partial subscriptions

not really partial. they just happen per peripheral now

telemetry/fuel_calculator.go

@@ -5,6 +5,8 @@ import (
 	"log/slog"
 	"strconv"
 	"sync"
+
+	"esdi/constants"
 )
 
 // NOTE: for managing fuel consumption and predictions we need to filter out
@@ -264,3 +266,7 @@ func (fc *FuelCalculator) resetHistory() {
 func (fc *FuelCalculator) EnsureSubscribed() []FieldID {
 	return []FieldID{FuelLevel, LapNumber}
 }
+
+func (fc *FuelCalculator) Name() string {
+	return constants.FuelCalculatorName
+}