AI 小说工坊：主编 + 作家多模型协作写作应用

- Nuxt 4 + Nuxt UI 4 + AI SDK 7 + Drizzle/SQLite
- 主编规划大纲与章节简报、选派作家；作家流式写入章节文件并实时推送前端
- 逐章确认模式（默认）与自动模式；摘要与故事记忆
- 酒馆角色卡（PNG/JSON，V1-V3）与世界书导入
- 自定义最高优先级系统提示词、审稿/修改/多版本、任务日志与提示词检视
- 模拟 LLM 服务与端到端测试脚本

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/utils/http.ts

@@ -0,0 +1,42 @@
+import type { H3Event } from 'h3'
+import type { output, ZodObject, ZodType } from 'zod'
+
+async function readRawJson(event: H3Event): Promise<Record<string, unknown>> {
+  const raw = await readRawBody(event, 'utf8')
+  if (!raw) return {}
+  try { return JSON.parse(raw) }
+  catch { throw createError({ statusCode: 400, message: '请求体不是合法的 JSON' }) }
+}
+
+function validationError(issues: { path: PropertyKey[], message: string }[]) {
+  const first = issues[0]
+  return createError({ statusCode: 400, message: `参数错误：${first?.path.map(String).join('.') || ''} ${first?.message || ''}`.trim() })
+}
+
+export async function readJson<T>(event: H3Event, schema: ZodType<T>): Promise<T> {
+  const parsed = schema.safeParse(await readRawJson(event))
+  if (!parsed.success) throw validationError(parsed.error.issues)
+  return parsed.data
+}
+
+/**
+ * 读取部分更新的请求体：只保留请求中实际出现的字段
+ * （zod 4 中 optional 包裹的 default 仍会生效，直接 partial() 会把缺省字段覆盖成默认值）
+ */
+export async function readPatch<S extends ZodObject>(event: H3Event, schema: S): Promise<Partial<output<S>>> {
+  const data = await readRawJson(event)
+  const parsed = schema.partial().safeParse(data)
+  if (!parsed.success) throw validationError(parsed.error.issues)
+  const result = parsed.data as Record<string, unknown>
+  const out: Record<string, unknown> = {}
+  for (const k of Object.keys(data)) {
+    if (k in result) out[k] = result[k]
+  }
+  return out as Partial<output<S>>
+}
+
+export function param(event: H3Event, name = 'id') {
+  const v = getRouterParam(event, name)
+  if (!v) throw createError({ statusCode: 400, message: `缺少参数 ${name}` })
+  return v
+}