From a3d0c97d23de7e7fc6ac32e879eae9e9bc229a37 Mon Sep 17 00:00:00 2001
From: kang <wankang2050@gmail.com>
Date: Wed, 20 May 2026 22:48:44 +0800
Subject: [PATCH] auto-save 2026-05-20 22:48 (~2)

---
 .memory/worklog.json     |  7 +++++++
 src/lib/packGenerator.ts | 15 +++++++++------
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/.memory/worklog.json b/.memory/worklog.json
index 4a67e18..a1d9658 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -1839,6 +1839,13 @@
       "message": "fix: make video prompts material adaptive",
       "hash": "7106f3a",
       "files_changed": 1
+    },
+    {
+      "ts": "2026-05-20T22:43:19+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-20 22:43 (~2)",
+      "hash": "33f87eb",
+      "files_changed": 2
     }
   ]
 }
diff --git a/src/lib/packGenerator.ts b/src/lib/packGenerator.ts
index 6659239..cdede29 100644
--- a/src/lib/packGenerator.ts
+++ b/src/lib/packGenerator.ts
@@ -1,6 +1,7 @@
 import { randomBytes } from 'node:crypto';
 import type {
   AssetPack,
+  AssetTemplate,
   CharacterSpec,
   ExportManifest,
   GenImage,
@@ -289,11 +290,13 @@ export async function generateAssetPack(opts: {
   });
   const characterSpec = cleaned.characterSpec;
   const version = 'v01';
-  const packId = `pack_${opts.kind}_${Date.now().toString(36)}_${randomBytes(3).toString('hex')}`;
-  const createdAt = Date.now();
+  const existingPack = opts.session.packs?.find(pack => pack.kind === opts.kind && pack.sourceImageId === opts.sourceImage.id && pack.status !== 'complete');
+  const packId = existingPack?.id ?? `pack_${opts.kind}_${Date.now().toString(36)}_${randomBytes(3).toString('hex')}`;
+  const createdAt = existingPack?.createdAt ?? Date.now();
   const provider = detectProvider();
 
-  const assets: ToyAsset[] = [];
+  const templateIds = new Set(templates.map(template => template.id));
+  const assets: ToyAsset[] = (existingPack?.assets ?? []).filter(asset => templateIds.has(asset.templateId));
   const pack: AssetPack = {
     id: packId,
     kind: opts.kind,
@@ -302,14 +305,14 @@ export async function generateAssetPack(opts: {
     sourceImageUrl: opts.sourceImage.url,
     characterSpec,
     assets,
-    manifestId: `manifest_${packId}`,
+    manifestId: existingPack?.manifestId ?? `manifest_${packId}`,
     createdAt,
     version,
     status: 'draft',
   };
 
-  const remainingTemplates = [...templates];
-  const generatedTemplateIds = new Set<string>();
+  const generatedTemplateIds = new Set(assets.map(asset => asset.templateId));
+  const remainingTemplates = templates.filter(template => !generatedTemplateIds.has(template.id));
   async function createAsset(template: AssetTemplate): Promise<ToyAsset> {
     const assetId = `${opts.kind}_${template.filenamePart}_${randomBytes(3).toString('hex')}`;
     const anchorAsset = template.anchorTemplateId