feat: M4 文风 + M5 生成/多provider/Skill + Kimi Code 订阅接入 + 本地联调修复

M4（文风）: style-auditor 双轨（提取指纹/漂移第四审）+ jobs 长任务框架(zombie reaper) + 回炉 refine + GET /style read-back。
M5（生成+扩展）: worldbuilder/character-gen（入库 continuity 409 gate + partition_writes 白名单 + schema→JSONB 形变）；
  网关多 provider 回退链/熔断/能力降级（Anthropic/Gemini 适配器）；Skill registry + 表权限沙箱 + 规则；
  前端 角色生成器/世界观/Codex/规则页/技能库/⌘K 命令面板。
K1（Kimi Code 订阅接入）: OAuth device-flow（kimi-code）+ 静态 Console key（kimi-code-key）两路径；
  coding 端点 KimiCLI 伪造头（实测 UA allow-list 门禁，缺则 403）+ JSON 模式结构化（thinking ⊥ tool_choice）。
本地联调修复: CORS 中间件；assemble 注入 premise+「写第N章」指令（修空 prompt 400）；
  GET /outline·/draft read-back + 大纲/工作台/审稿页重载；写页 client/server 常量边界 + notFound 健壮化；
  字数 toLocaleString locale 水合；审稿页终稿从已存草稿 seed（修 accept 422）。
门禁: backend ruff/mypy(157)/alembic 无漂移/pytest 451 · frontend lint/tsc/vitest/build。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/web/lib/rules/rules.test.ts

@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest";
+
+import type { RuleView } from "@/lib/api/types";
+import {
+  buildRuleCreateRequest,
+  groupByLevel,
+  hasUsableContent,
+  isRuleLevel,
+  RULE_LEVELS,
+} from "./rules";
+
+describe("isRuleLevel", () => {
+  it("accepts the four known levels only", () => {
+    for (const lv of RULE_LEVELS) expect(isRuleLevel(lv)).toBe(true);
+    expect(isRuleLevel("bogus")).toBe(false);
+  });
+});
+
+describe("groupByLevel", () => {
+  it("groups rules by level, unknown level falls to project", () => {
+    const rules: RuleView[] = [
+      { level: "global", content: "g1" },
+      { level: "project", content: "p1" },
+      { level: "weird", content: "x1" },
+    ];
+    const groups = groupByLevel(rules);
+    expect(groups.global).toEqual([{ level: "global", content: "g1" }]);
+    expect(groups.project).toEqual([
+      { level: "project", content: "p1" },
+      { level: "weird", content: "x1" },
+    ]);
+    expect(groups.genre).toEqual([]);
+  });
+
+  it("handles undefined", () => {
+    expect(groupByLevel(undefined).style).toEqual([]);
+  });
+});
+
+describe("buildRuleCreateRequest", () => {
+  it("trims content", () => {
+    expect(buildRuleCreateRequest("project", "  禁现代词  ")).toEqual({
+      level: "project",
+      content: "禁现代词",
+    });
+  });
+});
+
+describe("hasUsableContent", () => {
+  it("true only when non-blank", () => {
+    expect(hasUsableContent("  ")).toBe(false);
+    expect(hasUsableContent(" x ")).toBe(true);
+  });
+});

apps/web/lib/rules/rules.ts

@@ -0,0 +1,58 @@
+// 规则页纯逻辑：四级合并展示、请求体组装、级别文案。
+// 对齐 C3 扩（GET/POST .../rules）。纯逻辑，便于 node 环境单测。
+
+import type { RuleCreateRequest, RuleView } from "@/lib/api/types";
+
+// 四级规则（global→genre→style→project，越具体越优先；对齐后端 RuleCreateRequest Literal）。
+export type RuleLevel = "global" | "genre" | "style" | "project";
+
+export const RULE_LEVELS: readonly RuleLevel[] = [
+  "global",
+  "genre",
+  "style",
+  "project",
+] as const;
+
+export const RULE_LEVEL_LABELS: Record<RuleLevel, string> = {
+  global: "全局",
+  genre: "题材",
+  style: "文风",
+  project: "本作",
+};
+
+export function isRuleLevel(v: string): v is RuleLevel {
+  return (
+    v === "global" || v === "genre" || v === "style" || v === "project"
+  );
+}
+
+export type RuleGroups = Record<RuleLevel, RuleView[]>;
+
+function emptyGroups(): RuleGroups {
+  return { global: [], genre: [], style: [], project: [] };
+}
+
+// 按 level 分组（未知 level 落 project 兜底，保持服务端顺序）。
+export function groupByLevel(
+  rules: readonly RuleView[] | undefined,
+): RuleGroups {
+  const groups = emptyGroups();
+  for (const rule of rules ?? []) {
+    const level = isRuleLevel(rule.level) ? rule.level : "project";
+    groups[level] = [...groups[level], rule];
+  }
+  return groups;
+}
+
+// 组装新增规则请求体（去空白）。
+export function buildRuleCreateRequest(
+  level: RuleLevel,
+  content: string,
+): RuleCreateRequest {
+  return { level, content: content.trim() };
+}
+
+// 内容是否可提交（非空白）。
+export function hasUsableContent(content: string): boolean {
+  return content.trim().length > 0;
+}

apps/web/lib/rules/useRules.ts

@@ -0,0 +1,62 @@
+"use client";
+
+import { useCallback, useState } from "react";
+
+import { api } from "@/lib/api/client";
+import { useToast } from "@/components/Toast";
+import type { RuleView } from "@/lib/api/types";
+import { buildRuleCreateRequest, hasUsableContent, type RuleLevel } from "./rules";
+
+export interface UseRules {
+  items: RuleView[];
+  busy: boolean;
+  // 新增一条规则（乐观追加 + 失败回滚 + Toast）。
+  add: (
+    projectId: string,
+    level: RuleLevel,
+    content: string,
+  ) => Promise<boolean>;
+}
+
+// 规则页（UX §7）：列出 + 新增规则。乐观追加，失败回滚（仿 useForeshadow）。
+export function useRules(initial: RuleView[]): UseRules {
+  const [items, setItems] = useState<RuleView[]>(initial);
+  const [busy, setBusy] = useState(false);
+  const toast = useToast();
+
+  const add = useCallback<UseRules["add"]>(
+    async (projectId, level, content) => {
+      if (!hasUsableContent(content)) {
+        toast("请填写规则正文。", "error");
+        return false;
+      }
+      const snapshot = items;
+      const optimistic: RuleView = { level, content: content.trim() };
+      setItems((prev) => [...prev, optimistic]);
+      setBusy(true);
+      try {
+        const { data, error } = await api.POST(
+          "/projects/{project_id}/rules",
+          {
+            params: { path: { project_id: projectId } },
+            body: buildRuleCreateRequest(level, content),
+          },
+        );
+        if (error || !data) {
+          setItems(snapshot); // 回滚
+          toast("新增规则失败，请稍后重试。", "error");
+          return false;
+        }
+        // 用服务端权威行替换乐观行（去掉乐观项、追加返回项）。
+        setItems((prev) => [...prev.slice(0, snapshot.length), data]);
+        toast("已新增规则", "success");
+        return true;
+      } finally {
+        setBusy(false);
+      }
+    },
+    [items, toast],
+  );
+
+  return { items, busy, add };
+}