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mempool: price fee flow on the 0.1 sat/vB grid - #974
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Admit-rate buckets through 10 sat/vB now match the quote ladder, so a 1.5 sat/vB inflow no longer prices as 1.0 and a 4.9 sat/vB inflow no longer prices as 2.0. The inclusion search reads one suffix sum of those buckets.
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Summary
The 1-block fee quote searches a 0.1 sat/vB ladder, but admit flow was stored in wide buckets (1–2, 2–5, …). With an underfull pool the search could only land on a bucket floor, so a 1.5 sat/vB inflow quoted 1.0 and a 4.9 sat/vB inflow quoted 2.0.
Flow buckets now use that same ladder through 10 sat/vB, then 20, 50, and 100 sat/vB, plus an open top. The inclusion search reads one suffix sum of those buckets instead of rescanning them per candidate.
Test
point_mass_quotes_its_own_tenthputs an overflowing inflow at 1.5 and at 4.9 sat/vB and requires the quote to be that step, not the old coarse floor.