Forecasts now use your real array orientation and tilt

If your arrays do not face south at 15°, your expected production and five-day forecast were off. Forecasts now follow each string's own orientation and tilt, grouped by compass direction. Your plants receive this with their next agent update.

• Orientation and tilt come from each string's configured or detected values.
• East-west and split arrays change most; a south-facing plant sees no difference.