diff --git a/docs/port/HANDOFF.md b/docs/port/HANDOFF.md
index 1e079aa8..b4300a41 100644
--- a/docs/port/HANDOFF.md
+++ b/docs/port/HANDOFF.md
@@ -61,6 +61,20 @@ authored version can be deleted.
   this milestone changes — every screen in scope is `GP_TITLE` — but do not ship
   `kind == 0x3002` as a general button test.
   (The kind is the 4th `u32` of the 60-byte declaration entry, at `+40`.)
+* **The title's settled pose is `rest` — and always pass `--primitives`.**
+  Against a plate-free capture of the real screen, `screen render --build 4
+  --black` edge-correlates **0.9163 at (0,0)**, so the geometry of `rest` is the
+  arrived pose; the timeline is not needed for the title.
+  ⚠️ **But without `--primitives` the whole frame is +13.14 too bright** (R +12.35,
+  G +13.58, B +13.48); with them, **+0.55**. The missing element is
+  **`pteff02.prm`**, the 25 % dim, and `--primitives` is off by default. **That is
+  the "washed-out cyan slab"** — a dim that should be there and isn't, not a glow
+  that shouldn't. Because the art is blue-dominant, the shortfall reads cyan.
+  🟡 With the dim drawn the mean is right but per-pixel agreement is slightly
+  worse (edge-corr 0.9066, >20 diff px 108 051 → 162 636), so the blend is not
+  exactly the game's. 🟡 A separate hot spot of +25…+38 sits on the upper-right
+  `Z` swoosh, which a capture shows pink in the game and white in our render.
+
 * **The title's motion, decoded and attributed.** After building in, the *title
   art* is essentially static — a 22 s capture measures the wordmark region at
   sd 0.06 and the bottom-right corner at sd 0.003. Two things do move:
diff --git a/docs/re/ui-title-build-map.md b/docs/re/ui-title-build-map.md
index 2f9b5b67..5dc0a8fd 100644
--- a/docs/re/ui-title-build-map.md
+++ b/docs/re/ui-title-build-map.md
@@ -351,3 +351,54 @@ This follows from the decoded sweeps plus a measurement, and the two agree:
 So the name `loop*.rat` is misleading — in this build the records animate **once**
 during the build-in and then rest off-screen. 🟡 This is about *these* groups on
 *this* screen; nothing here says no group anywhere loops.
+
+## ✅ The title's settled pose is `rest`, and the "washed-out slab" is a MISSING dim
+
+The port agent could not decide whether `rest` or its played-out timeline is the
+title's arrived pose (they disagree by 142–247/255), and separately reported a
+*"washed-out cyan glow slab over the title logo that the running game doesn't
+have"*. The plate-free capture settles both.
+
+`sylpheed-cli screen render --build 4 --black`, edge-correlated against
+[`live-title-build4-no-plate.png`](captures/title-builds/live-title-build4-no-plate.png)
+— a capture of the real screen, so this is an independent oracle and not one
+renderer checking another:
+
+> **0.9163 at shift (0,0)**, and per band 0.92 / 0.78 / 0.93.
+
+**Geometry is right**, so `rest` is the arrived pose for the title.
+
+### The slab is the 25 % dim, absent — not a glow, present
+
+`rest` alone is **uniformly too bright**, and the excess leans cyan:
+
+| render | mean (render − capture) | R | G | B |
+|---|---|---|---|---|
+| `--black` | **+13.14** | +12.35 | +13.58 | +13.48 |
+| `--black --primitives` | **+0.55** | +1.30 | +0.89 | −0.54 |
+
+Drawing the `.prm` primitives collapses the excess to nothing. The element is
+**`pteff02.prm`**, the 25 % dim quad (build 4, rest at `t=46`, fade `0x40` = 64 =
+25 %) — and `--primitives` is **off by default**.
+
+So the "washed-out cyan slab" is not something being drawn that shouldn't be. It
+is the **dim that should be drawn and isn't**: without it every pixel sits ~13
+high, and because the title art is blue-dominant the shortfall reads as a cyan
+wash. ⚠️ Any consumer of `screen render` that omits `--primitives` on this screen
+gets it.
+
+### 🟡 The residual: right on average, not right per pixel
+
+With primitives the *mean* is essentially exact (+0.55) but pixel agreement is
+slightly **worse** — edge-correlation 0.9163 → **0.9066**, and pixels differing by
+> 20 rise 108 051 → 162 636. So the dim's average contribution is right while its
+application is not exactly the game's (blend mode or per-region alpha). Not
+diagnosed.
+
+### 🟡 And a second, localised excess
+
+The per-tile map shows a hot spot in the **upper right** — tiles at
+x ≈ 800–1279, y ≈ 112–225 run **+24.8 / +37.8 / +33.3** against ~+12 elsewhere.
+That is where the title's `Z` swoosh sits, which a capture from the first
+iteration of this work already showed **pink-tinted in the game and white in our
+render**. Same region, still undiagnosed.