Dedup Garmin data storage, configurable chart colors, taxonomy fixes, sync/progression fixes

- Remove duplicated Garmin fields from storage; decode display-only fields
  (activity name/type, lap duration/HR, structured workout raw JSON) from
  RawJSON at API-response time instead of storing redundant columns
- Add a fully configurable chart color system (pace/HR main-line colors, 4
  effort-kind colors, tint/darken/brighten intensity knobs) under Profile >
  Chart colors
- Rename training types and fix their display order (Easy, Long, 60'/30'
  Threshold, Tempo, Intervals, MAS Test, Race) everywhere they're listed
- Add an Efficiency Factor progression metric; fix Progression chart axes to
  use tight non-zero-based domains, m:ss/km pace formatting, and rounded
  ticks instead of raw floating-point labels
- Expose the raw get_workout_by_id() payload in the raw-data viewer
  alongside activity/lap/detail JSON; enlarge the modal and shrink array
  indentation for readability
- Fix "last sync" reporting a meaningless activity count: record one
  combined sync run per manual "Sync now" and count genuinely new
  activities instead of re-listing whatever Garmin returned for the queried
  window
- Let a Review Queue activity be manually cleared back to Unclassified, and
  make "Reset all" available even while disconnected from Garmin

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/internal/sync/mapping.go

@@ -22,31 +22,18 @@ func isRunningActivityType(typeKey string) bool {
 func toActivityRow(a garmin.Activity) store.Activity {
 	return store.Activity{
 		GarminActivityID:        a.ActivityID,
-		ActivityName:            a.ActivityName,
-		ActivityType:            a.ActivityType.TypeKey,
 		EventTypeKey:            a.EventType.TypeKey,
 		WorkoutID:               a.WorkoutID,
 		StartTimeUTC:            a.StartTimeGMT,
-		BeginTimestampMs:        a.BeginTimestamp,
 		DurationSeconds:         a.Duration,
 		DistanceMeters:          a.Distance,
 		AvgHR:                   nonZero(a.AverageHR),
 		MaxHR:                   nonZero(a.MaxHR),
 		AvgSpeedMps:             nonZero(a.AverageSpeed),
-		MaxSpeedMps:             nonZero(a.MaxSpeed),
 		ElevationGainM:          a.ElevationGain,
-		ElevationLossM:          a.ElevationLoss,
-		Calories:                nonZero(a.Calories),
-		LapCount:                a.LapCount,
 		AerobicTrainingEffect:   nonZero(a.AerobicTrainingEffect),
 		AnaerobicTrainingEffect: nonZero(a.AnaerobicTrainingEffect),
-		TrainingEffectLabel:     a.TrainingEffectLabel,
 		VO2MaxValue:             a.VO2MaxValue,
-		HrTimeInZone1:           nonZero(a.HrTimeInZone1),
-		HrTimeInZone2:           nonZero(a.HrTimeInZone2),
-		HrTimeInZone3:           nonZero(a.HrTimeInZone3),
-		HrTimeInZone4:           nonZero(a.HrTimeInZone4),
-		HrTimeInZone5:           nonZero(a.HrTimeInZone5),
 		RawJSON:                 string(a.Raw),
 	}
 }
@@ -90,18 +77,9 @@ func toLapRows(laps []garmin.Lap, samples []garmin.Sample, targets []*garmin.Wor
 			hrLow, hrHigh = targetHRRange(*targets[i], profile)
 		}
 
-		raw, _ := json.Marshal(l)
 		rows = append(rows, store.Lap{
 			LapIndex:            l.LapIndex,
-			StartTimeUTC:        l.StartTimeGMT,
-			DurationSeconds:     l.Duration,
-			DistanceMeters:      l.Distance,
-			AvgHR:               nonZero(l.AverageHR),
-			MaxHR:               nonZero(l.MaxHR),
 			AvgSpeedMps:         nonZero(l.AverageSpeed),
-			MaxSpeedMps:         nonZero(l.MaxSpeed),
-			ElevationGainM:      nonZero(l.ElevationGain),
-			ElevationLossM:      nonZero(l.ElevationLoss),
 			IntensityType:       l.IntensityType,
 			HRDriftBpmPerMin:    driftPtr,
 			HRRecoveryBpmPerMin: recoveryPtr,
@@ -109,7 +87,7 @@ func toLapRows(laps []garmin.Lap, samples []garmin.Sample, targets []*garmin.Wor
 			TargetPaceHighMps:   paceHigh,
 			TargetHRLowBpm:      hrLow,
 			TargetHRHighBpm:     hrHigh,
-			RawJSON:             string(raw),
+			RawJSON:             string(l.Raw),
 		})
 		elapsedStart = elapsedEnd
 	}