docs(docs): restructure documentation paths and add new introduction file

docs/content/index.mdx

@@ -1,16 +0,0 @@
----
-title: Getting Started
-description: Welcome to your new Blume docs.
-sidebar:
-  icon: home
----
-
-## Coding Patterns
-
-Welcome to **Blume** — markdown-first docs powered by Astro and Vite.
-
-## System Design
-
-Edit `content/index.mdx` to get started, then run `blume dev`.
-
-## Behavioral

docs/index.mdx

@@ -0,0 +1,10 @@
+---
+title: Introduction
+description: Welcome to your new Blume docs.
+---
+
+# Introduction
+
+Welcome to **Blume** — markdown-first docs powered by Astro and Vite.
+
+Edit `docs/index.mdx` to get started, then run `blume dev`.

docs/worker.js

@@ -1,28 +0,0 @@
-export default {
-  async fetch(request, env) {
-    const auth = request.headers.get("Authorization") ?? "";
-    if (auth.startsWith("Basic ")) {
-      let ok = false;
-      try {
-        const decoded = atob(auth.slice(6));
-        const password = decoded.slice(decoded.indexOf(":") + 1); // password may contain ':'
-        ok = await passwordMatches(password, env.SITE_PASSWORD);
-      } catch {}
-      if (ok) return env.ASSETS.fetch(request);
-    }
-    return new Response("Authentication required", {
-      status: 401,
-      headers: { "WWW-Authenticate": 'Basic realm="leetcode-docs", charset="UTF-8"' },
-    });
-  },
-};
-
-// timingSafeEqual needs equal-length buffers → hash both sides first
-async function passwordMatches(candidate, expected) {
-  const enc = new TextEncoder();
-  const [a, b] = await Promise.all([
-    crypto.subtle.digest("SHA-256", enc.encode(candidate)),
-    crypto.subtle.digest("SHA-256", enc.encode(expected)),
-  ]);
-  return crypto.subtle.timingSafeEqual(a, b);
-}