fix(compare): dedup keywords so same-vendor pairs don't repeat vendor name

H100 vs H200 was producing 'NVIDIA, NVIDIA' in the Dataset keywords list, and MI300X vs MI325X was producing 'AMD, AMD'. Wrap the keyword list in a Set so each value appears at most once. Cross-vendor pairs still get both 'NVIDIA, AMD'.

Author: Oseltamivir

packages/app/src/lib/compare-ssr.ts

@@ -912,18 +912,20 @@ export function buildJsonLd(
               measurementTechnique:
                 'Open-source automated GPU CI/CD inference benchmark (github.com/SemiAnalysisAI/InferenceX)',
               keywords: [
-                'AI inference benchmark',
-                'GPU comparison',
-                variant === 'per-dollar' ? 'cost per million tokens' : 'inference latency',
-                variant === 'per-dollar' ? 'performance per dollar' : 'tokens per second',
-                model.label,
-                aLabel,
-                bLabel,
-                HW_REGISTRY[a]?.vendor,
-                HW_REGISTRY[b]?.vendor,
-              ]
-                .filter(Boolean)
-                .join(', '),
+                ...new Set(
+                  [
+                    'AI inference benchmark',
+                    'GPU comparison',
+                    variant === 'per-dollar' ? 'cost per million tokens' : 'inference latency',
+                    variant === 'per-dollar' ? 'performance per dollar' : 'tokens per second',
+                    model.label,
+                    aLabel,
+                    bLabel,
+                    HW_REGISTRY[a]?.vendor,
+                    HW_REGISTRY[b]?.vendor,
+                  ].filter(Boolean),
+                ),
+              ].join(', '),
               ...(datePublished && { datePublished }),
               ...(dateModified && { dateModified }),
               creator: {