Writing prompt pack

In a coastal megacity protected by a living seawall, residents pay rent in memories donated to the municipal archive. When a flood engineer discovers the wall is growing toward the poorest districts instead of the ocean, she must decide whether the city itself has become predatory.
Twist constraint: The seawall is functioning exactly as designed, and no villain altered its programming.

Every building in the capital shifts location overnight to optimize traffic, sunlight, and energy use. A bicycle courier wakes to find that one apartment has remained in the same place for three…