diff --git a/tools/generate-index.mjs b/tools/generate-index.mjs
index 46af349..8196f5f 100755
--- a/tools/generate-index.mjs
+++ b/tools/generate-index.mjs
@@ -1,105 +1,67 @@
-import { promises as fs } from "fs";
+#!/usr/bin/env node
+import fs from "fs/promises";
 import path from "path";
-import { fileURLToPath } from "url";
-
-const __dirname = path.dirname(fileURLToPath(import.meta.url));
-const PUBLIC = path.resolve(__dirname, "../public");
-const ROOTS  = ["pinned","posts"];
-const ALLOWED = new Set([".md",".html"]);
-const MAX_BYTES = 64 * 1024; // read head for title parse
-
-// --- helpers ------------------------------------------------------
-async function statSafe(p){ try{ return await fs.stat(p); }catch{ return null; } }
-
-function posixJoin(...xs){ return path.posix.join(...xs); }
+const ROOT = "public";
+const OUT = path.join(ROOT, "index.json");
+const STATIC_TOPLEVEL = new Set(["about","contact","legal"]);
+const MAX_BYTES = 64 * 1024;
 
 function dateFromName(name){
-  const m = name.match(/^(\d{4}-\d{2}-\d{2})/);
-  if (!m) return null;
-  const d = new Date(m[1]); const t = d.getTime();
-  return Number.isFinite(t) ? t : null;
+  const m=name.match(/^(\d{4}-\d{2}-\d{2})/);
+  return m?new Date(m[1]).getTime():null;
 }
-
 async function readHead(abs){
-  const fh = await fs.open(abs,"r");
-  const buf = Buffer.alloc(MAX_BYTES);
-  const { bytesRead } = await fh.read(buf, 0, MAX_BYTES, 0);
+  const fh=await fs.open(abs,"r");
+  const buf=Buffer.alloc(MAX_BYTES);
+  const {bytesRead}=await fh.read(buf,0,MAX_BYTES,0);
   await fh.close();
-  return buf.slice(0, bytesRead).toString("utf8");
+  return buf.slice(0,bytesRead).toString("utf8");
 }
-
-function parseTitle(raw, ext){
-  if (ext===".md"){
-    const m = raw.match(/^\s*#\s+(.+?)\s*$/m);
-    if (m) return m[1].trim();
-  } else if (ext===".html"){
-    const m = raw.match(/<title[^>]*>([^<]+)<\/title>/i);
-    if (m) return m[1].trim();
-  }
+function parseTitle(raw,ext){
+  if(ext===".md") return raw.match(/^\s*#\s+(.+?)\s*$/m)?.[1].trim();
+  if(ext===".html") return raw.match(/<title[^>]*>([^<]+)<\/title>/i)?.[1].trim();
   return null;
 }
 
-// --- walker -------------------------------------------------------
-async function walk(absDir, relBase){
-  const out = [];
-  const ents = await fs.readdir(absDir, { withFileTypes: true });
-  for (const e of ents){
-    if (e.name.startsWith(".")) continue;
-    const abs = path.join(absDir, e.name);
-    const rel = posixJoin(relBase, e.name);
-    const st = await fs.stat(abs);
-
-    if (e.isDirectory()){
-      const children = await walk(abs, rel);
-      out.push({ type:"dir", name:e.name, path:rel, children });
-    } else {
-      const ext = path.extname(e.name);
-      if (!ALLOWED.has(ext)) continue;
-
-      const raw = await readHead(abs);
-      const title = parseTitle(raw, ext) || e.name;
-      const dated = dateFromName(e.name);
-      out.push({
-        type:"file",
-        name:e.name,
-        title,
-        path:rel,
-        ext,
-        pinned: relBase.startsWith("pinned"),
-        mtime: dated ?? st.mtimeMs
-      });
-    }
-  }
-  return out;
-}
-
-function flatten(node, list){
-  if (node.type==="file") list.push(node);
-  else node.children.forEach(c=>flatten(c,list));
-}
-
-// --- build --------------------------------------------------------
-async function build(){
-  const tree = [];
-  const flat = [];
-
-  for (const root of ROOTS){
-    const abs = path.join(PUBLIC, root);
-    const st = await statSafe(abs);
-    if (!st?.isDirectory()){
-      console.warn(`Warning: skipping missing ${root}/`);
+async function walk(relBase=""){
+  const abs=path.join(ROOT,relBase);
+  const entries=await fs.readdir(abs,{withFileTypes:true});
+  const dir={type:"dir",name:path.basename(relBase)||"",path:relBase,children:[]};
+  for(const e of entries){
+    if(e.name.startsWith(".")) continue;
+    const rel=path.posix.join(relBase,e.name);
+    const absPath=path.join(ROOT,rel);
+    if(e.isDirectory()){
+      const top=rel.split("/")[0];
+      if(STATIC_TOPLEVEL.has(top)){continue;}
+      const child=await walk(rel);
+      dir.children.push(child);
       continue;
     }
-    const children = await walk(abs, root);
-    const dirNode = { type:"dir", name:root, path:root, children };
-    tree.push(dirNode);
-    flatten(dirNode, flat);
+    const ext=path.extname(e.name);
+    if(![".md",".html"].includes(ext)) continue;
+    const st=await fs.stat(absPath);
+    const raw=await readHead(absPath);
+    const title=parseTitle(raw,ext)||e.name;
+    const date=dateFromName(e.name);
+    dir.children.push({
+      type:"file",
+      name:e.name,
+      title,
+      path:rel,
+      ext,
+      pinned:rel.startsWith("pinned/"),
+      mtime:date||st.mtimeMs
+    });
   }
-
-  const data = { generatedAt: Date.now(), tree, flat };
-  const outPath = path.join(PUBLIC, "index.json");
-  await fs.writeFile(outPath, JSON.stringify(data, null, 2));
-  console.log(`✅ index.json generated (${flat.length} files)`);
+  return dir;
 }
 
-await build();
\ No newline at end of file
+(async()=>{
+  const tree=await walk();
+  const flat=[];
+  (function flatten(n){for(const c of n.children){if(c.type==="file")flat.push(c);else flatten(c);}})(tree);
+  const sections=[...new Set(flat.map(f=>f.path.split("/")[0]))];
+  await fs.writeFile(OUT,JSON.stringify({tree:tree.children,flat,sections},null,2));
+  console.log("index.json built:",OUT);
+})();
\ No newline at end of file