workout generator audit: rules engine, structure rules, split patterns, injury UX, metadata cleanup

- Add rules_engine.py with quantitative rules for all 8 workout types
- Add quality gate retry loop in generate_single_workout()
- Expand calibrate_structure_rules to all 120 combinations (8 types × 5 goals × 3 sections)
- Wire WeeklySplitPattern DB records into _pick_weekly_split()
- Enforce movement patterns from WorkoutStructureRule in exercise selection
- Add straight-set strength support (single main lift, 4-6 rounds)
- Add modality consistency check for duration-dominant workout types
- Add InjuryStep component to onboarding and preferences
- Add sibling exercise exclusion in regenerate and preview_day endpoints
- Display generator warnings on dashboard
- Expand fix_rep_durations, fix_exercise_flags, fix_movement_pattern_typo
- Add audit_exercise_data and check_rules_drift management commands
- Add Next.js frontend with dashboard, onboarding, preferences, history pages
- Add generator app with ML-powered workout generation pipeline
- 96 new tests across 7 test modules

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

werkout-frontend/components/workout/SupersetCard.tsx

@@ -0,0 +1,71 @@
+"use client";
+
+import { useState } from "react";
+import { Card } from "@/components/ui/Card";
+import { Badge } from "@/components/ui/Badge";
+import { ExerciseRow } from "@/components/workout/ExerciseRow";
+import type { Superset } from "@/lib/types";
+
+interface SupersetCardProps {
+  superset: Superset;
+  defaultOpen?: boolean;
+}
+
+function formatTime(seconds: number | null): string {
+  if (!seconds) return "";
+  const mins = Math.round(seconds / 60);
+  return `${mins}m`;
+}
+
+export function SupersetCard({ superset, defaultOpen = false }: SupersetCardProps) {
+  const [open, setOpen] = useState(defaultOpen);
+
+  const sortedExercises = [...superset.exercises].sort(
+    (a, b) => a.order - b.order
+  );
+
+  const displayName = superset.name || `Superset ${superset.order}`;
+
+  return (
+    <Card className="overflow-hidden">
+      <button
+        onClick={() => setOpen(!open)}
+        className="w-full flex items-center justify-between p-4 text-left hover:bg-zinc-800/50 transition-colors duration-150"
+      >
+        <div className="flex items-center gap-3">
+          <h3 className="text-sm font-semibold text-zinc-100">{displayName}</h3>
+          <Badge variant="accent">{superset.rounds}x</Badge>
+          {superset.estimated_time && (
+            <span className="text-xs text-zinc-500">
+              {formatTime(superset.estimated_time)}
+            </span>
+          )}
+        </div>
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          width="20"
+          height="20"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="2"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          className={`text-zinc-500 transition-transform duration-200 ${
+            open ? "rotate-180" : ""
+          }`}
+        >
+          <polyline points="6 9 12 15 18 9" />
+        </svg>
+      </button>
+
+      {open && (
+        <div className="border-t border-zinc-700/50">
+          {sortedExercises.map((exercise) => (
+            <ExerciseRow key={exercise.id} exercise={exercise} />
+          ))}
+        </div>
+      )}
+    </Card>
+  );
+}