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/onboarding/GoalsStep.tsx

@@ -0,0 +1,118 @@
+"use client";
+
+import { Card } from "@/components/ui/Card";
+import { GOAL_LABELS, FITNESS_LEVEL_LABELS } from "@/lib/types";
+
+interface GoalsStepProps {
+  fitnessLevel: number;
+  primaryGoal: string;
+  secondaryGoal: string;
+  onChange: (data: {
+    fitness_level?: number;
+    primary_goal?: string;
+    secondary_goal?: string;
+  }) => void;
+}
+
+const FITNESS_LEVEL_DESCRIPTIONS: Record<number, string> = {
+  1: "New to structured training or returning after a long break.",
+  2: "Consistent training for 6+ months with good form knowledge.",
+  3: "Years of experience with complex programming and periodization.",
+  4: "Competitive athlete or highly experienced lifter.",
+};
+
+const goalOptions = Object.keys(GOAL_LABELS);
+
+export function GoalsStep({
+  fitnessLevel,
+  primaryGoal,
+  secondaryGoal,
+  onChange,
+}: GoalsStepProps) {
+  return (
+    <div>
+      <h2 className="text-2xl font-bold text-zinc-100 mb-2">
+        Your Fitness Profile
+      </h2>
+      <p className="text-zinc-400 mb-8">
+        Tell us about your experience level and what you want to achieve.
+      </p>
+
+      {/* Fitness Level */}
+      <div className="mb-8">
+        <h3 className="text-sm font-semibold text-zinc-400 uppercase tracking-wider mb-3">
+          Fitness Level
+        </h3>
+        <div className="grid grid-cols-1 sm:grid-cols-2 gap-3">
+          {Object.entries(FITNESS_LEVEL_LABELS).map(([key, label]) => {
+            const level = Number(key);
+            const isSelected = fitnessLevel === level;
+            return (
+              <Card
+                key={level}
+                onClick={() => onChange({ fitness_level: level })}
+                className={`p-4 transition-all duration-150 ${
+                  isSelected
+                    ? "border-[#39FF14] bg-[rgba(57,255,20,0.1)]"
+                    : ""
+                }`}
+              >
+                <div className="flex flex-col gap-1">
+                  <span
+                    className={`text-base font-semibold ${
+                      isSelected ? "text-accent" : "text-zinc-100"
+                    }`}
+                  >
+                    {label}
+                  </span>
+                  <span className="text-sm text-zinc-400">
+                    {FITNESS_LEVEL_DESCRIPTIONS[level]}
+                  </span>
+                </div>
+              </Card>
+            );
+          })}
+        </div>
+      </div>
+
+      {/* Primary Goal */}
+      <div className="mb-6">
+        <label className="block text-sm font-semibold text-zinc-400 uppercase tracking-wider mb-2">
+          Primary Goal
+        </label>
+        <select
+          value={primaryGoal}
+          onChange={(e) => onChange({ primary_goal: e.target.value })}
+          className="w-full bg-zinc-800 border border-zinc-700 text-zinc-100 rounded-lg px-4 py-3 text-base focus:outline-none focus:border-accent transition-colors"
+        >
+          {goalOptions.map((goal) => (
+            <option key={goal} value={goal}>
+              {GOAL_LABELS[goal]}
+            </option>
+          ))}
+        </select>
+      </div>
+
+      {/* Secondary Goal */}
+      <div>
+        <label className="block text-sm font-semibold text-zinc-400 uppercase tracking-wider mb-2">
+          Secondary Goal
+        </label>
+        <select
+          value={secondaryGoal}
+          onChange={(e) => onChange({ secondary_goal: e.target.value })}
+          className="w-full bg-zinc-800 border border-zinc-700 text-zinc-100 rounded-lg px-4 py-3 text-base focus:outline-none focus:border-accent transition-colors"
+        >
+          <option value="">None</option>
+          {goalOptions
+            .filter((g) => g !== primaryGoal)
+            .map((goal) => (
+              <option key={goal} value={goal}>
+                {GOAL_LABELS[goal]}
+              </option>
+            ))}
+        </select>
+      </div>
+    </div>
+  );
+}