InputStreamHealth.deliveryRate property

Smoothed media time delivered per wallclock second (EWMA across windows). ~1.0 = realtime; > 1 sustained = the source is running above realtime (a "forgot -re" firehose reads tens×, a genuinely-fast source ~1.1+); < 1 = arriving slower than realtime. The startup producer burst is smoothed out. Only act on this once is true.

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