fdtdx

FDTDX framework knowledge — JAX-based FDTD simulation patterns, Yee grid conventions, pytree immutability, constraint system, gradient strategies, and inverse design workflows. Use when writing or modifying fdtdx code.

Plan-then-implement workflow — sketches a hypothesis, explores targeted areas, creates a concrete plan, gets user approval, then implements in parallel subagents. Use for non-trivial features or changes.