Initial commit: Add T YouTube text-based reader web app

- FastAPI backend running on port 8000
- Svelte 5 runes frontend dashboard supporting Read/Skip state toggles
- YouTube subscription feed scraper using yt-dlp & Netscape cookies.txt
- Transcript downloader and Claude 3.5 Haiku summarizer via bytecatcode proxy
- Multi-stage Dockerfile and docker-compose.yml configuration

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,40 @@
+# Stage 1: Build Svelte frontend
+FROM node:20-alpine AS frontend-builder
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+RUN npm install
+COPY frontend/ ./
+RUN npm run build
+
+# Stage 2: Python runtime backend
+FROM python:3.10-slim AS backend-runner
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+# Download latest official yt-dlp to ensure subscription scrapers do not break
+RUN curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/local/bin/yt-dlp && \
+    chmod a+rx /usr/local/bin/yt-dlp
+
+# Install python packages
+COPY backend/requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy built static frontend
+COPY --from=frontend-builder /app/frontend/dist ./frontend/dist
+
+# Copy Python backend
+COPY backend/ ./backend
+
+# Directory setups for mounts
+ENV DB_DIR=/app/data
+ENV COOKIES_PATH=/app/config/cookies.txt
+ENV PYTHONUNBUFFERED=1
+
+EXPOSE 8000
+
+CMD ["python", "backend/main.py"]