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>

generator/admin.py

@@ -0,0 +1,49 @@
+from django.contrib import admin
+from .models import (
+    WorkoutType, UserPreference, GeneratedWeeklyPlan, GeneratedWorkout,
+    MuscleGroupSplit, WeeklySplitPattern, WorkoutStructureRule, MovementPatternOrder
+)
+
+
+@admin.register(WorkoutType)
+class WorkoutTypeAdmin(admin.ModelAdmin):
+    list_display = ('name', 'typical_intensity', 'rep_range_min', 'rep_range_max', 'duration_bias')
+
+
+@admin.register(UserPreference)
+class UserPreferenceAdmin(admin.ModelAdmin):
+    list_display = ('registered_user', 'fitness_level', 'primary_goal', 'days_per_week', 'preferred_workout_duration')
+
+
+@admin.register(GeneratedWeeklyPlan)
+class GeneratedWeeklyPlanAdmin(admin.ModelAdmin):
+    list_display = ('id', 'registered_user', 'week_start_date', 'week_end_date', 'status', 'generation_time_ms')
+    list_filter = ('status',)
+
+
+@admin.register(GeneratedWorkout)
+class GeneratedWorkoutAdmin(admin.ModelAdmin):
+    list_display = ('id', 'plan', 'scheduled_date', 'is_rest_day', 'focus_area', 'workout_type', 'status')
+    list_filter = ('is_rest_day', 'status')
+
+
+@admin.register(MuscleGroupSplit)
+class MuscleGroupSplitAdmin(admin.ModelAdmin):
+    list_display = ('label', 'split_type', 'frequency', 'typical_exercise_count', 'muscle_names')
+
+
+@admin.register(WeeklySplitPattern)
+class WeeklySplitPatternAdmin(admin.ModelAdmin):
+    list_display = ('days_per_week', 'frequency', 'pattern_labels')
+
+
+@admin.register(WorkoutStructureRule)
+class WorkoutStructureRuleAdmin(admin.ModelAdmin):
+    list_display = ('workout_type', 'section_type', 'goal_type', 'typical_rounds', 'typical_exercises_per_superset')
+    list_filter = ('section_type', 'goal_type')
+
+
+@admin.register(MovementPatternOrder)
+class MovementPatternOrderAdmin(admin.ModelAdmin):
+    list_display = ('movement_pattern', 'position', 'frequency', 'section_type')
+    list_filter = ('position', 'section_type')