feat: publish native multimodal chapter

src/pages/index.astro

@@ -15,6 +15,7 @@ const routes: Record<string, string> = {
   "post-training/alignment": "/post-training/alignment/",
   reasoning: "/reasoning/",
   agents: "/agents/",
+  multimodal: "/multimodal/",
   "training-systems": "/training-systems/",
   "systems/numerics": "/systems/numerics/",
 };
@@ -93,6 +94,7 @@ const paths = [
           <a class="button" href="/post-training/alignment/">后训练与偏好专题</a>
           <a class="button" href="/reasoning/">推理专题</a>
           <a class="button" href="/agents/">Agent 专题</a>
+          <a class="button" href="/multimodal/">原生多模态专题</a>
           <a class="button" href="/training-systems/">训练系统专题</a>
           <a class="button" href="/systems/numerics/">数值与优化专题</a>
         </div>
@@ -104,7 +106,7 @@ const paths = [
         <div class="hero-stats">
           <div><b>16</b><span>核心专题</span></div>
           <div><b>151</b><span>K3 报告来源</span></div>
-          <div><b>314</b><span>关键论文索引</span></div>
+          <div><b>355</b><span>关键论文索引</span></div>
           <div><b>47p</b><span>K3 技术报告</span></div>
         </div>
       </aside>
@@ -118,6 +120,22 @@ const paths = [
 
   <section class="section compact release-section" id="new-chapters">
     <div class="release-grid">
+      <a class="release-card multimodal-release" href="/multimodal/">
+        <div>
+          <p class="eyebrow"><span>NEW / CHAPTER 13</span> PIXELS · TOKENS · NATIVE MULTIMODALITY</p>
+          <h2>原生多模态不等于移除视觉塔：真正改变的是数据、目标、优化与行为闭环</h2>
+          <p>
+            用语义空间、连接器、分辨率、OCR、视频、训练、幻觉、评测与 Agent 十六张账，
+            从 ViT、CLIP 和 LLaVA 走到 DeepSeek-VL / Janus / OCR 三分支，以及 Kimi 三代 MoonViT 与 K3 从头共同 NTP。
+          </p>
+        </div>
+        <dl>
+          <div><dt>LINEAGE</dt><dd>2012 → 2026</dd></div>
+          <div><dt>NODES</dt><dd>55 个一手节点</dd></div>
+          <div><dt>LAB</dt><dd>Token · 连接器 · 光学压缩 · 视觉闭环</dd></div>
+        </dl>
+        <span class="release-arrow" aria-hidden="true">从像素进入可验证视觉行动 →</span>
+      </a>
       <a class="release-card agent-release" href="/agents/">
         <div>
           <p class="eyebrow"><span>NEW / CHAPTER 12</span> AGENTS · TOOL USE · ENVIRONMENTS</p>