Type Alias AvailabilityLevel

AvailabilityLevel: "Full" | "Degraded" | "Sparse" | "Unavailable"

Overall feed availability level.

Level	Condition	Description
Full	≥10/13 ok	Normal operation
Degraded	5–9/13 ok	Reduced data quality expected
Sparse	1–4/13 ok	Minimal data, analysis-only mode likely
Unavailable	0/13 ok	No EP feed data available