docs: record C4 route 4b-3's connected gate as passed, with its cell-less gap

User-run against the exact 6dc7ba51 Release binary with the retail UI; user
verdict "all works". The probe proves the run actually exercised the arm: 16
[remote-teleport] lines over 7 creatures, all hookRan=True placement=Committed,
every guid in the 0x8xxxxxxx creature range rather than the 0x50xxxxxx player
range — so the corrected creature-target recipe reached the NPC-guid branch
where all three NPC-arm MAJORs lived.

Recorded as a partial pass, not a blanket one: all 16 lines are
cause=teleport-ts and cause=cellless was never observed, so the cell-less half
of the same arm remains test-covered only. Folding that into "gate passed"
would repeat 4b-2's #309 shape, where every park probe shared one cause and the
unexercised cause went unrecorded.

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

docs/research/2026-08-04-c4-route-4b-3-contract.md

@@ -674,3 +674,37 @@ and STOP and report rather than pushing through.
 - **The scoping doc's T2** describes the pre-4b-2 tree; 4b-2 already
   established the null/`Rejected*` policy. What 4b-3 actually decides is the
   wire-airborne leftover shape (D2), which neither doc names.
+
+---
+
+## Connected gate RESULT — PASSED 2026-08-04 (user-run, user-accepted)
+
+Run against the exact `6dc7ba51` Release binary with the retail UI
+(`ACDREAM_RETAIL_UI=1`) and `ACDREAM_PROBE_REMOTE_TELEPORT=1`, live ACE at
+`127.0.0.1:9000`. Log: `4b3-gate-retailui.log` (440 lines, graceful exit 0).
+
+**User verdict: "all works"** — no glide/streak on arrival, correct standing
+animation, normal movement afterward, no rubber-band or tether.
+
+**Probe evidence (this is what makes it a pass rather than a clean-looking
+session):** 16 `[remote-teleport]` lines across 7 distinct creatures, every one
+`hookRan=True placement=Committed`. Every guid is in the `0x8xxxxxxx` creature
+range — NOT `0x50xxxxxx` — so the run exercised the NPC-guid branch, which is
+where all three of the fix round's NPC-arm MAJORs lived (A1's zero-arm leash
+regression, R1's missing D2 shape, R3/A2's synthesized run-cycle velocity).
+The corrected creature-target recipe is therefore validated in practice, not
+just in argument.
+
+**HONEST GAP — the cell-less half is NOT live-verified.** All 16 lines are
+`cause=teleport-ts`; `cause=cellless` was never observed. So the arm's
+TELEPORT_TS trigger is proven live and its cell-less trigger (retail's
+`this_1->cell == 0` @0x00516386 — a body with no committed cell at all, e.g.
+after an unwield-to-3D `SetFullCell(0,0)` or any canonical withdrawal) is
+covered by tests only. This is deliberately recorded rather than folded into a
+blanket "gate passed", because it is exactly 4b-2's #309 shape: that session's
+11 park probes were all one cause, the other cause went unexercised, and
+without the probe the session would have been recorded as full coverage.
+
+To close it later: provoke a Position on an entity whose canonical cell is 0 —
+the unwield-to-3D path is the cheapest reachable trigger — and confirm one
+`cause=cellless` line. Do not treat it as closed by a teleport-ts session.