Task: Extend Apollo sim_control to support dynamic obstacles with trigger-based movement.

1. Data Structure (Protobuf):

• Define a DynamicObstacle message including:
• id, type, polygon_vertices.
• trajectory: A list of (x, y, v, t) points.
• trigger: OneOf {reach_position, distance_to_ego, time_delay}.

2. Trigger Manager Logic (C++):

• Implement a TriggerEvaluator class that runs in the sim_control loop.
• Function: bool IsTriggered(const EgoState& ego, const TriggerConfig& config).
• If spatial_trigger is used, implement a Point-in-Polygon check to see if the ego vehicle has entered the activation zone.

3. Frontend Interaction (React/Three.js):

• Path Editor: Reuse the Routing Editor logic to create a smooth path for the obstacle.
• Trigger Linkage: Visual representation of a "wire" connecting a trigger zone to an obstacle in the UI.
• State Management: Handle the obstacle's lifecycle: IDLE (waiting for trigger) -> MOVING (following path) -> FINISHED.