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/workoutkinds_taxonomy_test.go

@@ -18,8 +18,8 @@ func TestWorkoutTaxonomy_SeededWithEightFixedTypes(t *testing.T) {
 	}
 
 	wantNames := map[string]bool{
-		"Easy Run": false, "Long Run": false, "Threshold 30'": false, "Threshold 60'": false,
-		"Tempo": false, "Interval": false, "MAS Test": false, "Race": false,
+		"Easy": false, "Long": false, "60' Threshold": false, "30' Threshold": false,
+		"Tempo": false, "Intervals": false, "MAS Test": false, "Race": false,
 	}
 	for _, k := range kinds {
 		if _, ok := wantNames[k.Name]; !ok {
@@ -34,3 +34,31 @@ func TestWorkoutTaxonomy_SeededWithEightFixedTypes(t *testing.T) {
 		}
 	}
 }
+
+// Every list of training types (Activities filters, Progression's kind
+// picker, Profile's Training types card) relies on ListWorkoutKinds' own
+// ORDER BY priority DESC, name to already be in this exact fixed order --
+// none of them re-sort client-side.
+func TestWorkoutTaxonomy_ListedInFixedDisplayOrder(t *testing.T) {
+	db := openTestDB(t)
+	ctx := context.Background()
+
+	kinds, err := db.ListWorkoutKinds(ctx, true)
+	if err != nil {
+		t.Fatalf("ListWorkoutKinds: %v", err)
+	}
+
+	want := []string{"Easy", "Long", "60' Threshold", "30' Threshold", "Tempo", "Intervals", "MAS Test", "Race"}
+	if len(kinds) != len(want) {
+		t.Fatalf("expected %d kinds, got %d", len(want), len(kinds))
+	}
+	for i, name := range want {
+		if kinds[i].Name != name {
+			got := make([]string, len(kinds))
+			for j, k := range kinds {
+				got[j] = k.Name
+			}
+			t.Fatalf("position %d: got %q, want %q (full order: %v)", i, kinds[i].Name, name, got)
+		}
+	}
+}