vampire-like/openspec/changes/archive/2026-04-02-converge-simulationworld-runtime-paths/tasks.md

1. Battle Runtime Convergence

• 1.1 Update SimulationWorld and battle entry points so the Burst/Job simulation pipeline is the only runtime execution path.
• 1.2 Remove or redefine UseSimulationMovement and related semantics so it can no longer route combat through a legacy non-simulation path.
• 1.3 Confirm ClearSimulationState() and battle bootstrap/reset flows only clear simulation-owned state without reintroducing dual-path behavior.

2. Entity and Component Path Cleanup

• 2.1 Refactor MovementComponent into an input/register/sync layer and remove direct transform advancement plus EnemySeparationSolverProvider runtime dependence.
• 2.2 Remove enemy and player calls that self-advance movement or branch on UseSimulationMovement, replacing them with simulation input submission and presentation consumption.
• 2.3 Remove projectile self-driven movement/lifetime logic and make projectile presentation follow SimulationWorld output only.

3. Query, Debug, and Regression Alignment

• 3.1 Route target selection and hit queries exclusively through SimulationWorld spatial data and remove legacy fallback traversal paths.
• 3.2 Clean the runtime debug panel so it exposes current SimulationWorld metrics without legacy solver or dual-path controls.
• 3.3 Rewrite simulation regression tests to validate observable behavior such as movement, projectile lifetime, hit results, and hide/remove lifecycle.

4. Documentation and Verification

• 4.1 Update simulation architecture documents and todo notes to describe the single authoritative SimulationWorld path and remove stale switch descriptions.
• 4.2 Run targeted verification for battle movement, projectile flow, query behavior, and updated tests to confirm no legacy execution path remains.