feat: add Seedance segmented video workflow

.project.json

@@ -4,12 +4,12 @@
     {
       "env" : "OPENAI_API_KEY",
       "name" : "OPENAI_API_KEY",
-      "note" : "GPT 文本\/结构化\/图片生成 + OpenAI Sora 视频；没填则图片 mock、视频不可用"
+      "note" : "GPT 文本\/结构化\/图片生成；没填则图片 mock"
     },
     {
       "env" : "SEEDANCE_API_KEY",
       "name" : "SEEDANCE_API_KEY",
-      "note" : "Seedance 视频生成；没填则视频接口不可用"
+      "note" : "Seedance 视频生成；当前视频默认 provider，没填则视频接口不可用"
     },
     {
       "env" : "WEB_AUTH_USERNAME\/WEB_AUTH_PASSWORD\/WEB_AUTH_SESSION_SECRET",
@@ -37,7 +37,7 @@
     "username" : "kangwan"
   },
   "stack" : [
-    "Next.js + GPT + OpenAI Sora",
+    "Next.js + GPT + Seedance 视频",
     "Docker Compose local\/prod parity",
     "Coolify Traefik"
   ],