Initial commit: Børnetime app scaffold

FastAPI + Celery + Svelte app for English→Danish video translation
with voice cloning. Includes diarization, STT, translation, TTS,
and audio mixing pipeline.

Dockerfile.api

@@ -0,0 +1,20 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN pip install --no-cache-dir \
+    fastapi uvicorn[standard] \
+    sqlalchemy[asyncio] aiosqlite \
+    pydantic pydantic-settings \
+    python-multipart aiofiles \
+    httptools
+
+COPY backend/ .
+
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]