refactor: 收口创作直达恢复目标

.hermes/shared-memory/decision-log.md

@@ -1340,6 +1340,7 @@
 - 背景：平台壳内散落各玩法创作恢复 URL 的 `sessionId` / `profileId` / `draftId` / `workId` 组装、空值归一化、拼图 runtime query key 与拼图稳定身份互推，导致刷新恢复规则缺少稳定测试面。
 - 决策：新增 `src/components/platform-entry/platformCreationUrlStateModel.ts` 作为 Creation URL State Module，Interface 收口各玩法 `build*CreationUrlState`、拼图 `buildPuzzle*RuntimeUrlState`、URL state 非空判断和 runtime state key；新增 `src/components/platform-entry/platformPuzzleIdentityModel.ts` 作为拼图稳定身份 Module，`platformDraftGenerationShelfModel.ts` 仅 re-export 旧入口以保持兼容。`PlatformEntryFlowShellImpl.tsx` 只保留路由、URL 写入和网络副作用 Adapter。
 - 追加决策：初始创作 URL 恢复的已处理、非创作路径、无私有 query、平台配置加载中、受保护数据暂不可读与可恢复判定也收口到 `resolveInitialCreationUrlRestoreDecision`；壳层只按 `skip`、`mark-handled`、`wait`、`restore` 执行 ref 标记或进入原恢复副作用。
+- 追加决策：创作直达恢复目标解析收口到 `resolveCreationUrlRestoreTarget(pathname, state)`；Module 统一识别 big-fish、match3d、square-hole、puzzle、visual-novel、bark-battle、baby-object-match、jump-hop、wooden-fish 的 path、私有 query 归一化、生成路径标记和 big-fish workId 到 sessionId 兜底。壳层仍执行作品列表读取、草稿恢复、错误处理、stage 切换和 URL 写回；`/creation/rpg` 继续保持无具体恢复目标，后续要接入需先补规则与测试。
 - 影响范围：创作流程刷新恢复、拼图草稿 / 发布 runtime 深链、作品架打开试玩、跳一跳 / 敲木鱼 work-backed 恢复、Bark Battle / 宝贝识物本地草稿恢复。
 - 验证方式：`npm run test -- src/components/platform-entry/platformCreationUrlStateModel.test.ts src/components/platform-entry/platformPuzzleIdentityModel.test.ts`、`npm run test -- src/services/creationUrlState.test.ts`、`npm run test -- src/components/platform-entry/platformDraftGenerationShelfModel.test.ts`、针对新 Module 执行 ESLint、`npm run typecheck`、`npm run check:encoding`。
 - 关联文档：`docs/technical/【前端架构】CreationUrlStateModel收口计划-2026-06-03.md`。

docs/README.md

@@ -49,7 +49,7 @@ AI 文字游戏模板接入以 [AI_NATIVE_TEXT_GAME_TEMPLATE_MOKU_REFERENCE_PRD_
 
 平台入口创作生成通知、pending 作品架占位、失败覆盖、拼图稳定 ID 和草稿 Tab 未读点收口到 `src/components/platform-entry/platformDraftGenerationShelfModel.ts`，规则见 [【前端架构】DraftGenerationShelfModel收口计划-2026-06-03.md](./technical/%E3%80%90%E5%89%8D%E7%AB%AF%E6%9E%B6%E6%9E%84%E3%80%91DraftGenerationShelfModel%E6%94%B6%E5%8F%A3%E8%AE%A1%E5%88%92-2026-06-03.md)。
 
-平台入口创作恢复 URL 私有 query、初始恢复判定、拼图 runtime query 与拼图稳定身份互推收口到 `src/components/platform-entry/platformCreationUrlStateModel.ts` 和 `src/components/platform-entry/platformPuzzleIdentityModel.ts`，规则见 [【前端架构】CreationUrlStateModel收口计划-2026-06-03.md](./technical/【前端架构】CreationUrlStateModel收口计划-2026-06-03.md)。
+平台入口创作恢复 URL 私有 query、初始恢复判定、创作直达恢复目标解析、拼图 runtime query 与拼图稳定身份互推收口到 `src/components/platform-entry/platformCreationUrlStateModel.ts` 和 `src/components/platform-entry/platformPuzzleIdentityModel.ts`，规则见 [【前端架构】CreationUrlStateModel收口计划-2026-06-03.md](./technical/【前端架构】CreationUrlStateModel收口计划-2026-06-03.md)。
 
 平台入口错误 / 完成弹窗的文案归一、来源格式、候选择一、dismiss key 与任务完成文案收口到 `src/components/platform-entry/platformDialogStateModel.ts`，规则见 [【前端架构】PlatformDialogStateModel收口计划-2026-06-03.md](./technical/【前端架构】PlatformDialogStateModel收口计划-2026-06-03.md)。
 

docs/technical/【前端架构】CreationUrlStateModel收口计划-2026-06-03.md

@@ -7,7 +7,7 @@
 ## 决策
 
 - 新增 `src/components/platform-entry/platformCreationUrlStateModel.ts` 作为 Creation URL State Module。
-- 该 Module 的 Interface 收口为各玩法 `build*CreationUrlState`、拼图 `buildPuzzle*RuntimeUrlState`、`normalizeCreationUrlValue`、`hasCreationUrlStateValue`、`hasPuzzleRuntimeUrlStateValue`、`buildPuzzleRuntimeUrlStateKey` 与初始创作 URL 恢复判定 `resolveInitialCreationUrlRestoreDecision`。
+- 该 Module 的 Interface 收口为各玩法 `build*CreationUrlState`、拼图 `buildPuzzle*RuntimeUrlState`、`normalizeCreationUrlValue`、`hasCreationUrlStateValue`、`hasPuzzleRuntimeUrlStateValue`、`buildPuzzleRuntimeUrlStateKey`、初始创作 URL 恢复判定 `resolveInitialCreationUrlRestoreDecision`，以及创作直达恢复目标解析 `resolveCreationUrlRestoreTarget`。
 - 新增 `src/components/platform-entry/platformPuzzleIdentityModel.ts` 作为拼图稳定身份 Module，统一 `puzzle-session-*`、`puzzle-profile-*`、`puzzle-work-*` 的互推规则。
 - `PlatformEntryFlowShellImpl.tsx` 保留 React state、路由、登录门禁、网络请求和 URL 写入副作用 Adapter；不再在壳层内定义各玩法 URL 状态构造函数，也不直接内联初始恢复的已处理 / 等待 / 可恢复判定。
 
@@ -19,11 +19,13 @@
 - 拼图 runtime query 独立使用 `mode`、`runtimeSessionId`、`runtimeProfileId`、`runtimeLevelId`、`publicWorkCode`，不与创作恢复 query 混写。
 - 拼图 draft runtime 若没有 `sourceSessionId`，只允许从 `puzzle-profile-*` 反推出 `puzzle-session-*`。
 - 初始创作 URL 恢复只在未处理、当前路径属于创作恢复路径、私有 query 有值、平台配置加载完成且受保护数据可读时执行；非创作路径或无私有 query 时标记已处理，加载中或暂不可读时等待。
+- 创作直达恢复目标由 `resolveCreationUrlRestoreTarget(pathname, state)` 统一识别；它只返回玩法 kind、归一化后的四个私有 query、生成路径标记和大鱼吃小鱼 session 兜底，不执行网络请求、草稿打开、stage 切换或 URL 写回。
+- `/creation/rpg` 当前仍不归入具体恢复目标；若后续要恢复 RPG 直达，需要先补明确恢复规则和测试，不得让壳层重新内联路径判定。
 
 ## Depth / Leverage / Locality
 
 - **Depth**：调用方只传玩法快照或作品摘要，即可得到规范化 URL state；各玩法字段优先级藏在 Module Implementation 内。
-- **Leverage**：新增或调整玩法恢复规则、恢复等待条件时，优先补 Module Interface 测试，再接壳层 Adapter。
+- **Leverage**：新增或调整玩法恢复规则、恢复目标或恢复等待条件时，优先补 Module Interface 测试，再接壳层 Adapter。
 - **Locality**：恢复 query、拼图 runtime query 和拼图稳定身份规则集中在两个小 Module，避免散落在页面壳、作品架和 runtime 打开逻辑中。
 
 ## 验收

docs/【玩法创作】平台入口与玩法链路-2026-05-15.md

@@ -8,7 +8,7 @@
 
 当前点击底部加号进入的创作入口页承载后台公告位、创作入口页签和两列模板卡；页签中只有真实后端作品架摘要存在时才展示“最近创作”，其余为玩法模板分类。点击模板卡后直接进入对应玩法已有的入口创作表单 stage，不再经过空白占位页，也不把旧表单嵌进创作入口页。移动端创作入口页顶栏在 `陶泥儿` 品牌同一行显示真实账户泥点数，数据来自 `profileDashboard.walletBalance`，不得再把公告内容或活动奖池当作账号余额展示。创作入口页公告位数据优先读取 `GET /api/creation-entry/config` 的 `eventBanners` 数组，多条配置时前端自动轮播，旧 `eventBanner` 仅作为单条兼容兜底。后台公告配置面向表单：每条公告包含标题和 HTML 内容，后台保存时序列化为后端 `eventBannersJson` 传输字段，由前端空权限沙箱 iframe 展示；旧结构化 banner 字段仅保留回显兼容，不再作为后台公告配置主格式；不得执行 JSX 或把后台代码直接注入 DOM。玩法列表不再套外部边框卡片，移动端需要压缩横向边距和两列间距；玩法卡统一按“上图、左上状态标签（仅非开放态显示）、封面右下 `10-20泥点数`、下方白底标题/描述”结构展示，卡片高度保持紧凑但标题、描述和预估消耗点数都必须可见。创作入口页根容器不再使用 `platform-page-stage` 这类全局内容卡片壳，但继续保留 `platform-remap-surface` 作为主题和输入框样式命中钩子。创作入口页字号需要对齐平台普通 UI 档位：顶栏泥点组件、公告正文、分类 Tab 和玩法卡标题 / 副标题 / 消耗说明优先使用 `11px` 到 `14px`，不使用 `text-lg`、`text-xl` 或更大的展示级字号。草稿 Tab 继续承接作品架；底部加号入口页的“最近创作”只用 7 天内的真实后端作品架摘要判断是否展示，并从摘要里推导最近使用过的模板 ID，页面必须展示“仅显示最近7天内使用过的模板”提示，列表内容必须复用其它页签里的模板卡样式、文案和点击行为，不展示具体作品名称、摘要或生成状态，也不新增独立最近创作卡组件。RPG、RPG 之外的各玩法入口分别落到既有的 `agent-workspace`、`big-fish-agent-workspace`、`match3d-agent-workspace`、`square-hole-agent-workspace`、`jump-hop-workspace`、`wooden-fish-workspace`、`puzzle-agent-workspace`、`bark-battle-workspace`、`visual-novel-agent-workspace`、`baby-object-match-workspace`，这些入口继续承接各玩法自己的表单、草稿恢复和后续编排，不作为创作入口页内容。
 
-创作恢复参数只保留 `sessionId`、`profileId`、`draftId`、`workId` 这四个私有 query。它们只允许在同一条创作链路的结果页、生成页、工作台之间保留；切到首页、公开作品详情、runtime 或另一条玩法链路时必须清掉。生成页等待时间统一以生成状态里的 `startedAtMs` 为准；创建该状态时优先使用后端 session 下发的时间戳，作品摘要里的 `updatedAt` 仍只用于排序与摘要展示，不作为前端自行推导业务状态的真相。
+创作恢复参数只保留 `sessionId`、`profileId`、`draftId`、`workId` 这四个私有 query。它们只允许在同一条创作链路的结果页、生成页、工作台之间保留；切到首页、公开作品详情、runtime 或另一条玩法链路时必须清掉。平台入口刷新直达时，路径到玩法恢复目标、四个 query 归一化、生成页标记和大鱼吃小鱼 workId 兜底统一由 `platformCreationUrlStateModel.ts` 解析，壳层只执行读取作品、恢复草稿和切换阶段等副作用。生成页等待时间统一以生成状态里的 `startedAtMs` 为准；创建该状态时优先使用后端 session 下发的时间戳，作品摘要里的 `updatedAt` 仍只用于排序与摘要展示，不作为前端自行推导业务状态的真相。
 
 统一创作入口覆盖当前可进入创作链路的已有模板：`rpg`、`big-fish`、`puzzle`、`match3d`、`jump-hop`、`wooden-fish`、`square-hole`、`bark-battle`、`visual-novel`、`baby-object-match` 和 `creative-agent`；`airp` 仍是未开放占位，不作为当前统一创作链路目标。拼图、抓大鹅、跳一跳和敲木鱼在前端继续经过 `UnifiedCreationWorkspace` 和 `UnifiedGenerationPage`：`UnifiedCreationWorkspace` 作为平台壳依赖的统一创作编排层，再内部调用 `src/components/unified-creation/workspaces/` 下的 `PuzzleCreationWorkspace`、`Match3DCreationWorkspace`、`JumpHopCreationWorkspace` 和 `WoodenFishCreationWorkspace`。其它已有模板由平台壳用 `UnifiedCreationPage` 包住既有工作台，复用统一标题栏、返回入口、页面级纵向滚动和隐藏字段契约，同时保留各玩法自己的表单、草稿恢复和后续编排。创作页字段清单由后端在 `GET /api/creation-entry/config` 的 `creationTypes[].unifiedCreationSpec` 下发，前端仅在该扩展位缺失时回退到本地默认 spec；字段类型只保留 `text`、`select`、`image`、`audio`。`UnifiedCreationPage` 不在 UI 中额外展示字段说明 chip，也不在右上角显示内部 `playId`、模板 ID 或工作台阶段名；竖屏移动端必须能从标题、表单一路滑到提交按钮。各玩法工作台负责渲染真实输入控件、上传、历史素材、校验和提交，但返回按钮只保留在统一页头，工作台内部不再重复渲染。暗色创作进度卡片位于 `platform-remap-surface` 内时，必须用组件专属 class 覆盖浅色主题 remap，确保白字、浅色边框和进度条底色不会被全局规则改成深色；不要只依赖通用 `text-white*` 类。敲木鱼的音效和功德词条面板不得放进独立内部滚动容器，移动端应跟随页面自然滚动展开。生成页统一展示阶段、当前步骤、总进度、错误和重试动作。
 

src/components/platform-entry/PlatformEntryFlowShellImpl.tsx

@@ -409,6 +409,7 @@ import {
   buildWoodenFishCreationUrlState,
   hasPuzzleRuntimeUrlStateValue,
   normalizeCreationUrlValue,
+  resolveCreationUrlRestoreTarget,
   resolveInitialCreationUrlRestoreDecision,
 } from './platformCreationUrlStateModel';
 import { resolvePlatformCreationWorkDeleteConfirmationModel } from './platformCreationWorkDeleteFlow';
@@ -12142,21 +12143,17 @@ export function PlatformEntryFlowShellImpl({
     handledInitialCreationUrlStateRef.current = true;
 
     const restoreCreationUrlState = async () => {
-      const path = window.location.pathname;
+      const target = resolveCreationUrlRestoreTarget(
-      const sessionId = normalizeCreationUrlValue(
+        window.location.pathname,
-        initialCreationUrlState.sessionId,
+        initialCreationUrlState,
       );
-      const profileId = normalizeCreationUrlValue(
+      if (!target) {
-        initialCreationUrlState.profileId,
+        return;
-      );
+      }
-      const draftId = normalizeCreationUrlValue(
+      const { sessionId, profileId, draftId, workId } = target;
-        initialCreationUrlState.draftId,
-      );
-      const workId = normalizeCreationUrlValue(initialCreationUrlState.workId);
 
-      if (path.startsWith('/creation/big-fish')) {
+      if (target.kind === 'big-fish') {
-        const targetSessionId =
+        const targetSessionId = target.bigFishSessionId;
-          sessionId ?? workId?.replace(/^big-fish-work-/u, '');
         if (targetSessionId) {
           const matchedWork =
             (bigFishWorks.length > 0
@@ -12176,7 +12173,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/match3d')) {
+      if (target.kind === 'match3d') {
         const matchedWork =
           (match3dWorks.length > 0
             ? match3dWorks
@@ -12199,7 +12196,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/square-hole')) {
+      if (target.kind === 'square-hole') {
         const matchedWork =
           (squareHoleWorks.length > 0
             ? squareHoleWorks
@@ -12220,7 +12217,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/puzzle')) {
+      if (target.kind === 'puzzle') {
         const matchedWork =
           (puzzleWorks.length > 0
             ? puzzleWorks
@@ -12241,7 +12238,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/visual-novel')) {
+      if (target.kind === 'visual-novel') {
         const matchedWork =
           (visualNovelWorks.length > 0
             ? visualNovelWorks
@@ -12257,7 +12254,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/bark-battle')) {
+      if (target.kind === 'bark-battle') {
         const matchedWork =
           (barkBattleWorks.length > 0
             ? barkBattleWorks
@@ -12271,7 +12268,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/baby-object-match')) {
+      if (target.kind === 'baby-object-match') {
         const matchedDraft =
           (babyObjectMatchDrafts.length > 0
             ? babyObjectMatchDrafts
@@ -12288,7 +12285,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/jump-hop')) {
+      if (target.kind === 'jump-hop') {
         let session: JumpHopSessionSnapshotResponse | null = null;
         let work: JumpHopWorkProfileResponse | null = null;
         try {
@@ -12316,7 +12313,7 @@ export function PlatformEntryFlowShellImpl({
           );
           enterCreateTab();
           setSelectionStage(
-            path.includes('/generating')
+            target.isGeneratingPath
               ? 'jump-hop-generating'
               : session?.draft || work
                 ? 'jump-hop-result'
@@ -12330,7 +12327,7 @@ export function PlatformEntryFlowShellImpl({
         return;
       }
 
-      if (path.startsWith('/creation/wooden-fish')) {
+      if (target.kind === 'wooden-fish') {
         if (!sessionId) {
           return;
         }
@@ -12347,7 +12344,7 @@ export function PlatformEntryFlowShellImpl({
           );
           enterCreateTab();
           setSelectionStage(
-            path.includes('/generating')
+            target.isGeneratingPath
               ? 'wooden-fish-generating'
               : session.draft
                 ? 'wooden-fish-result'

src/components/platform-entry/platformCreationUrlStateModel.test.ts

@@ -32,6 +32,7 @@ import {
   hasCreationUrlStateValue,
   hasPuzzleRuntimeUrlStateValue,
   normalizeCreationUrlValue,
+  resolveCreationUrlRestoreTarget,
   resolveInitialCreationUrlRestoreDecision,
 } from './platformCreationUrlStateModel';
 
@@ -94,6 +95,104 @@ describe('platformCreationUrlStateModel', () => {
     });
   });
 
+  test('resolves supported creation url restore targets from paths', () => {
+    const state = {
+      sessionId: ' session-1 ',
+      profileId: ' profile-1 ',
+      draftId: ' draft-1 ',
+      workId: ' work-1 ',
+    };
+    const cases = [
+      ['/creation/big-fish/result', 'big-fish'],
+      ['/creation/match3d/result', 'match3d'],
+      ['/creation/square-hole/result', 'square-hole'],
+      ['/creation/puzzle/result', 'puzzle'],
+      ['/creation/visual-novel/result', 'visual-novel'],
+      ['/creation/bark-battle/result', 'bark-battle'],
+      ['/creation/baby-object-match/result', 'baby-object-match'],
+      ['/creation/jump-hop/result', 'jump-hop'],
+      ['/creation/wooden-fish/result', 'wooden-fish'],
+    ] as const;
+
+    cases.forEach(([pathname, kind]) => {
+      expect(resolveCreationUrlRestoreTarget(pathname, state)).toMatchObject({
+        kind,
+        sessionId: 'session-1',
+        profileId: 'profile-1',
+        draftId: 'draft-1',
+        workId: 'work-1',
+        isGeneratingPath: false,
+      });
+    });
+  });
+
+  test('normalizes creation url restore target values and generating paths', () => {
+    expect(
+      resolveCreationUrlRestoreTarget('/creation/jump-hop/generating', {
+        sessionId: ' ',
+        profileId: ' jump-profile-1 ',
+        draftId: undefined,
+        workId: null,
+      }),
+    ).toEqual({
+      kind: 'jump-hop',
+      sessionId: null,
+      profileId: 'jump-profile-1',
+      draftId: null,
+      workId: null,
+      isGeneratingPath: true,
+    });
+  });
+
+  test('derives big fish restore session from work id when needed', () => {
+    expect(
+      resolveCreationUrlRestoreTarget('/creation/big-fish/result', {
+        workId: 'big-fish-work-river',
+      }),
+    ).toEqual({
+      kind: 'big-fish',
+      sessionId: null,
+      profileId: null,
+      draftId: null,
+      workId: 'big-fish-work-river',
+      isGeneratingPath: false,
+      bigFishSessionId: 'river',
+    });
+
+    expect(
+      resolveCreationUrlRestoreTarget('/creation/big-fish/result', {
+        sessionId: 'big-fish-session-carp',
+        workId: 'big-fish-work-river',
+      }),
+    ).toMatchObject({
+      kind: 'big-fish',
+      bigFishSessionId: 'big-fish-session-carp',
+    });
+  });
+
+  test('keeps unsupported creation paths without a concrete restore target', () => {
+    expect(
+      resolveCreationUrlRestoreTarget('/creation/rpg/result', {
+        sessionId: 'rpg-session-1',
+      }),
+    ).toBeNull();
+    expect(
+      resolveCreationUrlRestoreTarget('/creation/unknown/result', {
+        sessionId: 'unknown-session-1',
+      }),
+    ).toBeNull();
+    expect(
+      resolveCreationUrlRestoreTarget('/creation/big-fishery/result', {
+        sessionId: 'big-fish-session-1',
+      }),
+    ).toBeNull();
+    expect(
+      resolveCreationUrlRestoreTarget('/works/detail', {
+        workId: 'work-1',
+      }),
+    ).toBeNull();
+  });
+
   test('builds creation restore state for core session based plays', () => {
     expect(
       buildBigFishCreationUrlState({

src/components/platform-entry/platformCreationUrlStateModel.ts

@@ -60,6 +60,93 @@ export function buildPuzzleRuntimeUrlStateKey(state: PuzzleRuntimeUrlState) {
   ].join('|');
 }
 
+export type CreationUrlRestoreTargetKind =
+  | 'big-fish'
+  | 'match3d'
+  | 'square-hole'
+  | 'puzzle'
+  | 'visual-novel'
+  | 'bark-battle'
+  | 'baby-object-match'
+  | 'jump-hop'
+  | 'wooden-fish';
+
+type CreationUrlRestoreTargetBase = {
+  kind: CreationUrlRestoreTargetKind;
+  sessionId: string | null;
+  profileId: string | null;
+  draftId: string | null;
+  workId: string | null;
+  isGeneratingPath: boolean;
+};
+
+export type CreationUrlRestoreTarget =
+  | (CreationUrlRestoreTargetBase & {
+      kind: 'big-fish';
+      bigFishSessionId: string | null;
+    })
+  | (CreationUrlRestoreTargetBase & {
+      kind: Exclude<CreationUrlRestoreTargetKind, 'big-fish'>;
+    });
+
+type NonBigFishCreationUrlRestoreTarget = Extract<
+  CreationUrlRestoreTarget,
+  { kind: Exclude<CreationUrlRestoreTargetKind, 'big-fish'> }
+>;
+
+const CREATION_URL_RESTORE_TARGET_ROUTES = [
+  ['/creation/big-fish', 'big-fish'],
+  ['/creation/match3d', 'match3d'],
+  ['/creation/square-hole', 'square-hole'],
+  ['/creation/puzzle', 'puzzle'],
+  ['/creation/visual-novel', 'visual-novel'],
+  ['/creation/bark-battle', 'bark-battle'],
+  ['/creation/baby-object-match', 'baby-object-match'],
+  ['/creation/jump-hop', 'jump-hop'],
+  ['/creation/wooden-fish', 'wooden-fish'],
+] as const satisfies readonly (readonly [
+  string,
+  CreationUrlRestoreTargetKind,
+])[];
+
+export function resolveCreationUrlRestoreTarget(
+  pathname: string | undefined,
+  state: CreationUrlState,
+): CreationUrlRestoreTarget | null {
+  const path = pathname?.trim() ?? '';
+  const route = CREATION_URL_RESTORE_TARGET_ROUTES.find(([prefix]) =>
+    path === prefix || path.startsWith(`${prefix}/`),
+  );
+  if (!route) {
+    return null;
+  }
+
+  const kind = route[1];
+  const sessionId = normalizeCreationUrlValue(state.sessionId);
+  const profileId = normalizeCreationUrlValue(state.profileId);
+  const draftId = normalizeCreationUrlValue(state.draftId);
+  const workId = normalizeCreationUrlValue(state.workId);
+  const base = {
+    kind,
+    sessionId,
+    profileId,
+    draftId,
+    workId,
+    isGeneratingPath: path.includes('/generating'),
+  };
+
+  if (kind === 'big-fish') {
+    return {
+      ...base,
+      kind,
+      bigFishSessionId:
+        sessionId ?? workId?.replace(/^big-fish-work-/u, '') ?? null,
+    };
+  }
+
+  return base as NonBigFishCreationUrlRestoreTarget;
+}
+
 export type InitialCreationUrlRestoreDecision =
   | { type: 'skip' }
   | { type: 'mark-handled' }