docs: overnight contracts — #330 headless collision, AP-159 S1B box-admit; morning-gate skeleton

Campaign S night shift. #330's contract pins the scoping facts so the
implementer inherits measurements instead of re-deriving them: the
builder is already presentation-free logic (the only App coupling is one
identity-guard parameter), headless has full content (_content.Dats +
prepared PhysicsDataCache), shadow-sync already runs in Runtime once a
shadow exists, and the no-window inbound route is host-disjoint per
AD-64 so registration wired there cannot double-register on the
graphical host. The local-player ProvenShapeless pin is explicitly OUT —
fixing it blind risks the K-series gates.

AP-159's S1B contract maps the pseudo-C line ranges for the part-array
find_transit_cells overload, the box-vs-cell BSP traversal, and flags
the adjacent overload's Binary Ninja signature artifact for the
mandatory pseudocode step to resolve. House rule carried: a new
traversal in two representations ships with an exact differential
referee, and the direction assertion (membership strictly shrinks) is a
test, not an assumption.

Also settled at scoping, evidence in the S1A brief: AP-157's CylHeight
half is a NON-divergence — CObjCell::find_cell_list's cylsphere overload
@0x0052b9f0 copies localtoglobal(low_pt) + radius per cylsphere, capped
at 10, and never reads height; acdream's base-point cylinder flood is
exactly retail's behaviour. Register correction follows with S1A's
measurement numbers.

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

docs/plans/2026-08-07-morning-gate-checklist.md

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+# Morning gate — 2026-08-07 (one sitting)
+
+**Status: DRAFT — the overnight session updates this as work lands. Do not
+run it until this banner says READY.**
+
+Everything below folds the deferred visual gates into one sitting, ordered so
+travel between sites doubles as #339 reproduction attempts. Launch is
+prepared by the overnight session; **the client is NOT launched until you're
+back** (your instruction).
+
+## 0. Launch (the lead runs this when you say go)
+
+Main checkout, absolute path, probes armed. The first `[step-h]` line in the
+log must print the assembly path under
+`C:\Users\erikn\source\repos\acdream\src\` — that is the wrong-binary guard,
+now part of every capture.
+
+## 1. Already verified last night — nothing owed
+
+- **#32 local edge-slide** — you passed it at the Rithwic cliff ("Yes works
+  now"). Closed.
+- **#338 step heights** — headline refuted by measurement; no production
+  change happened, so there is nothing to look at. Closed (AD-68 records the
+  benign residual).
+
+## 2. The sitting
+
+| # | What | Where / how | Pass looks like |
+|---|---|---|---|
+| G1 | *(placeholder — filled in by the overnight landings: #330 is
+  automated-gate-only and needs no eyes; S1/S2/S3/S4/S5 rows appear here
+  exactly as far as the night got)* | | |
+
+## 3. Free riders during travel
+
+- **#339 portal-space hang** — every portal you take is a reproduction
+  attempt; if you get stuck again, the log captures the readiness flags and
+  the session becomes the diagnosis session. Nothing to do actively.
+
+## 4. Deliberately NOT in this sitting
+
+- **C5c's connected-gate batch** (~1 hr: D-1 scenarios, AP-136 six-step park,
+  route-7, two-client, nine-stop soak) — standing debt by your direction;
+  say the word any morning and it becomes its own sitting. The probe family
+  stays in the tree until it runs.
+- **AP-156 scale question** — retail does NOT scale cross-cell flood spheres;
+  we do. Matching retail here means adopting a retail bug whose direction is
+  walk-through for shrunk objects. Your call, explicitly, before any code
+  changes: keep our over-inclusive scaling (safe, divergent) or match retail
+  (faithful, under-inclusive for scale<1). One sentence from you settles it.