Add severe weather and thunderstorm risk assessment with CAPE, wind gusts, and hazard warnings

Create comprehensive detailed weather narratives

Add HTTP 429 rate limiting retry logic with 10-second delays

Improve narrative forecast: conversational style and smart grouping

Add weather.gov-style narrative forecast generation

Fix forecast intervals to match ECMWF operational availability

Add hourly forecast support for first 24 hours

Fix ECMWF parameter availability issues and enhance data access

Add ECMWF weather forecast application