Integrate WeatherAPI forecast+alerts across app

Refactor climate advisory agent to support video input and improve model loading. Update requirements to use the latest transformers from GitHub and add new utility dependencies. Clean up code by removing unnecessary comments and enhancing descriptions for clarity.

Update references from TerraSyncra to Aglimate in main.py, climate_agent.py, and crew_pipeline.py for consistent branding across the backend.

Initial Aglimate backend