fix(scan): filter MPP-only results from semantic search dropdown

The post-space dropdown was surfacing results whose protocols don't
include x402 (e.g. Parallel API Gateway, MPP-only). Clicking one
submitted the query but the discover results page filters those out,
producing a confusing dead-end. Mirrors the filter already applied in
DiscoverSearchResults so the dropdown only shows clickable x402
services.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: fmhall

apps/scan/src/app/(app)/_components/search/inline-search-suggestions.tsx

@@ -77,7 +77,11 @@ export const InlineSearchSuggestions: React.FC<Props> = ({
 
   const origins = originSearch.data ?? [];
   const resources = resourceSearch.data ?? [];
-  const semanticResults = semanticSearch.data ?? [];
+  // x402scan only surfaces x402 services — MPP-only results from the upstream
+  // semantic API would lead to "No x402 results found" if clicked through.
+  const semanticResults = (semanticSearch.data ?? []).filter(r =>
+    r.protocols.includes('x402')
+  );
   const keywordLoading = originSearch.isLoading || resourceSearch.isLoading;
   const semanticLoading =
     semanticSearch.isLoading || trimmed !== debouncedSemanticInput;