# Phase 06.4 — SUPERSEDED (0/16 plans executed)

**Status:** SUPERSEDED by Phase 06.7 (`1f6073e`, 2026-05-17). No plans executed.

**Original scope:** Close cycle-5 UAT findings D-51b/D-55b/D-55c/D-57b/D-58b/D-60/D-61/D-62/D-63 + add permanent mitigation (legacy-origin helper) for the D-63 origin-convention footgun. 16 plans across 4 waves (REQ-CLI-04, REQ-CLI-06, REQ-CLI-07, REQ-CLI-08, REQ-SRV-03, REQ-SRV-14).

**Why superseded:** Phase 06.4 was queued as a follow-up to 06.3's reconciler debugging chain. Phase 06.7 short-circuited the entire chain by flipping the player-movement trust model (client owns position, reconciler becomes self-noop, server enforces legality via fall-reset). The remaining D-bug symptoms 06.4 was designed to close either:

- Disappeared structurally (reconciler-snap-induced D-57b/D-58b/D-58c — reconciler no longer runs on self-player)
- Were resolved upstream (D-51c eviction loop — server-side fix landed in 06.7 plans)
- Are no longer regressions on the new model (D-55c/D-55d teleport-origin math — visually verified on `1f6073e`)

**D-63 (legacy-origin helper permanent mitigation):** still a valid backlog item — pin the `phaserOriginForLegacyPlayerAttached` helper before porting more legacy player-attached effects in next milestone (HexportIn/Out, ncol*, jokershell, watching). Captured in CLAUDE.md "Coordinate Conventions (D-63 — Plan 06.4)" section. The helper was implemented at `apps/client/src/render/legacy-origin.ts` and is referenced by CLAUDE.md as the canonical entry point — but the formal Phase 06.4 plan that would have shipped it was never executed because 06.7 made the rest of the phase moot. Helper itself is in-repo and load-bearing.

**Verification evidence:** [`06.7-HUMAN-UAT.md`](../06.7-network-model-client-trust-fall-trigger/06.7-HUMAN-UAT.md) operator PASS on `1f6073e`.

**Closed under:** v1.0 MVP milestone.