Deploy: 2026 sensor migration + redesign + bucket B endpoints

Fix IMS weather staleness, add data freshness endpoint

SSE live updates, route cleanup, advisor briefing

Cache TB data: src/data/data_providers.py

Update src/data/data_providers.py: circuit breaker, weather fix, TB health fix

Fix NaN JSON serialization in summarise_dataframe

Wrap sensor history imports in try/except, add logging to all failure points

Add logging to silent ML energy prediction fallback

Fix Redis singleton: prevent retry storm on init failure

Deploy SolarWine API (FastAPI + Docker, port 7860)