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ARCHITECTURE 7.8 gains the pool resource semantics, the two-sentence failure verdict and the two config keys; the ownership rule lands in a new 4.5 because it is a cross-subsystem discipline, not a telemetry convention. CHANGELOG leads with the three items downstream must read first: the 3.12 floor, the connection count going from 10 per client to on demand, and aclose no longer closing injected components.