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。

scripts/dev.ts

@@ -7,7 +7,7 @@ const configPath = process.argv[2];
 
 const env = {
   ...process.env,
-  BACKEND_PORT: process.env.PORT ?? "3000",
+  BACKEND_PORT: process.env["PORT"] ?? "3000",
 };
 
 const children: ChildProcessInfo[] = [
@@ -15,16 +15,16 @@ const children: ChildProcessInfo[] = [
     name: "server",
     process: Bun.spawn(["bun", "run", "dev:server", ...(configPath ? [configPath] : [])], {
       env,
-      stdout: "inherit",
       stderr: "inherit",
+      stdout: "inherit",
     }),
   },
   {
     name: "web",
     process: Bun.spawn(["bun", "run", "dev:web"], {
       env,
-      stdout: "inherit",
       stderr: "inherit",
+      stdout: "inherit",
     }),
   },
 ];
@@ -46,7 +46,7 @@ process.on("SIGTERM", () => {
 });
 
 const firstExit = await Promise.race(
-  children.map(async (child) => ({ name: child.name, code: await child.process.exited })),
+  children.map(async (child) => ({ code: await child.process.exited, name: child.name })),
 );
 
 stopChildren();