Tune Gemini prompts for stock media search

backend/handlers/api.go

@@ -351,6 +351,14 @@ func min(a, b int) int {
 
 func rankSearchResults(query string, results []services.SearchResult) []services.SearchResult {
 	queryTerms := strings.Fields(strings.ToLower(query))
+	positiveTerms := []string{
+		"b-roll", "b roll", "stock", "stock footage", "footage", "cinematic", "editorial",
+		"establishing", "4k", "hd", "drone", "ambient", "scene", "urban", "cityscape",
+	}
+	negativeTerms := []string{
+		"shocking", "amazing", "crazy", "must watch", "reaction", "gossip", "celebrity",
+		"thumbnail", "meme", "prank", "drama", "breaking", "viral",
+	}
 	type scoredResult struct {
 		item  services.SearchResult
 		score int
@@ -365,6 +373,16 @@ func rankSearchResults(query string, results []services.SearchResult) []services
 				score += 3
 			}
 		}
+		for _, term := range positiveTerms {
+			if strings.Contains(text, term) {
+				score += 2
+			}
+		}
+		for _, term := range negativeTerms {
+			if strings.Contains(text, term) {
+				score -= 4
+			}
+		}
 		if result.ThumbnailURL != "" {
 			score += 2
 		}
@@ -372,9 +390,9 @@ func rankSearchResults(query string, results []services.SearchResult) []services
 		case "Google Video":
 			score += 3
 		case "Envato":
-			score += 2
+			score += 4
 		case "Artgrid":
-			score += 2
+			score += 4
 		}
 		scored = append(scored, scoredResult{item: result, score: score})
 	}