Add Reddit monitoring bot — backend, frontend, and Docker config

Python/FastAPI backend with PostgreSQL for collecting Reddit data via
public .json endpoints. React/Vite dashboard for analytics. Docker Compose
setup with API and worker services connecting to shared PostgreSQL.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

requirements.txt

@@ -0,0 +1,12 @@
+fastapi>=0.115.0
+uvicorn[standard]>=0.30.0
+sqlalchemy[asyncio]>=2.0.30
+asyncpg>=0.29.0
+psycopg2-binary>=2.9.9
+alembic>=1.13.0
+pydantic>=2.7.0
+pydantic-settings>=2.3.0
+httpx>=0.27.0
+apscheduler>=3.10.4
+jinja2>=3.1.4
+python-multipart>=0.0.9