Hazards and scoring HUD

[JakeyMarsh1]

As a player, I want hazards that end the run and candy that increases score so that I have goals and stakes.

Acceptance Criteria:

• Simple hazards spawn at safe intervals; collision ends the run and opens GameOver.​
• Candy spawns near platform paths; overlap removes candy and increments an on-screen score by a fixed value.​
• Score text is visible during the run.​

Tasks:

• Obstacle component, basic spawn in SpawnManager, collision → GameOver.​
• Candy component, overlap → score++, remove candy.​
• Minimal HUD text for score; update on collection.​
• Test hazard loss and candy scoring together.