feat(docs): real provider logos in the models catalog

Vendor 29 mono brand logos (currentColor SVG) from @hanzoai/icons — OpenAI,
Anthropic, Google, Qwen, Mistral, DeepSeek, NVIDIA, Meta, Cohere, Perplexity,
xAI, Amazon, Microsoft, HuggingFace, Zhipu, MiniMax, Moonshot, and more —
inlined as strings so the static export needs no runtime dep or CDN. ProviderChip
renders the real logo when available, monogram chip otherwise (long-tail
community providers with no brand mark). Keyed by normalized provider name.

apps/docs/components/models-catalog.tsx

@@ -6,6 +6,7 @@
 // theme-aware via Fumadocs fd-* tokens.
 import { useEffect, useMemo, useState } from 'react';
 import { Search, Copy, Check, Cpu, Sparkles, Zap, Box } from 'lucide-react';
+import { PROVIDER_ICONS, providerKey } from '@/components/provider-icons';
 
 const ENDPOINT = 'https://api.hanzo.ai/v1/models';
 
@@ -56,6 +57,17 @@ function initials(name: string): string {
   return name.replace(/[^\p{L}\p{N}]/gu, '').slice(0, 2).toUpperCase() || '?';
 }
 function ProviderChip({ name }: { name: string }) {
+  // Real brand logo (mono, currentColor) when we have one; monogram otherwise.
+  const svg = PROVIDER_ICONS[providerKey(name)];
+  if (svg) {
+    return (
+      <span
+        aria-hidden
+        className="inline-flex size-5 shrink-0 items-center justify-center text-fd-foreground [&>svg]:size-[18px]"
+        dangerouslySetInnerHTML={{ __html: svg }}
+      />
+    );
+  }
   const hue = hashHue(name.toLowerCase());
   return (
     <span