Add Kimi K2 Thinking model and re-enable brain toggle

frontend/src/components/Marketing.tsx

@@ -27,6 +27,11 @@ const AI_MODELS = [
     alt: "DeepSeek",
     labels: ["DeepSeek R1"]
   },
+  {
+    src: "/badge-kimi-logo.png",
+    alt: "Moonshot",
+    labels: ["Kimi K2"]
+  },
   { src: "/badge-qwen-logo.png", alt: "Qwen", labels: ["Qwen3 Coder", "Qwen3-VL"] },
   { src: "/badge-meta-logo.png", alt: "Meta", labels: ["Meta Llama"] }
 ];
@@ -428,7 +433,7 @@ export function Marketing() {
               We use full-size open models from the biggest providers.
             </p>
           </div>
-          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-5 gap-8">
+          <div className="grid grid-cols-2 md:grid-cols-3 gap-8">
             {AI_MODELS.map((model) => (
               <div key={model.alt} className="flex flex-col items-center">
                 <img

frontend/src/components/ModelSelector.tsx

@@ -68,6 +68,13 @@ export const MODEL_CONFIG: Record<string, ModelCfg> = {
     requiresPro: true,
     tokenLimit: 130000
   },
+  "kimi-k2-thinking": {
+    displayName: "Kimi K2 Thinking",
+    shortName: "Kimi K2",
+    badges: ["Pro", "Reasoning", "New"],
+    requiresPro: true,
+    tokenLimit: 256000
+  },
   "gpt-oss-120b": {
     displayName: "OpenAI GPT-OSS 120B",
     shortName: "GPT-OSS",
@@ -106,8 +113,8 @@ type ModelCategory = "free" | "quick" | "reasoning" | "math" | "image" | "advanc
 export const CATEGORY_MODELS = {
   free: "llama-3.3-70b",
   quick: "gpt-oss-120b",
-  reasoning_on: "deepseek-r1-0528", // R1 with thinking
-  reasoning_off: "deepseek-r1-0528", // R1 without thinking (brain toggle temporarily disabled)
+  reasoning_on: "kimi-k2-thinking", // Kimi K2 with thinking
+  reasoning_off: "deepseek-r1-0528", // DeepSeek R1 without thinking
   math: "qwen3-coder-480b",
   image: "qwen3-vl-30b" // Qwen3-VL for image analysis
 };