feat: add Phase 5 Progression & Analytics — smart suggestions, dashboard, schedule

Add auto-progression engine (ProgressionService) with rep increase, weight
increase, deload, and felt-easy acceleration rules. Add AnalyticsService for
user stats, exercise progress charts, and volume-by-day data. New dashboard
and schedule routes with Chart.js visualizations. Progression badges shown
inline on workout day view. Navigation updated with Dashboard and Schedule links.

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

app/main.py

@@ -30,6 +30,8 @@ from app.routes.pages import router as pages_router
 from app.routes.profiles import router as profiles_router
 from app.routes.logging import router as logging_router
 from app.routes.workouts import router as workouts_router
+from app.routes.dashboard import router as dashboard_router
+from app.routes.schedule import router as schedule_router
 from app.services.seed_service import SeedService
 from app.services.auth_service import AuthService
 from app.services.user_service import UserService
@@ -111,6 +113,8 @@ def create_app() -> FastAPI:
     app.include_router(pages_router)
     app.include_router(profiles_router)
     app.include_router(workouts_router)
+    app.include_router(dashboard_router)
+    app.include_router(schedule_router)
 
     # Database setup
     engine = get_engine(settings.database_url)