added anon metrics to recommendations

frontend/src/api/types.ts

@@ -59,8 +59,10 @@ export interface Recommendation {
   predicted_score: number;
   /** "N tasters like you" count (cf) or rating count (popular). */
   contributing_neighbours: number;
-  /** "cf" | "popular" — frontend picks the reason copy. */
-  reason: 'cf' | 'popular';
+  /** Anonymous shop reviews (reviews.io) backing this flavor; 0 if none. */
+  external_reviews: number;
+  /** "cf" | "popular" | "shop" (no community ratings yet — shop reviews only). */
+  reason: 'cf' | 'popular' | 'shop';
 }
 
 export interface DashboardData {
@@ -81,8 +83,10 @@ export interface SimilarFlavor {
   average_rating: number | null;
   is_legacy: boolean;
   is_available: boolean;
-  /** Adjusted-cosine similarity to the target flavor, in (0, 1]. */
+  /** Blended, confidence-discounted similarity. Ranking only — not a "% match". */
   similarity: number;
   /** Users who rated both this flavor and the target. */
   co_raters: number;
+  /** Anonymous shop reviewers who liked both this flavor and the target. */
+  external_co_reviewers: number;
 }

frontend/src/i18n.ts

@@ -40,6 +40,7 @@ const resources = {
         recHeading: 'Tasters like you loved',
         recReasonCf: '{{count}} tasters like you',
         recReasonPopular: 'Popular pick',
+        recReasonShop: '{{count}} shop buyers',
         predictedForYou: 'Predicted for you',
         myRatings: 'My Ratings',
         missing: 'Missing',
@@ -179,6 +180,9 @@ const resources = {
         similarHeading: 'People who liked this also liked',
         similarCoRaters: '{{count}} rated both',
         similarTooltip: 'Tasters who rated both this flavor and the one above',
+        similarShopCoReviewers: '{{count}} shop buyers liked both',
+        similarShopTooltip:
+          'Nobody here has rated both yet — this pairing comes from anonymous shop reviews',
         rateThisFlavor: 'Rate this flavor',
         scoreLabel: 'Your score, 1 to 10',
         submitReview: 'Submit Review',
@@ -603,6 +607,7 @@ const resources = {
         recHeading: 'Tester wie du mochten',
         recReasonCf: '{{count}} Tester wie du',
         recReasonPopular: 'Beliebte Wahl',
+        recReasonShop: '{{count}} Shop-Käufer',
         predictedForYou: 'Für dich vorhergesagt',
         myRatings: 'Meine Bewertungen',
         missing: 'Fehlend',
@@ -742,6 +747,9 @@ const resources = {
         similarHeading: 'Wer das mochte, mochte auch',
         similarCoRaters: '{{count}} bewerteten beide',
         similarTooltip: 'Tester, die diese Sorte und die obige bewertet haben',
+        similarShopCoReviewers: '{{count}} Shop-Käufer mochten beide',
+        similarShopTooltip:
+          'Hier hat noch niemand beide bewertet — diese Paarung stammt aus anonymen Shop-Bewertungen',
         rateThisFlavor: 'Diese Sorte bewerten',
         scoreLabel: 'Deine Bewertung, 1 bis 10',
         submitReview: 'Bewertung abschicken',

frontend/src/pages/dashboard/RecommendationCard.tsx

@@ -15,7 +15,9 @@ export interface RecommendationCardProps {
 
 /**
  * A single recommended flavor. The reason chip is **count-only** (no neighbour
- * names, per product decision): CF → "N tasters like you", popularity → "Popular".
+ * names, per product decision): CF → "N tasters like you", popularity →
+ * "Popular", shop → "N shop buyers" for flavors nobody here has rated yet, whose
+ * score comes from the anonymous reviews.io feed alone.
  */
 const RecommendationCard: React.FC<RecommendationCardProps> = ({ rec }) => {
   const { t } = useTranslation();
@@ -23,7 +25,9 @@ const RecommendationCard: React.FC<RecommendationCardProps> = ({ rec }) => {
   const reasonLabel =
     rec.reason === 'cf'
       ? t('dashboard.recReasonCf', { count: rec.contributing_neighbours })
-      : t('dashboard.recReasonPopular');
+      : rec.reason === 'shop'
+        ? t('dashboard.recReasonShop', { count: rec.external_reviews })
+        : t('dashboard.recReasonPopular');
 
   return (
     <GlassCard

frontend/src/pages/flavors/components/SimilarFlavorsSection.tsx

@@ -81,12 +81,26 @@ const SimilarCard: React.FC<{ item: SimilarFlavor }> = ({ item }) => {
           <Typography variant="caption" color="text.secondary" display="block" sx={{ mb: 1 }}>
             {t(`categories.${item.category_slug}`, { defaultValue: item.category_name })}
           </Typography>
-          <Tooltip title={t('flavorDetail.similarTooltip')}>
+          {/* Pairs the community hasn't co-rated yet can still surface, backed by
+              anonymous shop reviewers — don't claim "0 rated both" for those. */}
+          <Tooltip
+            title={t(
+              item.co_raters > 0
+                ? 'flavorDetail.similarTooltip'
+                : 'flavorDetail.similarShopTooltip',
+            )}
+          >
             <Chip
               size="small"
               icon={<GroupsIcon />}
-              label={t('flavorDetail.similarCoRaters', { count: item.co_raters })}
-              color="primary"
+              label={
+                item.co_raters > 0
+                  ? t('flavorDetail.similarCoRaters', { count: item.co_raters })
+                  : t('flavorDetail.similarShopCoReviewers', {
+                      count: item.external_co_reviewers,
+                    })
+              }
+              color={item.co_raters > 0 ? 'primary' : 'default'}
               variant="outlined"
               sx={{ fontWeight: 700, maxWidth: '100%' }}
             />