].internalScore < 40) {
+    if (rankedFoods.length === 0 || rankedFoods[0].internalScore < 35) {
       return [];
     }