Megadev scenes

Adapt the game's own flow and resource lifetimes. A scene is a project concept; it is not automatically a Megadev module, a Sub program or a new allocation pool. Keep the user's setting, controls, presentation and progression independent of the Lab's choices.

• Read Game flow for states, pause, transitions, rollback and choosing resident code versus loadable modules.
• Read Ownership and cleanup before releasing assets, changing interrupt callbacks or retiring work across Main/Sub.
• Read Validation for failure cases, executed tests, regional timing and the emulator/hardware boundary.

Essential contracts: