feat: publish long-context deep dive

src/data/chapters.ts

@@ -108,14 +108,14 @@ export const chapters: Chapter[] = [
   },
   {
     number: "07",
-    slug: "architecture/long-context",
+    slug: "long-context",
     title: "长上下文与高效注意力",
     kicker: "LONG CONTEXT",
     question: "从 8K 到 1M Token，真正昂贵的是什么？",
     summary: "比较稀疏/线性注意力、FlashAttention、MLA、状态空间模型、Delta Rule、KDA 与混合注意力。",
-    status: "researching",
-    progress: 31,
-    papers: 24,
+    status: "published",
+    progress: 72,
+    papers: 26,
     prerequisites: ["02", "03"],
     highlights: ["KV Cache", "MLA", "KDA"],
   },