feat(web): 立项新增 基调/结局/视角 三字段（书级常量入 stable_core 缓存前缀）

灵感计划 §3④ + §4 D 枚举决策：
- projects 表加 tone/ending_type/narrative_pov（Text nullable、无 CHECK，同 genre/structure；
  迁移 e5f6a7b8c9d0 nullable 免 backfill）。
- ProjectCreateRequest/ProjectResponse + domain ProjectCreate/ProjectView 全链路透传（snake_case）。
- 完整 stable_core 链路：ProjectSpecView + SqlProjectSpecRepo.spec + _build_spec_section 渲染进
  「作品蓝本」块——书级常量随书稳定，字节稳定守缓存前缀不变量 #9，绝不入 volatile。
- 前端 wizard.ts 三字段 + 预设数组 TONES/ENDING_TYPES/NARRATIVE_POVS + ProjectWizard 控件与确认页回显。
- 契约变更已 pnpm gen:api + memory/contracts.md 登记。

apps/web/components/ProjectWizard.tsx

@@ -15,10 +15,13 @@ import { TextInput } from "@/components/ui/TextInput";
 import { api } from "@/lib/api/client";
 import { buttonClass } from "@/lib/ui/variants";
 import {
+  ENDING_TYPES,
   GENRES,
+  NARRATIVE_POVS,
   SELLING_POINT_PRESETS,
   STEP_TITLES,
   STRUCTURES,
+  TONES,
   WIZARD_STEPS,
   canAdvance,
   canSubmit,
@@ -267,6 +270,37 @@ function StepPremise({ form, update }: StepProps) {
           placeholder="例：抗争与代价"
         />
       </Field>
+      <Field label="基调">
+        <Select
+          value={form.tone}
+          onChange={(e) => update({ tone: e.target.value })}
+        >
+          <option value="">未选择</option>
+          {TONES.map((t) => (
+            <option key={t} value={t}>
+              {t}
+            </option>
+          ))}
+        </Select>
+      </Field>
+      <Field label="叙事视角">
+        <SegmentedControl
+          ariaLabel="叙事视角"
+          className="flex-wrap"
+          value={form.narrativePov}
+          onChange={(narrativePov) => update({ narrativePov })}
+          options={NARRATIVE_POVS.map((p) => ({ value: p, label: p }))}
+        />
+      </Field>
+      <Field label="结局取向">
+        <SegmentedControl
+          ariaLabel="结局取向"
+          className="flex-wrap"
+          value={form.endingType}
+          onChange={(endingType) => update({ endingType })}
+          options={ENDING_TYPES.map((e) => ({ value: e, label: e }))}
+        />
+      </Field>
     </div>
   );
 }
@@ -302,6 +336,9 @@ function StepConfirm({ form }: { form: WizardForm }) {
       label: "核心卖点",
       value: form.sellingPoints.length > 0 ? form.sellingPoints.join("、") : "未选择",
     },
+    { label: "基调", value: form.tone || "未选择" },
+    { label: "叙事视角", value: form.narrativePov || "未选择" },
+    { label: "结局取向", value: form.endingType || "未选择" },
   ];
   return (
     <div>

apps/web/lib/api/schema.d.ts

@@ -1518,6 +1518,12 @@ export interface components {
             selling_points?: string[];
             /** Structure */
             structure?: string | null;
+            /** Tone */
+            tone?: string | null;
+            /** Ending Type */
+            ending_type?: string | null;
+            /** Narrative Pov */
+            narrative_pov?: string | null;
         };
         /**
          * ProjectListResponse
@@ -1551,6 +1557,12 @@ export interface components {
             selling_points?: string[];
             /** Structure */
             structure?: string | null;
+            /** Tone */
+            tone?: string | null;
+            /** Ending Type */
+            ending_type?: string | null;
+            /** Narrative Pov */
+            narrative_pov?: string | null;
             /**
              * Updated At
              * @description 项目最近更新时间

apps/web/lib/wizard/wizard.test.ts

@@ -57,6 +57,9 @@ describe("toCreateRequest", () => {
       premise: "  ",
       protagonist: "",
       theme: "抗争",
+      tone: "",
+      endingType: "",
+      narrativePov: "",
     };
     expect(toCreateRequest(form)).toEqual({
       title: "逐光而行",
@@ -66,9 +69,34 @@ describe("toCreateRequest", () => {
       theme: "抗争",
       selling_points: ["逆袭", "系统流"],
       structure: "三幕",
+      tone: null,
+      ending_type: null,
+      narrative_pov: null,
     });
   });
 
+  // ④ 立项新增基调/结局/视角：camelCase 表单 → snake_case 请求，空值落 null。
+  it("maps tone, endingType, narrativePov to snake_case fields", () => {
+    const form: WizardForm = {
+      ...emptyWizardForm,
+      title: "书",
+      tone: "热血",
+      endingType: "HE",
+      narrativePov: "第一人称",
+    };
+    const req = toCreateRequest(form);
+    expect(req.tone).toBe("热血");
+    expect(req.ending_type).toBe("HE");
+    expect(req.narrative_pov).toBe("第一人称");
+  });
+
+  it("nulls empty tone, endingType, narrativePov", () => {
+    const req = toCreateRequest({ ...emptyWizardForm, title: "书" });
+    expect(req.tone).toBeNull();
+    expect(req.ending_type).toBeNull();
+    expect(req.narrative_pov).toBeNull();
+  });
+
   // QA H1 回归：立意（premise）与主角/金手指（protagonist）是两个独立输入，
   // 不能互相覆盖——提交时各占一段合并进 premise。
   it("merges premise and protagonist into premise without overwriting", () => {

apps/web/lib/wizard/wizard.ts

@@ -10,6 +10,10 @@ export interface WizardForm {
   premise: string;
   protagonist: string;
   theme: string;
+  // 立项书级常量（灵感④）：基调 / 结局取向 / 叙事视角。
+  tone: string;
+  endingType: string;
+  narrativePov: string;
 }
 
 export const WIZARD_STEPS = 5;
@@ -32,11 +36,18 @@ export const emptyWizardForm: WizardForm = {
   premise: "",
   protagonist: "",
   theme: "",
+  tone: "",
+  endingType: "",
+  narrativePov: "",
 };
 
 export const GENRES = ["玄幻", "仙侠", "都市", "科幻", "历史", "悬疑"];
 export const STRUCTURES = ["三幕", "故事圈", "雪花"];
 export const SELLING_POINT_PRESETS = ["逆袭", "打脸", "系统流", "双男主", "群像"];
+// 立项书级常量预设（灵感④ / D 枚举）——free text 单选，命不中预设可留空。
+export const TONES = ["热血", "轻松", "沉重", "治愈", "暗黑", "爽文"];
+export const ENDING_TYPES = ["HE", "BE", "开放", "正剧"];
+export const NARRATIVE_POVS = ["第一人称", "第三人称限知", "第三人称全知", "多视角"];
 
 // 每一步可否前进：仅第 1 步（书名）必填，其余可空着继续（草稿式立项）。
 export function canAdvance(step: number, form: WizardForm): boolean {
@@ -75,5 +86,8 @@ export function toCreateRequest(form: WizardForm): ProjectCreateRequest {
     theme: trim(form.theme),
     selling_points: form.sellingPoints,
     structure: trim(form.structure),
+    tone: trim(form.tone),
+    ending_type: trim(form.endingType),
+    narrative_pov: trim(form.narrativePov),
   };
 }