Saved real-time field evolution and a dynamically coupled homologous cloud. The converted boundary escapes the shrinking material source during this finite interval. Density is reconstructed from the exact ansatz and saved radius; field samples are decimated for display only. This is not a full local field–fluid conservation or compact-object calculation. Grid refinement reduces the final energy residual to about 0.35% of exchanged matter energy. A later unresolved interval is not animated as a valid prediction.
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