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/store/laps.go

@@ -7,19 +7,18 @@ import (
 
 // Lap is one lap/split of an activity, from get_activity_splits, plus
 // derived HR drift/recovery metrics computed from activity_samples.
+//
+// Deliberately NOT modeled here: StartTimeUTC, DistanceMeters, MaxHR,
+// MaxSpeedMps, ElevationGainM, ElevationLossM (removed in the 2026-07
+// dedup pass -- zero consumers anywhere, pure duplicates of RawJSON), plus
+// DurationSeconds and AvgHR, which DO have a real frontend chart need but no
+// backend one, so the API layer decodes them from RawJSON at response time
+// instead of storing a redundant copy -- see decodeLapDisplayFields.
 type Lap struct {
 	ID                  int64
 	ActivityID          int64
 	LapIndex            int
-	StartTimeUTC        string
-	DurationSeconds     float64
-	DistanceMeters      float64
-	AvgHR               *float64
-	MaxHR               *float64
 	AvgSpeedMps         *float64
-	MaxSpeedMps         *float64
-	ElevationGainM      *float64
-	ElevationLossM      *float64
 	IntensityType       string
 	HRDriftBpmPerMin    *float64
 	HRRecoveryBpmPerMin *float64
@@ -52,13 +51,11 @@ func (db *DB) ReplaceLaps(ctx context.Context, activityID int64, laps []Lap) err
 	for _, l := range laps {
 		_, err := tx.ExecContext(ctx, `
 			INSERT INTO laps (
-				activity_id, lap_index, start_time_utc, duration_seconds, distance_meters,
-				avg_hr, max_hr, avg_speed_mps, max_speed_mps, elevation_gain_m, elevation_loss_m,
+				activity_id, lap_index, avg_speed_mps,
 				intensity_type, hr_drift_bpm_per_min, hr_recovery_bpm_per_min,
 				target_pace_low_mps, target_pace_high_mps, target_hr_low_bpm, target_hr_high_bpm, raw_json
-			) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`,
-			activityID, l.LapIndex, l.StartTimeUTC, l.DurationSeconds, l.DistanceMeters,
-			l.AvgHR, l.MaxHR, l.AvgSpeedMps, l.MaxSpeedMps, l.ElevationGainM, l.ElevationLossM,
+			) VALUES (?,?,?,?,?,?,?,?,?,?,?)`,
+			activityID, l.LapIndex, l.AvgSpeedMps,
 			l.IntensityType, l.HRDriftBpmPerMin, l.HRRecoveryBpmPerMin,
 			l.TargetPaceLowMps, l.TargetPaceHighMps, l.TargetHRLowBpm, l.TargetHRHighBpm, l.RawJSON,
 		)
@@ -72,8 +69,7 @@ func (db *DB) ReplaceLaps(ctx context.Context, activityID int64, laps []Lap) err
 // LapsForActivity returns all laps for an activity, ordered by lap_index.
 func (db *DB) LapsForActivity(ctx context.Context, activityID int64) ([]Lap, error) {
 	rows, err := db.QueryContext(ctx, `
-		SELECT id, activity_id, lap_index, start_time_utc, duration_seconds, distance_meters,
-			avg_hr, max_hr, avg_speed_mps, max_speed_mps, elevation_gain_m, elevation_loss_m,
+		SELECT id, activity_id, lap_index, avg_speed_mps,
 			intensity_type, hr_drift_bpm_per_min, hr_recovery_bpm_per_min,
 			target_pace_low_mps, target_pace_high_mps, target_hr_low_bpm, target_hr_high_bpm, raw_json
 		FROM laps WHERE activity_id = ? ORDER BY lap_index`, activityID)
@@ -86,8 +82,7 @@ func (db *DB) LapsForActivity(ctx context.Context, activityID int64) ([]Lap, err
 	for rows.Next() {
 		var l Lap
 		if err := rows.Scan(
-			&l.ID, &l.ActivityID, &l.LapIndex, &l.StartTimeUTC, &l.DurationSeconds, &l.DistanceMeters,
-			&l.AvgHR, &l.MaxHR, &l.AvgSpeedMps, &l.MaxSpeedMps, &l.ElevationGainM, &l.ElevationLossM,
+			&l.ID, &l.ActivityID, &l.LapIndex, &l.AvgSpeedMps,
 			&l.IntensityType, &l.HRDriftBpmPerMin, &l.HRRecoveryBpmPerMin,
 			&l.TargetPaceLowMps, &l.TargetPaceHighMps, &l.TargetHRLowBpm, &l.TargetHRHighBpm, &l.RawJSON,
 		); err != nil {