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/generation/useCharacterGen.ts

@@ -0,0 +1,150 @@
+"use client";
+
+import { useCallback, useState } from "react";
+
+import { api } from "@/lib/api/client";
+import { useToast } from "@/components/Toast";
+import type {
+  CharacterCardView,
+  CharacterIngestResponse,
+} from "@/lib/api/types";
+import {
+  buildCharacterGenerateRequest,
+  buildCharacterIngestRequest,
+  extractIngestConflicts,
+  generationErrorMessage,
+  type IngestConflicts,
+} from "./cards";
+
+export type CharacterGenStatus = "idle" | "generating" | "preview" | "error";
+export type IngestStatus = "idle" | "ingesting" | "conflict" | "done" | "error";
+
+export interface CharacterGenInput {
+  projectId: string;
+  brief: string;
+  count: number;
+  role?: string | null;
+}
+
+export interface UseCharacterGen {
+  genStatus: CharacterGenStatus;
+  cards: CharacterCardView[];
+  ingestStatus: IngestStatus;
+  // 409 冲突详情（待作者裁决）；裁决后带 acknowledge 重发。
+  conflicts: IngestConflicts | null;
+  created: string[];
+  generate: (input: CharacterGenInput) => Promise<void>;
+  // 入库选中卡；acknowledge 用于过 409（已查看冲突后重发）。
+  ingest: (
+    projectId: string,
+    cards: readonly CharacterCardView[],
+    acknowledge?: boolean,
+  ) => Promise<boolean>;
+  reset: () => void;
+}
+
+// 角色生成器（UX §6.6）：生成预览 → 作者选/改 → 入库（处理 409 裁决流）。
+export function useCharacterGen(): UseCharacterGen {
+  const [genStatus, setGenStatus] = useState<CharacterGenStatus>("idle");
+  const [cards, setCards] = useState<CharacterCardView[]>([]);
+  const [ingestStatus, setIngestStatus] = useState<IngestStatus>("idle");
+  const [conflicts, setConflicts] = useState<IngestConflicts | null>(null);
+  const [created, setCreated] = useState<string[]>([]);
+  const toast = useToast();
+
+  const generate = useCallback<UseCharacterGen["generate"]>(
+    async ({ projectId, brief, count, role }) => {
+      setGenStatus("generating");
+      setCards([]);
+      setConflicts(null);
+      setIngestStatus("idle");
+      try {
+        const { data, error } = await api.POST(
+          "/projects/{project_id}/characters/generate",
+          {
+            params: { path: { project_id: projectId } },
+            body: buildCharacterGenerateRequest(brief, count, role),
+          },
+        );
+        if (error || !data) {
+          setGenStatus("error");
+          toast(generationErrorMessage(error), "error");
+          return;
+        }
+        setCards(data.cards ?? []);
+        setGenStatus("preview");
+      } catch {
+        setGenStatus("error");
+        toast("生成请求异常，请检查网络。", "error");
+      }
+    },
+    [toast],
+  );
+
+  const ingest = useCallback<UseCharacterGen["ingest"]>(
+    async (projectId, ingestCards, acknowledge = false) => {
+      if (ingestCards.length === 0) {
+        toast("请至少选择一张角色卡。", "error");
+        return false;
+      }
+      setIngestStatus("ingesting");
+      try {
+        const { data, error } = await api.POST(
+          "/projects/{project_id}/characters",
+          {
+            params: { path: { project_id: projectId } },
+            body: buildCharacterIngestRequest(ingestCards, acknowledge),
+          },
+        );
+        if (error || !data) {
+          const conflict = extractIngestConflicts(error);
+          if (conflict) {
+            // 409 CONFLICT_UNRESOLVED：展示冲突让作者裁决，再带 acknowledge 重发。
+            setConflicts(conflict);
+            setIngestStatus("conflict");
+            return false;
+          }
+          setIngestStatus("error");
+          toast(generationErrorMessage(error), "error");
+          return false;
+        }
+        const result = data as CharacterIngestResponse;
+        setCreated(result.created ?? []);
+        setConflicts(null);
+        setIngestStatus("done");
+        toast(`已入库 ${result.created?.length ?? 0} 个角色`, "success");
+        if (result.rejected_tables && result.rejected_tables.length > 0) {
+          toast(
+            `越权写表被丢弃：${result.rejected_tables.join("、")}`,
+            "info",
+          );
+        }
+        return true;
+      } catch {
+        setIngestStatus("error");
+        toast("入库请求异常，请检查网络。", "error");
+        return false;
+      }
+    },
+    [toast],
+  );
+
+  const reset = useCallback((): void => {
+    setGenStatus("idle");
+    setCards([]);
+    setIngestStatus("idle");
+    setConflicts(null);
+    setCreated([]);
+  }, []);
+
+  return {
+    genStatus,
+    cards,
+    ingestStatus,
+    conflicts,
+    created,
+    generate,
+    ingest,
+    reset,
+  };
+}