Initial commit: Pixel AI comic/video creation platform

- FastAPI backend with SQLModel, Alembic migrations, AgentScope agents
- Next.js 15 frontend with React 19, Tailwind, Zustand, React Flow
- Multi-provider AI system (DashScope, Kling, MiniMax, Volcengine, OpenAI, etc.)
- All HTTP clients migrated from sync requests to async httpx
- Admin-managed API keys via environment variables
- SSRF vulnerability fixed in ensure_url()

backend/alembic/versions/add_cinematic_fields.py

@@ -0,0 +1,41 @@
+"""add cinematic and professional fields to assets and storyboards
+
+Revision ID: add_cinematic_fields
+Revises: add_prompt_fields
+Create Date: 2026-01-20
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'add_cinematic_fields'
+down_revision = 'add_canvas_metadata'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Assets表已经使用extra_data存储这些字段，但为了查询效率，我们可以选择不添加直接列
+    # 因为Asset的emotion, environment_type, weather等字段已经通过extra_data JSON存储
+    # 如果未来需要索引查询，可以添加：
+    # op.add_column('assets', sa.Column('emotion', sa.String(), nullable=True))
+    # op.add_column('assets', sa.Column('environment_type', sa.String(), nullable=True))
+    # op.add_column('assets', sa.Column('weather', sa.String(), nullable=True))
+    
+    # Add cinematic control fields to storyboards table
+    op.add_column('storyboards', sa.Column('camera_angle', sa.String(), nullable=True))
+    op.add_column('storyboards', sa.Column('lens', sa.String(), nullable=True))
+    op.add_column('storyboards', sa.Column('focus', sa.String(), nullable=True))
+    op.add_column('storyboards', sa.Column('lighting', sa.String(), nullable=True))
+    op.add_column('storyboards', sa.Column('color_style', sa.String(), nullable=True))
+
+
+def downgrade() -> None:
+    # Remove cinematic fields from storyboards
+    op.drop_column('storyboards', 'color_style')
+    op.drop_column('storyboards', 'lighting')
+    op.drop_column('storyboards', 'focus')
+    op.drop_column('storyboards', 'lens')
+    op.drop_column('storyboards', 'camera_angle')