Implement video transcoding, add dashboard UI, and cleanup repository

Dockerfile

@@ -1,6 +1,8 @@
 FROM python:3.11-slim
 WORKDIR /app
-COPY ta_symlink.py .
+COPY . .
+RUN apt-get update && apt-get install -y ffmpeg && rm -rf /var/lib/apt/lists/*
 RUN pip install --no-cache-dir requests flask
+RUN mkdir -p /app/data
 EXPOSE 5000
 CMD ["python", "ta_symlink.py"]