docs: R2-R4 visual pass PASSED (user-verified) - file #165 wall-swallow + #166 slope-landing sled; next entry R5

All four visual-pass items confirmed by the user's eyes (jump/ledge
momentum, run-in-circles blend, stop settle, retail-observer view of
+Acdream). Two observations filed from the pass:

- #165: retail movers observed from acdream penetrate walls a bit
  ("swallowed") instead of stopping flush - remote-DR collision class,
  PROBE_RESOLVE capture is the first investigative step.
- #166: downhill-jump landing glide+bounce (retail sled) absent - the
  register predicted this exact gap (AD-25 risk column) - composite of
  AD-25 + AP-7 + TS-4, retire together post-R6 per the user's
  "polish later" call.

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

docs/ISSUES.md

@@ -71,6 +71,72 @@ actually steps at (Player_Move.cs / Creature GetRunRate usage).
 **Where:** GameWindow `TickRemoteMoveTo` + the L.3 M2 queue chase vs
 `MotionTableDispatchSink` dispatch speed. Related: TS-33 cadence rows.
 
+## #165 — Remote entities penetrate walls ("swallowed a bit") before stopping
+
+**Status:** OPEN
+**Severity:** MEDIUM (visual-only, remote view)
+**Filed:** 2026-07-03 (user observation during the R2-R4 visual pass)
+**Component:** physics, remote dead-reckoning
+
+**Description:** Observing a retail-client mover from acdream: when the
+mover runs into a wall, the observed remote runs INTO the wall a bit —
+"they get swallowed a bit by the wall" — instead of stopping flush at it
+like the mover does on their own screen. The mover's client stops them at
+the wall; ACE's UP stream reports at-the-wall positions; the acdream-side
+remote body ends up partially inside the geometry.
+
+**Root cause / status:** Unknown — candidates, in suspicion order:
+(1) dead-reckoning overshoot: between UPs the DR tick advances the body
+along its velocity; if that segment's collision resolve doesn't stop at
+the wall (or runs with a start position already server-snapped into
+contact), the body tunnels until the next UP pulls it back; (2) the L.3
+M2 queue-chase walking toward a waypoint AT the wall with the remote's
+cylinder ignoring the wall plane (check which resolve path the chase
+uses and whether it carries the remote's ShadowEntry exclusions only —
+#42 — or accidentally broader exclusions); (3) retail remotes collide via
+the same per-cell shadow lists as the player (see
+feedback_retail_per_cell_shadow_list) — verify our remote resolve
+consults building/EnvCell geometry at all in the observed cells.
+NOTE: capture first — ACDREAM_PROBE_RESOLVE on the remote's guid at a
+wall shows whether the resolver reports Collided-but-position-inside or
+never sees the wall.
+
+**Where:** GameWindow remote DR tick (`TickAnimations` player-remote
+pipeline + queue chase), `PhysicsEngine.ResolveWithTransition` remote
+callers.
+
+**Acceptance:** a retail mover pressed against a wall shows flush at the
+wall from acdream, matching the retail-observer view side-by-side.
+
+## #166 — Slope-landing glide + bounce absent (retail "sled" on downhill jumps)
+
+**Status:** OPEN (post-R6 polish — user: "we could polish later")
+**Severity:** LOW (feel/polish)
+**Filed:** 2026-07-03 (user observation during the R2-R4 visual pass)
+**Component:** physics, landing
+
+**Description:** In retail, jumping down a hill often lands with a short
+glide (sled) and a bounce before settling; acdream lands clean and dead.
+The user explicitly classified this as later polish — "a bit deeper
+physics than this."
+
+**Root cause / status:** This is the REGISTER-PREDICTED composite of
+three known deferred deviations: **AD-25** (landing wall-bounce velocity
+reflection suppressed — its risk column literally names "slope-landing
+momentum won't reproduce"), **AP-7** (`calc_friction` threshold 0.0
+without retail's 0.25-with-state-gate — sled deceleration differs), and
+**TS-4** (Path-6 steep-poly slide-tangent shortcut — airborne-steep
+contact chain diverges). Retiring those three rows IS this issue; do them
+together against a retail cdb capture of a downhill jump (velocity +
+contact-plane trace at landing).
+
+**Where:** `PlayerMovementController.cs:874` (AD-25 suppression),
+`PhysicsBody.cs:307` (AP-7), `BSPQuery.cs:2001` (TS-4).
+
+**Acceptance:** side-by-side downhill jump: acdream glides/bounces like
+retail; flat-ground landings unchanged; no micro-bounce death spiral
+(the reason AD-25 exists) reintroduced.
+
 ## #164 — UM action-replay dispatches drop the per-action Autonomous bit
 
 **Status:** OPEN (2026-07-03, filed during #161)