Initial 智念AIGC platform

.env.example

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+# Copy this file to .env.local when you need real generation.
+# Do not commit filled secret values.
+
+# Local server
+PORT=3000
+HOSTNAME=127.0.0.1
+NEXT_PUBLIC_APP_URL=http://127.0.0.1:3000
+
+# Supabase SaaS data layer. If empty, the app uses .runtime/data/web-app-state.json.
+NEXT_PUBLIC_SUPABASE_URL=
+NEXT_PUBLIC_SUPABASE_ANON_KEY=
+SUPABASE_SERVICE_ROLE_KEY=
+
+# Image creation engines by capability: jimeng or evolink.
+IMAGE_GENERATE_ENGINE=jimeng
+IMAGE_INPAINT_ENGINE=jimeng
+
+# Volcengine Visual API for Jimeng image capabilities.
+VOLCENGINE_ACCESS_KEY_ID=
+VOLCENGINE_SECRET_ACCESS_KEY=
+VOLCENGINE_REGION=cn-north-1
+VOLCENGINE_SERVICE=cv
+VOLCENGINE_VISUAL_ENDPOINT=https://visual.volcengineapi.com
+JIMENG_IMAGE_GENERATE_46_REQ_KEY=jimeng_seedream46_cvtob
+JIMENG_IMAGE_INPAINT_REQ_KEY=jimeng_image2image_dream_inpaint
+JIMENG_IMAGE_UPSCALE_REQ_KEY=jimeng_i2i_seed3_tilesr_cvtob
+# auto mocks image jobs when Volcengine credentials are missing.
+JIMENG_VISUAL_MOCK=auto
+
+# EvoLink GPT Image 2 relay for image generation and inpainting.
+EVOLINK_API_KEY=
+EVOLINK_BASE_URL=https://api.evolink.ai
+EVOLINK_IMAGE_MODEL=gpt-image-2
+EVOLINK_IMAGE_QUALITY=medium
+EVOLINK_IMAGE_RESOLUTION=2K
+# auto mocks EvoLink image jobs when EVOLINK_API_KEY is missing.
+EVOLINK_MOCK=auto
+
+# Seedance / Volcengine Ark
+SEEDANCE_API_KEY=
+SEEDANCE_BASE_URL=https://ark.cn-beijing.volces.com/api/v3
+SEEDANCE_MODEL=doubao-seedance-2-0-260128
+SEEDANCE_RATIO=9:16
+# Seedance 2.0 duration supports integer seconds from 4 to 15, or -1 for model auto.
+SEEDANCE_DURATION=5
+SEEDANCE_RESOLUTION=720p
+# auto mocks video jobs when Seedance credentials are missing.
+SEEDANCE_MOCK=auto
+
+# Aliyun OSS for uploaded/reference assets that Seedance can read.
+ALI_OSS_ENDPOINT=
+ALI_OSS_BUCKET=
+ALI_OSS_ACCESS_KEY_ID=
+ALI_OSS_ACCESS_KEY_SECRET=
+ALI_OSS_PREFIX=nianxxplay
+ALI_OSS_PUBLIC_BASE_URL=