Fuel sweep actions

Public taker flow on the fuel ladders (hourly fuel_trades fetch), aggregated per burst × bucket × taker side. Phases: open-harvest = both-tails certainty buying before 09:45 ET; harvest = later near-certain takes (frontier creep / backfill / close cleanup, all prices ≥93c); attack = conviction flow paying real premium; minor = bursts under 200 contracts; own = our manual taker fills (excluded from burst classification). Σ yes/no $ = cumulative taker dollars spent on that bucket's YES / NO side as of the action (own flow excluded). Trading day rolls at 04:00 ET so diesel's past-midnight tail stays with its day. The 15-min fetch skips buckets quiet for an hour outside its :07 run; refresh fetches the shown day from Kalshi now: the selected bucket only, or every bucket of the selected market (not for ALL; one refresh at a time).