chore: 强化代码质量与风格检查体系

ESLint 升级到 recommended-type-checked + stylistic-type-checked，
引入 perfectionist 导入排序和 import 插件导入验证。

Prettier 显式声明全部格式化参数，消除跨环境差异。
TypeScript 启用 noUnusedLocals 和 noPropertyAccessFromIndexSignature。
完善 ignore 列表，排除 .agents/、bun.lock、data/ 等。
引入 husky + lint-staged（pre-commit）+ commitlint（commit-msg）。
更新 DEVELOPMENT.md 代码质量章节。
修复所有新增规则检测到的类型和风格违规。

src/server/static.ts

@@ -1,45 +1,7 @@
 import type { RuntimeMode } from "../shared/api";
-import { createHeaders } from "./helpers";
 import type { StaticAssets } from "./app";
 
-export function serveStaticAsset(pathname: string, staticAssets: StaticAssets, mode: RuntimeMode): Response {
-  if (pathname === "/") {
-    return htmlResponse(staticAssets.indexHtml, mode);
-  }
-
-  const asset = staticAssets.files[pathname];
-
-  if (asset) {
-    return new Response(asset, {
-      headers: createHeaders(mode, {
-        "Content-Type": contentTypeFor(pathname),
-        "Cache-Control": "public, max-age=31536000, immutable",
-      }),
-    });
-  }
-
-  if (pathname.startsWith("/assets/") || hasFileExtension(pathname)) {
-    return new Response("Not Found", {
-      status: 404,
-      headers: createHeaders(mode, { "Content-Type": "text/plain; charset=utf-8" }),
-    });
-  }
-
-  return htmlResponse(staticAssets.indexHtml, mode);
-}
-
-export function htmlResponse(indexHtml: Blob, mode: RuntimeMode): Response {
-  return new Response(indexHtml, {
-    headers: createHeaders(mode, {
-      "Content-Type": "text/html; charset=utf-8",
-      "Cache-Control": "no-cache",
-    }),
-  });
-}
-
-export function hasFileExtension(pathname: string): boolean {
-  return /\/[^/]+\.[^/]+$/.test(pathname);
-}
+import { createHeaders } from "./helpers";
 
 export function contentTypeFor(pathname: string): string {
   if (pathname.endsWith(".js") || pathname.endsWith(".mjs")) return "text/javascript; charset=utf-8";
@@ -52,3 +14,42 @@ export function contentTypeFor(pathname: string): string {
 
   return "application/octet-stream";
 }
+
+export function hasFileExtension(pathname: string): boolean {
+  return /\/[^/]+\.[^/]+$/.test(pathname);
+}
+
+export function htmlResponse(indexHtml: Blob, mode: RuntimeMode): Response {
+  return new Response(indexHtml, {
+    headers: createHeaders(mode, {
+      "Cache-Control": "no-cache",
+      "Content-Type": "text/html; charset=utf-8",
+    }),
+  });
+}
+
+export function serveStaticAsset(pathname: string, staticAssets: StaticAssets, mode: RuntimeMode): Response {
+  if (pathname === "/") {
+    return htmlResponse(staticAssets.indexHtml, mode);
+  }
+
+  const asset = staticAssets.files[pathname];
+
+  if (asset) {
+    return new Response(asset, {
+      headers: createHeaders(mode, {
+        "Cache-Control": "public, max-age=31536000, immutable",
+        "Content-Type": contentTypeFor(pathname),
+      }),
+    });
+  }
+
+  if (pathname.startsWith("/assets/") || hasFileExtension(pathname)) {
+    return new Response("Not Found", {
+      headers: createHeaders(mode, { "Content-Type": "text/plain; charset=utf-8" }),
+      status: 404,
+    });
+  }
+
+  return htmlResponse(staticAssets.indexHtml, mode);
+}