0e17f71482ca6cc428f0153d7fb33e71953acbfa
Round 3 showed unconditional yield-after-two-failures pushes the third attempt onto known-bad sources in heterogeneous pools (83% vs 10% expected success). OutcomeAwareSelector now exposes health(); a failed source only yields when some untried candidate scores at least half its health. Health-blind selectors keep the unconditional rule.
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