What specific Zwift route badges could be leveraged to create a structured training plan, and how can riders use these badges to set realistic and achievable goals based on their current fitness level and power output, particularly in terms of chronic training load and acute training load management, to ensure progressive overload and avoid plateaus, and are there any Zwift-specific features or third-party tools that can aid in route badge goal setting and tracking, such as automatic ride planning or customizable badge-based workouts, and how do these tools account for variables like rider fatigue and recovery time?