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/Dockerfile

@@ -0,0 +1,40 @@
+FROM python:3.12-slim
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    git \
+    libgl1 \
+    libglib2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install uv
+RUN pip install uv
+
+# Set working directory
+WORKDIR /app
+
+# Copy dependency files
+COPY pyproject.toml uv.lock ./
+
+# Create virtual environment and install dependencies
+# Using --frozen to ensure strict adherence to uv.lock
+RUN uv sync --frozen --no-install-project
+
+# Add virtual environment to PATH
+ENV PATH="/app/.venv/bin:$PATH"
+
+# Copy source code
+COPY src ./src
+
+# Install the project itself (if needed)
+RUN uv sync --frozen
+
+# Create directories for data/uploads if they don't exist
+RUN mkdir -p data/uploads
+
+# Expose port
+EXPOSE 8000
+
+# Start command
+CMD ["uv", "run", "uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000"]