A unit torn down (out of range or destroyed) before its visual was built still got one built, and the build's plain entity commands could apply after `apply_despawn_fade` had despawned it. That chain is unordered against the attach chain, and Bevy's default error handler panics.
The reference frees the object at once on destroy (`0x4674a0`, `0x465ec0` → `0x464920`), and only an already-built model fades (`0x672df0`). So a torn-down unit now gets no new visual work: `Without<DespawnFade>` on the queries of `attach_entity_visuals`, `refresh_live_display`, `heal_rig_starved`, `redress_player_looks`, `reseat_mounts` and `attach_held_items`.
`a_torn_down_unit_is_not_built` drives the real `attach_entity_visuals`, despawns the torn-down unit between the system's run and its command flush, and panics with "Entity despawned" on `insert<AppliedMount>` without the filter. `a_torn_down_starved_unit_is_not_rebuilt` covers the heal path. Built and gated on macOS.
Fixes#612🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
