Per-campaign performance with server-side sort, per-campaign breathingState classification, and the page-level rollup model.

• CACHED: this route wraps its live fetch in a short read-through response cache — 60s when the range includes today, 300s when the range is fully in the past.
• Entries always expire and re-fetch live; a fetch failure never falls back to a cached value.
• Polling faster than once a minute returns the identical body.
• Money fields are integer piasters (EGP x 100).