初始仓库迁移

.env.example

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+# Server-side OpenAI-compatible LLM endpoint base URL.
+LLM_BASE_URL="https://ark.cn-beijing.volces.com/api/v3"
+
+# Server-side API key used by the local Vite proxy.
+# Recommended: set `LLM_API_KEY` or `ARK_API_KEY`.
+# Legacy compatibility: `VITE_LLM_API_KEY` is still supported by the proxy,
+# but it should not be relied on by browser code.
+LLM_API_KEY="YOUR_API_KEY"
+
+# Optional frontend override for the local proxy path.
+VITE_LLM_PROXY_BASE_URL="/api/llm"
+
+# Optional frontend override for the local custom-world scene image proxy path.
+VITE_SCENE_IMAGE_PROXY_BASE_URL="/api/custom-world/scene-image"
+
+# Model name for chat completions.
+VITE_LLM_MODEL="doubao-1-5-pro-32k-character-250715"
+
+# Server-side DashScope endpoint and API key used by the local scene-image proxy.
+DASHSCOPE_BASE_URL="https://dashscope.aliyuncs.com/api/v1"
+DASHSCOPE_API_KEY=""
+
+# Optional model name for custom-world scene image generation.
+DASHSCOPE_IMAGE_MODEL="wan2.2-t2i-flash"
+
+# Optional: server-side polling timeout for custom-world scene image generation, in milliseconds.
+DASHSCOPE_IMAGE_REQUEST_TIMEOUT_MS="150000"
+
+# Optional: generic frontend timeout for regular LLM requests, in milliseconds.
+VITE_LLM_REQUEST_TIMEOUT_MS="15000"
+
+# Optional: longer timeout for custom world generation, in milliseconds.
+VITE_LLM_CUSTOM_WORLD_TIMEOUT_MS="45000"
+
+# Optional: timeout for custom-world scene image generation, in milliseconds.
+VITE_SCENE_IMAGE_REQUEST_TIMEOUT_MS="150000"
+
+# Optional: print full LLM prompts / outputs in the browser console.
+# Keep this off by default for cleaner logs.
+VITE_LLM_DEBUG_LOG="false"
+
+# Optional: official VikingDB credentials for regenerating build-tag similarities
+# with the Python embedding script. The script auto-loads `.env.local` and uses
+# the fixed `bge-large-zh` embedding model.
+VOLCENGINE_ACCESS_KEY_ID=""
+VOLCENGINE_SECRET_ACCESS_KEY=""
+VIKINGDB_HOST=""
+VIKINGDB_REGION=""
+
+# APP_URL: The URL where this applet is hosted.
+# AI Studio automatically injects this at runtime with the Cloud Run service URL.
+# Used for self-referential links, OAuth callbacks, and API endpoints.
+APP_URL="MY_APP_URL"