docs(L.2g): inbound motion deviation map + campaign registration

/investigate deliverable for the inbound (remote-entity) animation+position
retail-parity effort. 10 deviations (DEV-1..10) mapped and adversarially
verified against the named retail decomp + ACE port + current code (9
confirmed, 1 refuted-and-corrected).

Headline: the #39-era UP-pace->cycle inference layer's premise ('wire goes
silent on Shift toggle') is refuted at both oracles — retail sends a fresh
MoveToState on HoldRun toggle while moving (0x006b37a8) and ACE rebroadcasts
every MoveToState unconditionally (GameActionMoveToState.cs:36); retail has
NO pace->animation adaptation anywhere (position error is absorbed solely by
the InterpolationManager chase, already ported verbatim in L.3).

Registers sub-lane L.2g in the roadmap: port the CMotionInterp inbound funnel
verbatim for all remote entity classes, slices S0-S6.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/plans/2026-04-11-roadmap.md

@@ -697,6 +697,18 @@ diagnostic scaffolding, not yet the final collision system.
   tests to real-world fixtures and verify local acdream view plus retail
   observer view. ACE accepting a position is a compatibility check, not proof
   of fine-grained retail collision parity.
+- **L.2g — Inbound motion interpretation (remote-entity CMotionInterp funnel).**
+  ACTIVE 2026-07-02. Port retail's inbound motion pipeline verbatim for ALL
+  remote entities (players, NPCs, monsters — one funnel, user-approved):
+  `move_to_interpreted_state` (0x005289c0) + `apply_interpreted_movement`
+  (0x00528600) + `StopInterpretedMotion` stop path + `MotionTableManager`
+  bookkeeping (`remove_redundant_links` / `CheckForCompletedMotions` /
+  `MotionDone`), delete the non-retail UP-pace→cycle inference layer, restore
+  the walk↔run link pose. Slice order S0–S6 + full deviation map (DEV-1..10,
+  adversarially verified): `docs/research/2026-07-02-inbound-motion-deviation-map.md`.
+  Acceptance: walk↔run toggle on an observed remote reacts at wire latency with
+  no compounding animation/position desync; no stop-slide; user visual
+  side-by-side vs retail observer.
 
 **Shipped (2026-06-30) — L.2b outbound wire parity (decomp-verbatim, tests-first):**
 - **D1** — `MoveToState` now packs `RawMotionState` by retail default-difference