From 7eeae3006a7bb92ae31ba8d2b402891f3a31f070 Mon Sep 17 00:00:00 2001
From: Sylpheed RE agent <agent@localhost>
Date: Sat, 29 Aug 2026 08:46:53 +0000
Subject: [PATCH] re(ui): the focus ring SPINS, the game draws it, and the leaf
 owns the f record

Three things, all from parsing ptbtn0Nf.rat as a build.

1. THE RING SPINS. Its two keyframes differ in exactly one field: rotation_deg
ramps 0 -> 360 with position, scale, alpha and tint all constant. A spin in
place, the same shape as the GP_BUNK example already recorded.

2. THE ORACLE CONFIRMS THE GAME RENDERS IT. In the OPTIONS-focused capture the
ring's bright head sits in a completely different angular position from the
sprite's own -- caught mid-spin. This is a SECOND independent confirmation that
rotation_deg is drawn, now on a different screen and a different element from the
ptloop sweeps, and it raises rotation's priority: it is not a title-only concern
that sits off-screen at rest, it is the main menu's focus marker.
NO ANGLE IS QUOTED. A brightest-region centroid says ~250 deg, but the control
refuses that precision -- rotating the sprite by a known 30/90/180/270 and
re-measuring gives errors up to 19.8 deg. What survives the error bar is that a
<=20 deg error cannot manufacture a ~250 deg displacement.

3. WHICH PLACEMENT WINS -- correcting this page's own earlier caveat, which said
to use the leaf only for elements the parent does not declare. Right for a BASE
record, wrong for an f record: the parent declares NO element for ptbtn0Nf.rat at
all (zero of build 5's 16), so the f record's placement comes from its leaf for
BOTH elements, label included. The label's (-7,-7) is load-bearing -- the f
sprite is 13px larger per axis and -7 keeps them concentric (535+96/2 = 583 vs
542+83/2 = 583.5). Corroborated against the oracle: the focused-minus-unfocused
region is x 505..703, and the leaf predicts a right edge near 707 where the
parent reading predicts 714.

Also exposes UiBuild::records (name -> (offset, size) of a nested .rat leaf).
Nested records were parsed into a PRIVATE map, so a consumer holding a UiBuild
could not locate a leaf's bytes at all -- which is exactly what blocked the port
from reaching the ring.
---
 .../examples/rat_leaf_placement.rs            |   7 ++
 crates/sylpheed-formats/src/ui_layout.rs      |  15 ++++
 .../ui-layout/focus-ring-oracle-vs-sprite.png | Bin 0 -> 14823 bytes
 docs/re/structures/ui-button-focus-record.md  |  68 +++++++++++++++---
 4 files changed, 82 insertions(+), 8 deletions(-)
 create mode 100644 docs/re/captures/ui-layout/focus-ring-oracle-vs-sprite.png

diff --git a/crates/sylpheed-formats/examples/rat_leaf_placement.rs b/crates/sylpheed-formats/examples/rat_leaf_placement.rs
index e550068..9bac6e2 100644
--- a/crates/sylpheed-formats/examples/rat_leaf_placement.rs
+++ b/crates/sylpheed-formats/examples/rat_leaf_placement.rs
@@ -55,6 +55,13 @@ fn main() {
                             r.map(|k| k.y).unwrap_or(-1),
                             el.keyframes.len()
                         );
+                        for (i, k) in el.keyframes.iter().enumerate() {
+                            println!(
+                                "            kf{i}  t={:?} pos=({},{}) scale={}%,{}% a={} rot={} tint={:#010x}",
+                                k.time, k.x, k.y, k.scale_x, k.scale_y,
+                                k.fade >> 24, k.rotation_deg, k.tint
+                            );
+                        }
                     }
                 }
             }
diff --git a/crates/sylpheed-formats/src/ui_layout.rs b/crates/sylpheed-formats/src/ui_layout.rs
index 194fca3..1154a09 100644
--- a/crates/sylpheed-formats/src/ui_layout.rs
+++ b/crates/sylpheed-formats/src/ui_layout.rs
@@ -322,6 +322,20 @@ pub struct UiBuild {
     pub elements: Vec<Element>,
     /// Sprite name → (offset, size) of its `T8aD` child within the bundle.
     pub sprites: HashMap<String, (usize, usize)>,
+    /// Record name → (offset, size) of its nested `.rat` **leaf** within the
+    /// bundle, e.g. `ptbtn01f.rat`.
+    ///
+    /// Exposed because a leaf is where a focused button's extra elements live —
+    /// `ptbtn0Nf.rat` declares the focus ring `ptbtneff01.t32` **and** the bright
+    /// label, and the parent bundle declares no element for the `f` record at
+    /// all. A consumer that walks only top-level elements cannot see either.
+    ///
+    /// A leaf is itself readable by [`parse_build`]: its first 32 bytes have the
+    /// same shape as a bundle header, so
+    /// `parse_build(&bundle[off..off + size])` returns its elements with
+    /// absolute design-space placements. See
+    /// `docs/re/structures/ui-button-focus-record.md`.
+    pub records: HashMap<String, (usize, usize)>,
     /// A guessed context from the sprite naming (e.g. `"tutorial"`), if any.
     pub context_hint: Option<String>,
     /// True when the declaration table was unusable and the build was recovered
@@ -599,6 +613,7 @@ pub fn parse_build(bundle: &[u8]) -> Option<UiBuild> {
         design_h,
         elements,
         sprites,
+        records,
         context_hint,
         from_fallback,
         placement_order,
diff --git a/docs/re/captures/ui-layout/focus-ring-oracle-vs-sprite.png b/docs/re/captures/ui-layout/focus-ring-oracle-vs-sprite.png
new file mode 100644
index 0000000000000000000000000000000000000000..1c6c4fd6f43f461d0035f5127e4b2500d770c960
GIT binary patch
literal 14823
zcmb8WX;>0y+Xn1RGh@@{v^r(Rv^r+xmXV=QSvi?YWkn`vYHFoP3Ph;j%sA#~rCFKa
zMrvYe;;6ZR0$G_G;(|&hOQwQ|!W3J8z{kALcO2jI9q;kH$I}n~z@MAzzLxVk&-2bW
z>F>RK$%Z8s78c8o|8nHCg~iu03yZHFFaFy6O=1UnqlJY#<@k|9XKohG^Nv5;F2)sq
z)Lq@rDN2$>VFE8T9M9NdAN1sC(DO@US?T*T<}6nH-gW$5+JjvUJuWu24NLDGZM&Pc
zY;o-RTdN(u-qlUMeEZ3>dk<Nswv74Ji$SDH@~(PZ=t~kZc*@R`Ic++}b+4%M=hr%(
z40xNY6h@uW2@F47O+GWO$&uUr@wRzVEzHMm(_=vmRQDA(OgZ9STR>}y!D=DC0hC#Q
zkr}*;-*;&uFaUj(y6uSEerTmFKyO4U>J#;i21rH{pIOK6cmsduYK&s#u1iYK;4{%j
zgpc0}FMrN)(%4#9{JQ3^hhJG(d>>)I$iiaPo73M}SZupfzRbenmmg28x3IY9^vK1+
z;-|1k5ab?Y#*aHSQ(T4FY|YJ%Z;i*T<a}Ev-%%g)>9?~>vd9h*1<SlgbL&hmSbeH>
z*rJU=z>XV{A6DF>Q@|+r`ev#Cd}Naeyss<Os;I@^_b<r)e22fgHVy)vjn-Rj^UGd`
zMp{@Le0jdde5gO_{?9}G<??Wm;Q?bLqS>y1_~+c!x4yoYgdKFs%B-r}lRFoCj~>dH
zd;Oa63<rt_)pv4aov6t0>Q!VU@}F}wj)7?xR%-AcI!3^Ue^#og#?X^1eca_N_1NL;
zkH5u34=Zyc*e%5I@CW>WxuSM{j<TpCn<rprKmF#Grt=F<IRr5P+}Ne9)^!1jP6kDK
z`}OGJJ2QNgNb%-I5Ul(KgVeQJBHBZKA2Mo8Z7IH&LXugE60_!49mS-g(j{F9PTt$O
zML$ASUAKJ@p)01_o*qjKA%Od?dA@;L^HVb%tkMo!-#SbYQ;C+yj!kEwWVsU9EZxvR
zFOIGm6Y$o<;;XXh$Su7t#+~Ndz5gF?ch|o~KDT6`n)v?rP3nmo+@%>(<mYs;%IbIQ
z5@D22Y{l!5rM&Y9VL^!hx~qzpIdhhO&OL6Khj+AZ{FC8E>a`8PB>Q6QX!tN{rWa35
z(Qpd>3IMS1;jKsN&VJ9$u=lgu0XTAvRDkz&zrY!{>P!$Yc6aVSAhWq-1W1>7Q7l*c
zV5SK#PnO?4LbYEz9c8M+SYV=M`Q=2%skR#Nsc}t|sVRUX?H{pBbd{$w|BGDte-pTT
zKDmXuwB{|v*QNm-<>DL^rQ68RhvP5KE>=qx_IxsolX%mz+v9h!rlw7&W-?Pj;35!M
zt&5NSyOVXzedd>t5mRc5W<5W<t~Gn!gKC(O+By0n$W8{rM_QrPxoqM*aBAVC|HtMD
zoik<iq=>TZNvmVW#ZvLBv+lKTXdY*lL#Ns{&N>Xh>-?jaobNk~37_rwt+-!3-3FhD
zp)L<J;IHyax?KWiXML$XbK8xh_xAnIwf*O!{Qq5BUC?S__8>CYblo<utL>M?wAB%<
z_T=870;AukbUrosTTzst^=z4Y+#!Tqz#I?wS^3f47eaPKdA>x4Cj^$v_}P{q`r>6u
z<2BM75t{cgd!9!y6i5eD=z125pA`$)L0PqurFzd!avo4+g+G!0G@U7Xy=>IK3)@(l
z<cf;?a5ThSlyyn(Eb{r;PgA}D(WAYNKEdvc>6}ikCpQCX%&B`&SXr1@3EHFZ;%B?_
zm}SjEj-sQam@8`An~)y~pT|F-3GR%YnzG%BUO4+7deOiC?SJ(NhwQ562>=2U8-L6n
z&V2GS8vbJX$~%8Z5vd^ScD3778WuA0mR?_|rdJ<&ZEK0~XbsUU&FtCO48vU3u~9#;
z;-#>F^1)7Kb%hQc%muiRxXLTA&ZqJZYPqN#m2m)yak9<7$WEFw9XPy_>)DgKLN!$`
z8F)wmhwuE!L8>#naEW}@g}>7pF|`O+Q3X5RrHpuEV>g`~sd!$9DE4p=+XWQeSJe2y
zo$~KY(p)%1Sx>Bdu1DJ^<xVF@JLMpue<uJfH2VJB=f6w(E*%mQlQf{eJD&qzeM!GL
zyDO2?eLbLDBXh^<*R)Co2#lkrW-HXU4`Uo*c^%XKze{fa;iGZQ^kK$1$z2KkBi15C
zRN^L<npnBvlFUOC1)*FBW0%#~6XJZhdsJ#wCLUfUW#QM+HVrn?q9bafIoXn}ng`QS
z5Oq@6>`$ULOKz|WzpQO9d<*w@=3LJjGVRo|4{UkB4~n}>DGsZXwiAZVx?gypxEdMA
z_Ku<H>l0v@aQ{NEqu6@SjFv7|8T*Td<j9Ea6o-bSr}AZT!P`6q5UP@fI3J}5P`Ek7
zF^$at&pigyc^O9a$%Z$-$%`9$@dZ(-k5O{eK@}u0hQ40^7Y%oT&+>~bxe+iPZJAJP
zh4$Orl9`GHl?TsHlK~M2fK7l1np+%%N^F(+uVd+fotqt%>Z19_1gs6lfNGSs?@cJ?
zx*F=qoezixP!X2Y4ma%)M(8}%*J=5GN_QVsUxeYdIl}lyLao|icJ0ZI39hE^KbV7S
zvw@X6DO=X@!kin@1Tf5fhj`@Oad%SeES~kIGHGf-slA<m7kab1w68SRy0vsWmG}aQ
zfS}a@M?wc9Y-l$h79a*nN5nCeh%-UsGoY~X7U2`oiYuZT{fJZ~I-tZn*_-J4C3T}G
zKZ4AtUWuCmhcr<T(UqGv3C`8klo5TiZC0GUn9`h+=S2r_V!qFn+#ndH$hv!0C@6U^
zeLc6g+d*OU%iabovf+Lkp9polj{b&|amCM$96Ez-7{EPb4ey6pK1C?e_eaRzg;9Xq
z<vj_3%O&QP>55%~EFAYwaXdVk=#;40%;5$Df=isn$F<p{ve`}o=(zi^?Zd0}_Tto$
zNpqaIxV$<^r*D%|Ev;a8Ycn_%QwuNM4S1Pnxja^!Ek(%Q{VX$0G<ij^dj&8AJ|<K+
zcEd^q#54_H2yYA`H>Tu3Gu;7A1YIW)g-<BU@_s?w`jXL+r1Lm(!~1~dc_QM#dSX%!
z<kJ<^51ReSKclS38)|y6&MvljITX;tMa_T)I<a+ypIc#<_GW48Pm?*uwgM@wcc_V$
z={%ToJ63Zt6oM}6??sUvmg+6Z4xAaRGiaa|#DAc08qZVQ!2T?TQ?k9nJ}t#X>m2S@
zf?A}!Dd+*twVpoHvBTxHtD&A(`t-}lQDIeJ`RYP#9rB3bN9gmNeYTbP8y_epXtI_&
zO(?sl=aorLWy|^5#Mr_|iq#eVUD^i#j)4#Wd0fj%YEs4*EK|ns3mu5PayUw6nzvbP
zu(=j-R`?rq6gZXqoGd?6hQ_5=iUZvd)`>~M0vFr-cWc@X&&xa#^#WByY@#fcy6A7{
zzrn-*-ID(uPd;Ov;9%mbH!7Yd#_e1hR8swYd*oNJ^RMD$J6F(>o&OmW7rmfAWDe4b
z14hk5QaTTBj(T3ILCz8c#**7KFQnuSn5`*t=?r_EJ)Ys_NdnT=oy=E!mf6BVH>15V
zK_NJA=;~r4L)OkB(|XK5jr%tDB}3U#qKtzge?2rxLvpw}{g8^BJ}j9WB{EL9zk7%@
zrL0ll*5}hQBsN;dscZlzJ08i&{yxV*XwPJ9UGAreY(s~zy*p*j`awF8Q=v4bOdqEk
z`XSHcHvyoEq}_l66sw0)gwLrN&{g*VdSTDPclLI)fI$C!s$`1%k0MDQs%Fnk6&#k)
z_s8>kf$9CC_Ah8$F5kcp&Ct%7mTJx<{)sDuA%v|J3w<8I##`Z!^$sKN9trS2>Xl4c
z`<ktEgBDqkVC?Qq)Ccfu9lp(m4U;gqC(!ch2pmssrTQ4^JTC83s_o9H)S9AU?#R>O
zab|Owe!FQwq5Hfb;Lt1;jq;gIz9B27JeK(Z%ZF8eQk<$y)J+&71+2U)>r;wi*1(>;
zN|x*Psgtg%Cj|i|!h6+K+jiB1R>3frF3Wy-5Rnk4ckXnY)z&Rd0KfCF69*WEy{8s{
zV5AQs1-nhmZX3;G-!-%d*ElS~Em(?d28nzCOJ${w(iPN0MwnkkFQwz8jGdwb-Ai%a
zI~{O^@Mf}`f)X-=t%g7mK2Uy+DoPf2{mW|ivd1Oe6=O(t11na(2?Fddj&6TOfmuKK
zC+l9QBT)R3jYNOerL$}(P-S$44=6$xo>07#)nz)vvt_D}Z8y9DR0NaqY6lb{#dntu
zqQ8QMKJ~SVIzOA$C0XtXN%DmPH+hsbn`YeU2Kj>Mdv{Y~z^p>m8p?m9$P*0fG4%3%
zT=(08SYb;X=d>oOzI;<Ucu(12zQK~qy`qZ0-k34tbL8`Ysn)*!@>*8z$uqPwXYQgm
zUumI$_Dt3!DS7635iFiwxJ^nq$Yv@VbT+7o79*^c%>1OR*4;M<&U)4c<EA~XA7jco
zA`%(kjMh@Mubrr8{sLP_EoUAYPtqrVK_2%MQI&EQF1qJ5#VdkA#a4p$Y7d5{AFY5O
zV(@mB9Lt_WI-vQ;-<sQHlD^~_xuba_-t_NF;D4&}bF>PYpKrT*A1u1Gd18a%Yiy-{
z9mUd&b2<(}u7%z~VV;~HgcEbm(oLOvq&r_(Lu&NS(OHt6FLDcXk_D)MV-D14V=7Qk
z(4$3FNmnS!1u4Z+#SrnV{QBc+E58bHbh9#kf0Oe=MXy-7&<qCUDC`_13j8b(O`l}q
zPsmL%Ddn}V;7D9lnla>$$Jt(+ZcOuz0OvF_f2#|0=sx^+TC#vKGO`@{YeM5%VV>?U
z<o23-1+Kvohl-7}Am7H)+kvlCt_fflIB`(q?r!=ZMnOc)DIcE{0zyYfQY~N>^ag<U
z)|@eZn6`B%J){*RB=|AoJV!9M=50MgNra*MTEFMO5xJNT(q$!1(`2uCZH;zfOOVcn
zUN}47a6wpC{g@e#E0=rBo1+ddYjwd@XM2qjxp#M+PzCXfWlPU~my-Km?Bf5rh8_yg
z^Lr4GzgUC1Spq$Qtt8!Ygw>P`p})$bcAE<cJP<H0&XwhOe0o7HOi`E7HaSz2AF<k5
z7@LIGo@A47N1;n}$K=uO+}z*eO2oK|R+lX4pSv7z9$qEYRtVdf$z;_nLBCb41kbt+
zwN5Yw2S^m3VzMP%!-s&{UTr<cdK75N-WZ)E(y#K(EnzFwl)8c4Dl9B6bfh*$Jv>6&
z;KCaiht`0>jPK(2=Kk5*W!IqG&xIzOnssQ}DBZdbHiF9=yd~>d24weW14#>i7N$s$
zG}N@tITUwFbB3`H4V+%Egd%#e%>#7em1_AJPH=*mml?*)RafhPFW;`If&F%+X#i?u
zQ@|_6TWOXJ%-SSZMJ3|_uu+gAoY4fTb!?AKGm7)iW<VjM9fl}*ACTsx80C!}p7%+h
zc&(<EI(@GGUv$TR%ydyXJ|9AJcu;`9BYjQa_96MEE^nIS>8x{8ZBFR)geRnzkR%_3
zNs_*AYGF8PyI83GO_q{uILgnU(#x7_t<dF<-EcWKC^43OzTB0x3sAs9!vgt$)3CVw
zXC)TH^$KIl*)UR`76x6<I6eFB(0Zjx>zb#+E?ASe-0mVA9QRqR@vCVcwl!Z~=Z#2~
zl|No-J(Y|P)<i|M$|dv7wOv@}0dZtYWz5f6)R^R-V31=N(BaD3dqW$ES4-tTrlR?|
z>nWuBW?-N+cjqz<a-v1{%tPY^zo`2JL_<WXW<jo^L$=(#wt@!a6o5t;_B*dZbp|U-
z9q?#S{u6?Bg&TUSxPdBT?DDmXq7IA$$*VbyB48z!6j=h{zRP4FDHIy$F9sXqXZ0q%
zl%<xjM<w%oJa1{IamR<+|DlxrQ;h$er8pn-NOuLTCr~RL*W^+hr_zekFYa71a$cVD
z7zCL9nF4rVg=!XY0Q~!k?vu6ZVr>jR9y?)4n@mu_`ML3`v?y}*cYUY(L9PgEePW1|
zi*EdtGJ5vc9_7Uifs<W++qaM;iV%OLe(nN4Qp<MG8RU+r$cZT$SZ-Cs;fjSxuuv%Q
zhEk7JWKt4QC-^GK1vqoYud!6FRKKc0CWKs@*?Bxzsu?3lqZt*_t&2DXb&VMS>JPrq
zHxJW4y@b_~pPso3oKF5L(HFri6*Ct;2f3%r9y0ii6-l-(<VItr7Vb8~!)DAqg{Vyk
z)m+&SNb6y(wON8&Sjq|N?nC@g;fmRZndU~tF*7IyA1KW*;bu^vAip5H^+s|a+io?k
zsD(0g0|kA<t4#F7;EKR4pj50^Tv)i;OljV;_!ocoe+T<nY+v9f*~j@GP?4LTN1eSC
zvz+2p*4!L0QNZ?lBsIW1%42@8<Erq2)|%{oS4T<y%Xtuud@=xyFwf^i3TSUlr5j4*
z(X^BwS!qp1MqK?$cE#B7{Gnn<nUuhB-pNu=zZ|xW?KnizU}~jYgCSZaHFEkT(kY~s
z#L)Ixl!@mDCx-N+Eq{JUn;a_Ga3oJMIe?}iC#zOXU-Dw77iebaXLM~qB(kU=Ymom0
zQaPO&RL+>pU4%<}7y+jx(1~}KdzxN$s_=!iDJeU|!sH2BVZR2^t&R1zP8DG&J=&M%
zTFK=}8Gk-#1+{6(!Q|Ls8Y0udg9>^Qf#<9xKNiI`1|lo2HKW$YM0kZlWI*`@4;{|3
zee;mcLzGgSJU4SnBuN^>NavRjPmzns&_PLsDK)8w=P}O*>LiMjGZ(x_lFWnh4_}K6
z>9Bq|sG1~#z-B7ONhwFUD`mVv_#^Fa0yETpq_A~IM2#mf-j2BaDHvY)E=`uFtf>SM
zCLa+i7E&de7ERz9@_~z2zoA$9Or?_%mnhYS)0zl|8csL75~DjNhALDlMdgV^Q;L=*
zF!tg26?J^Fc|JPPNzYt`-WtzqeOW9`@7dG0Vk%T|Fxx4avvoZ)g0MA~@|2f*?^sMi
z$TH~kLZFrH14ZYaS%*us;pkZ#M+xY(=ZIpuSk}Jl20A^e4&x^mzi%o8k}pTL?vk~=
z#rs|YcC8^KDhk-DGdjUqu2OFXb(`Ro)lSnju}@9E>HE-OM?(=(GOz(Sf|&~z0guXc
z&W$pg#=G`^xQUX)?7YHH|FdH3{jV~3BLRE_F5P)hru!jHcD-fZE99SkvxIJDd<tP)
z&uqp>Ks7Td5VAZ48H@=Rx#E%!aN@7zk?T*kR?MS!zZhA1p@B5esfsvU0&T_)h&zfg
zNXDnr2t*8^2E2lQ8X#s5@465OngPMRZ>pDjrhLGgJMm{v9nupOwnZ!t;V5oA-y)`K
z+k&e5lcHv=DVY=O6UE+mK%eU5GNssHLGaIz_sj%bAe=tsJb)=K9a4D9MhsTsR)o~m
zxFE$$wGoK|R>__-yZOmgC!mdE%+{@u<jD`N&ij6tGX54tS$Ip8=C|A@jt7LyN~>bf
z!VdRBsqk`*c6m~)S16()K+5F{Mli)Z-l<nG(;F1#zF=ds;2{e(apw!R-N@)of*S#J
zvFHjqIMONLK`TC^dhs`gzmw19YaknEDzvTs5KnUu`>ixqQ*A|(3bBpi49-=^kw;gO
z*ceq>{V@E2lM8)4hbl?p$HdduV?q)FCD+F_MU}gz$R7p>OVWBl1Oui~_IfW8w-Abr
z-XnH|kD%|7Oax;H4D5DKfmp7>7D5vtL<!>(MKQ%La|g?j2UVj{5S+LPDE>(K9(*Re
z2}mct<c+axhg4CYPKSP<*FQ5~Bo7^gl3O1Pi?YrHpsmQx=GJK!Zy*TPWb@Xp;^(@%
zm^rCd0M3A_kyH}!zQTgZNxW;mY_NWCytcNsm)hNPsg{X`v&Yl+937DXAKLpzw)5Iu
z6t{Sp9dqBBm5{Ig?@szJ>EwJ6;oYG}66|8~>dBCHls7DQb4vvaNhf&_D(3yxy}uaB
zU7@~#&Yid(09{8*ll2WZTyvM_(Y_1QZ>*6qlyn(#ji}O)+_po!r(mE!=8tIV?^E3)
zD(+kBXbE!8*#kWE5D|ZzJEIWf3s~*G{X$x0e{YYSQhXrgaHx2)u2?P>B}FIsi}aVX
zvhPMJMK-a<L)=*@l_<S%-1$y*1<$hy7|}@~M9R*PEvA|vDXiqwJ6wS)d_6J^c)PMt
z?|(-i$R)a9DiYE*bNw=8Ew9y4rJ?VCxj`xb-4M1G-z~OG@;0O2N=eVNnwl9iQ{3?5
z4Bj_{ia!m*vJK?xB(Cij5!f<GisoT50EKz|J=t<K>dsHSz7^XLN@-J#<S}91icAAE
zw8rS1Pw=yYeE%sH=}s?1l@(F)cyA+~)ZVcYMt@QG3nm0++2v^v7R>if+!6@p7zh>m
zZIrHsSiP^;2e)v$obpo(xF<G_LZafQ#{+SNe&8MBuo12njVuHO4$k!DT!xR7aYEb3
z&Z-=PG$Eu0@IW#0u?o*`g{$^|y=T{?Zad}jT20@(3vTq~le5<pcdz5}&S@?lz=-ec
zx<GYsYARSIPo<T9SmHaFgxS6ide6L31l4F7XfBTw-Cb*#RVBp*Ti`N5g{0>#{!U@y
z7tnQ_>|djUM6X;DWx6f<M&BpyBT}qU<n%!dE$jMzH(Z{tyn+I+ImGPep~1d(Z#wLC
zFVB2)VD&a<bow()?$S<Glydv2yC}OIuH#7}UHtmrM%(&dq62*mrNHr4MNE@0bVi%W
z9=&8YiuNmU&SO^ZYFT!YE1Bf5QFfBQ*#&Xl39y=3yl<p*gN#wq`3s<8UvIs}9zg^(
zI8fG-nWtxkiz)ik`Pw&CvYuUj8M}eCHcOCVE0IB3BlPAm-+uw{8!HI8Ep2J3pu?@o
z<jSj+Kr^eo6ly=9M~D*j9cP$vf&vOFd55@Yi~&6RD-TDxpz;6o(zDUAGbozo(ysDg
zVeP+LO~;|^j!CbDZj&wOT7H%0zXd+ggx}!ghxEQE%%d-&8`?${@zX}@Fp6Rt#*S_l
zK2l5@-RMc2upSpfyN;zI;TNuMse?YV-$vaU<#Tl0QfGsU3QSqu58%@80fock>ES<#
zjqC_@MABxN&%SS;4O9K^%y-UAK5A8*o;`B*lmv9+lw>|&Q)r%IWUYY)O4@^-rlh|;
z?VB95<BQh4i#r#`#eG;ztZ^Y2Gv#9~vNS=;1F1HaLMq14*vbnm_0h1ex0apt1Z1gr
z9lK`B3!7`eaUCykAsl^t(b@)U;Yw#cW*j4;B@}IPwQ7<^%vzUArU|pJu0L+BWl4+A
za}?w0I)!Z0uBo<SfjJNpe(rL(rc0TwJB9%GAPc9JxT{+z`{FTWt5(kCUg;G5k`Fo-
zmG#%San_bjm-fKG)u1iHon}zDF@IC{^`rd`xQd<=xOB-?#a&m-XTiD>@TKxnbJ9y>
zZ}F^y0P#>^Ucx1Ip8X$ikB05ynAHY6g<sr5H5}`td{f$w;Hkf$HXJ|-B@?%V$7;Q(
z+gl{bBV-+YMD+P>?0{>40#jtPhM()khDdgLjY!#k+*z#ipVcRoz0~4@*@KY*x0B$S
z&rC^c%f>q(rfecbL!*L?dqUnHaK=VnT^<!em^~IJ>J4GaDtF`fdxCL43Fu||gSUy4
z{V1}{L!z_~p1#Lot*^IT%ckrCan8tccX|N~@`nCEfZKWjIy30axTXZsVwAamzjLD-
zR%@hq)+=iz5A9PmkzX9J&&+sA=A{$Gg_a6zs#Nw?aEBVfn-|=fe@z%VJwPYDr-8}(
z)5J;GKeXaAkh3h=^QPR{J=9hL`n$*zhoeo(@spQiz*AF*!t-AeGFL9HyDw06<Ktvg
zcG6Xd1Iqd}`Z5nsd#vG{)7hI|4u4(sn`CA$Wiq^&jZg)uislChy5A*#DvP99W;7$^
z5jJI1f4g6%i-%ibil(SwM{J41ildd%4cJIgIm4eFH*3C5KLhoc?pl<bH`qCUJu30A
z%D2A{%krz)4D94gJ&NVpwJ0JH-#~P~`))&~jemNeeM80jwhl-C<rb|jZ#MIh`Z@B(
zluxCMPk@wzm?Opy*Mr%X4xN1qS%uBFz1-z~j-9pv$g+Amk)`|%2JDK5*3b8}fU@nO
zxv$oG0*eSewx*HQiHuT>qV7cW^g^9prJg*UB5-I%Np?zA*!ZK>Y%~ED-Gu{O8}rZB
zegPXWdIIkDvtRlv)#16o_chq7LM0TIyTyt|zDKMuHH2^Lgj1?5j+Qq&vO0GjBO@ng
z*N7Cf3WfdxLO4oJ2y5zpd6*d&@o5El%MS-Q9r5rjbWCXcUqvN8S#bX5HM+zZ*T5Pl
z1S;mNT-+X*h`$z0(&W|7b!&~qMuFQ2xcqV+O*b$?4w$4ka4qYLHV3NyGHiA=4I+b<
zXfk4<Z<3LDx-OssXXf#BcT&V_|5=XbA0!wFlAZ<LR+|LlLQEp~JVy^;EA<#?eru|`
zpILnfEdb@ZJGQUM^}wZfBjNX!<bv7L2lKkCx*ru<aaHk~t`&}s7f_`G3#?9+x)Z9h
z{gjJQYH_OFe8B7+Vhhr<g?-PV@aVc;o^`<&AkXq@`@Je(cB<s}mS=aQ11(1Hu;L9?
zJ1jmVI#G$yhalHTXR8xDew?Kp49oJ$k-j@LR-ijvL29bC)>Rtb4ewg#%D1f)>-Gc5
zfkXRb3$xN~R^*{D5d#pRJ6JC3c`i!q^_?!=YbeRBD-H!$)ILaOOXf{FTX^72UAcMB
z64NNB3aY$Y2ZY|-)d}!Yf$e^7bbZk_T#<goT~HV%V9Fss;9b7|E&X?HuJBb=(VzrI
zYqdDkR4nL^utrx*Ewz%adW%HN$ht`2Xqm+cTshU{5vT`CVNy$mh0o$jZu?Mvja+*C
z*kT&sK>^4Yd_G6f{u-5dE}%<$eezB*q9{)>NCSsL6mP$EH@z(DoJtPwiB3`JD20HH
zvy%Wg?W!;0%>o%z1^S}V@r;Z6lQJ0aTQpg|D#0*}Urd8e6o0Zhgn`wYAp@{>+&ap%
zh;F+2q<Yy_*U+LFjjJ;vrF<x$TTBPDPjJ2+8|MZn<g!`+ZX-qZP<de8y+*o#DHSTs
zAcCGD*i{VTRy;KmTPS*IcYdK26utZdkBD|RMF&U>&x`ORleVCFdf_6%n{AzL-en8(
zsg?Klp1=w8i6vt4=slqBW)qpiAuhSS+!tp7U*Ct>#VY!1MEE)`%*S8kyW2|Er8WB~
zLUBe<_mqYEdoFsa9y0<By43{<_-T=uPN{K=J}3O#a8K%g#{s`KoyHwvtBR`XiflAC
zK1<1kXU^$b)<)ngfAmFlMqW%b3uB&uxS7cm6Ft#rRXnVBr&3z?r)cwKs|?!PI$D*V
zqz8TfU7COqV>bT8^l9sHKheyL)qA_|{wp$k-6F#odiAbvxQZ?nXFjr|dJ(pA(XOz|
zSHCICFsmk-2i79P!$gx8Cp##VTbraK;Q0*&v}j~(Dd~P~f+wjD-S^>57R99vbAs6~
z72S*z4tCl(s<c&ky3Z&w=spp9ZFXf)Wy9K$n<v<o(oR*f>W{*d51)>^n^bmagh=@a
zoZa76<zQ`+juj*b_W16OAnTp^Fv}F3f2dUnN5~PJJ?LVfemV>V&heCm^%q0l@_^vQ
zW&@XxJFcvDD(Z^apa6Fdl}Q{fIS)bK*Vxbi3d@u_d$Dyk>4Cyd#>G@Q;*1XqQ-b^(
z=I%Bt*E{;=mAk+nO_#{(hdJg-@?-u(#PAk&?7XF82l?-tPQFZY8KE&=Ejy>Ql`xj-
zKAR><BMK7ZiBLQ;uG_yL7bCi~MZvUR&lU`w#kFh|-<1qJKLP(5$y^B&+q*dY%LUQ%
zUwOk4oI>&-iz!wsQQ5Dr38T%9DcOl1XYzlS4y+*~ax6U^9r)dZWh!+=vr-yzpv>Xh
zJb$Ty6f)8o_7wA=&zfe5ycP`I7*a&=&#tsriaca%5=~)b{m;Frpaj7T@A$sA10#Qg
zKj}|$ALfeRIKwgfF*gF)DGGaji8j|;6_1}x+$uIns%fJGg#2ITv-)EL*sW=@o=c4s
zZzUa15{<{`_q5}(=U{R>t0<Gv*6@^?l{Viuvz51x<}}5g`*08wnOVa4bi2g318jgB
z?t<$mVx|Ful27FUM)Z)Tgkx;xr$Qq+S@A6&RQZOM=Sq-h0{d0*G1j{MnjH9gj2)_z
zx>2$xOAnjAX+E3G8P}=T2h7YvR4Z|IOx)vEZ`0&@GnFh&Yo1QVUU#?}5}>ku=7y=F
z1a(oR`#SId+b{7R1r69f1QVS8Oj^Q2!9Mvwwv&j)KazC3v)|CpK>_uYQMnywJlj_|
z{h5X*SqIEc-q1b)ujoX3Y_YLIAtGo4ijfRFq|tph=NN(s;f~AumGNvF1Gd_YA5#g#
zyjK2J^)a*1+6#{POeGD~>a9q_<B*#dFsP80Qixm*DT`U+$f#;{X{>geD_GGt(Nx%c
zA~5D@-}f;rO*vO6Jo#p1!<^{`O9M<amJGILrL}Gyp^*ls%m$DGSH@Em_sLV`ZhOKO
zF2G0xeM(#?CwXob2k>f{C3*d`n^>#OoZGya^BNk$gaC`~m&-a^{4?kZ8*GXEV$=D3
z1LEmGs~NK|12FjQGg8WV3})XOT{4_n1L5W|OXS;9l>cORxZF%gVrnJxeMMK@`8kRx
z=UfG2go!oJtY$cIKR~TtYGLt0fARnJVg8GK=($+6C}`kp>PwF_p;#uluGmYh+&@K>
z)xRzFt0ld};PMA%wNHoTNZiv<&F5d3MSexz-Ay}m2eVPzwglVGo{c&y(U^HRv9#x!
z0o%L}<ran@C+*h$!reMsE-+nx?65-WK)w)vh-+P(d=M~TF4TY*R6m>nW~O-*Oh}p3
zIy6P*=^naCFs#6N)>@hO@t`@gO0&1|JI?W*-?bqvl<dm;Z)vwG3#Q5$_`{N`KZ}wK
z6JatZng0kz$L5UEvQPIbbJryp{Jy8UhsVY3`J*-&E*y)SpDi6iBp=g66epe}eGE;3
zrFf-CP8seRW#hEoPX-5Cq4Hf)B3{)b>)S8RZVky|Jn%?9)DOX)l1GOx31f3=XQfkC
z#e=v!h^ZRTqfOSBJ6UY#$he#U8vl)v+K9we%=V!LM0uLLbKoDj4f657YAf{{5i_JC
z;5plH(;*7!Wq)c2JnaW=`C^L010uFooF@5jCe7GZ9<*`YflWENq6p%y6X)_L9~BLP
zsuJL-`x)fsl=p>{LmT&?c3<pBe*f_oX20Hl)=K?1mcNy1dWa_>Z9BRcAL}W$3xf^j
zaaqod>(;7k%oK!tcGl|}&7}|J&2BBnlPKptC`Cy*1xxoVQ)zd<q1l|t;;PgS+&pVh
zcegs4KVMOR90|y4boT3$4f`J|E)Ipn#St}=nMYF8g~lcH1$9=TX=u`ngqH%i(5?ux
zj67zkT>C*(d2`|#pQ_bq)Kd%9{ZdA6jg5}o@Rq(q+yEj28Vp&2{$fGO<dXAh|41LG
zEGewj#XI#2@LeQ=q~4eNb*qD7^=j|MbXgecklgM$?e`zv`LM^2L8gVf#0d=8jCR78
zDKj3%oLsRk5#8dl_p9~Dh4gap^&)q6G|-GUxv0=7*F2@3T34%K#vO3xlnab+GX=&0
z<wf#R9Ni$%kQ0nNDecDJbG>GD#S&_EEEUgcUn(OW>1nc)fElo#EB9<hTnPjkeRX*W
zx6^J)w;<Ya{>(#~;M58~NYpf;(8@Qv>c^THO+=!rz0*J5W%~<}vaBZv4<r9A`z{`i
zv5U1f%kbCmKZ#A#|HSiSvstP9XsOCobkS)SQQA9<!)yQt`g!y!>`JWuAb?bjL3K+S
zV|1_E%<~!C&#aPrB!NH)A%NL=>m(i9%%5V4J18<vi(xp>K%*oL7f3tNxeJ-UQ_SMz
zukHWIm;LW-WbWO{rAm?g-|r7Q55m_QQcuog9{d?~^fA!!o;WeLi7=bkZp<nc(#ph8
z#Ec<eiQzepYc>_T7zl4(+t2y~qMPZ`(Pzt8AFrtNLeBb!bE6E33(FTFnzx~inpaob
zLaeq1?rvU>i~CnJO((}cj#+YolNvN9!Q#wQX8e_{yZoxca8)UuPX!xgDYjH;&l+0N
znp?ElQ<ONf+X5Bo<LdZbq6u4BYx;xAxNV;>RwubJO#Vk>Jjj(G!eb~eMwJn>RAbcg
zbE@^Bn__#k+&GEDL;%zCk)mxcG&WA>y!n%9g3Ovq^eEEaYVw=<SUBIM9pdMxm9|mw
zkHsfA6<5f#%OkrY^v=4^O3_WhJpRrXc_`2Qz~W4pSKdV~adL9cJ+sCBGCa5!8z`-q
z%0n8?7_!(omk{Da2o?jAr!;LA18<=H!q8{BwJ%ZOl=+$dq-);L?Qyc1125ZQ%oo2z
z`_$9D=(tVF<RmE9tc~G3#IAHhcvZ~udEfp5A|-qmnasHUG$8p})w221{rY3k2VuGG
z2FERzXr(y?g419^7uH?yP%)9ui1Ut#o=W~J{sJ3d`fRo+aG41{Yyj1pY3end$_l)3
z#JmBcz#GQB2Qj}2zPb7?&Hw1wiXH*EFmDp=38?8dtHPL<r9<D=vU1;SF#+PTQ>2L=
zqL$retW1<kwZ1~<N22|}K%6BK(-c*bQbsL4Da<d;)%L}hExiX!kH5h2#X57uxQ`Vm
zl1(5Vlt@^CbM13>a#VC=UCIe|Ub@+2X4Xm<_f0sv*Y<H1K&^@T8b7{?aK}=IM$i2;
z?mhr%X{>Nqj8UVC!VkE4ZsJHJ!F=y4ez_$G6#d1>h690zuB(;?#}lLi-)plgaP#Wg
ze#GeP<QVZnYOP}nRqG=n0|Qs6Ld<T%3u8m$wGyd1Bi*cQV~iQH0bWCi(9Y~wu4yfs
zoevIlnq}G6yG`%b^j%niB35psbYZ~*MFg{S8&o3y13N)^`qq>#HJipj!BLFC8i@gQ
z0vFxD&nssrTH@}SNg7QA$cqAqNJ&j;(K)a90t<(r!lCSyWBa#Zr6e$S+;a83Ab;~9
zy{6=7izH=hawRQCzy=7=aDRT@);+X{!0tTABsFn5!|Db|((4q5#kVUdw!8dV$Vj)Z
zxdqPSm_|ILsK%uw|91hy&66M)wuRNS(@6q!IPatLNan@T%|UTys*@2C6vxOW16S{a
ztA6&Tk)}kZS?HwBdB=qu`sd=}SDL70+;1f+;9kNCzfpp~w~T48JuLi~Ph_Ni%gOlu
zXt~BL)V0GV)YYZhxJ=1Mg5VB)^}7{!sjF$AJMNBZc5LEdH7#=wy!^K>84luNpXM#C
zF665NqqLBLmc;h<-Sni@vaVErk<x6Gq~g0@qJpB#MkapiZt-|(U7<C({{7Cyel^ms
z{mO*VuC8ZO+30XzzY?H<u&>@LP>PMJUPktstXifvv}9#bjeZ@Q3DUlO>seNZD@@ia
z6B<lIuzs@3D)VA6V`$NqS*It++CEe85R-^`bpAVHD=OLgHIEof$Hh<<-piJ?^ESiB
ze!d|yhF+sgZH;IJiwb6B_tgF$WKZKD<VBZ+75ct{8+JR^eL)8Fy!4oslft<$afG|s
zE*53FCCJ9U6M(lPsusa1tv>}-H=AXlXih=T;oyMjwqnT&Z*vPIR_`M8k5d^ZBCh^G
zkq@=7GtG+%W%5H4aO98C!cYy^FRyDJB4wdJTwPAy6jqDEtk0*n2?IXt1DY43H(?BJ
zl>X$5w&y3A!PGC8P(i!*yVUVlB9E%f@yhg(6-axIF;=ezL3YYMzgAsHmUqsJE{9l~
ztiIr%`Iw&3u!#(gXSPHIoo<u*3Omq;HU@8XBE1-135zTNnmxoZ-<J&kW4JVf*S8~=
zVDi`Mhzq!dBu;8wt<9J|o|{qYazy<HFWxCw4>)2>wc42w)=})pkvMZ-O`K+K<`!sM
z0bECYr;v+Gz8KC7Qupk|G|eC~jg|nO^`1}FH&M--7IuF@+j_Q)!d<1@S%E1cJSG+Q
zn*}?z(w`^2kQ1QLz+tr=YWLq|EtmK&=lH6XERQDLMKBaW+bZ**Y1Xr}OVmi}<TI*f
zec$x1!*fPHehX&O*nIH~T?>Avh)Hz1R@M(4pOH4WDy)UYz1rwaKlW<N#7axOmC1|+
zL-m@3<Zt%fYQ@BGEx?z)z>_307ft98OEcv$l`A+=owSySg$wO7B0$@VB#m$L+={F?
z1rk?IZyo(XSAPuBRb)x_UgcsiPEx*uSmjht@ovCk_jkntxbh5M(z<YAHfTl8*apnr
zRO*UUY3D98LV$1V(#nn9Ztl$M3%?f%8_xD<?br(D4hzgujrITcM(p3Q$p3!7^^Dc~
za^aW$@p4(fR9eW|#-cruQ)#k+*Li-d5Ljo2Oo+NX7suK;Ft?*AIAW}??_+#Lvs<SS
z9TXd|y@^|zvZ^R1gB<!|`sPN`SD7GioZ=$IVLZhwuCbMc7dUBGSC}#Ln00NBmZ|qN
zd}W-jEzVH{6au>4Ef!3ZUm!ePLH<}IJA0`}f_$zTY}?xT%|V?Y4fcFy&!3)P_1X_=
zKr5ZkYugOW?vouczX(z!9C0tvjOC0S_>}nfxc4T2^-#R_#|E5GB8P(@4;8xiS@^N=
z$DwaGrXy0In3!U-4`a;Ag17rih<bQuDSUQMn$-90Li&8#k?*`%YOwbzn{CuyT;7Z^
z6AS04GQh<-iF)wlfj!>b><kaboK|<5ZHM}gWk>;tgIv-}Eaaw-pK=@r(g2)2N<+!U
zYi4uY*;BPkEmDwQauhu|2lCVpSn5nCGT^gNC$q?*g2swpsm^?8lD~q>(q1!CxYqGS
zgjQa5H|t|vQSr<q_6+YMwN>7k!h0)ir~gV6rxjyr@MGutgE=Kv{2=7w`5r9x`U&>!
tkNJg`M(#K7DHBGscj>=-_+$w6X>e1&oBpQXY*)27e$@X6<?zMd{~s-2G!Os)

literal 0
HcmV?d00001

diff --git a/docs/re/structures/ui-button-focus-record.md b/docs/re/structures/ui-button-focus-record.md
index 81d3ef0..d838002 100644
--- a/docs/re/structures/ui-button-focus-record.md
+++ b/docs/re/structures/ui-button-focus-record.md
@@ -125,15 +125,67 @@ Positions are **absolute design-space top-left**, not offsets
 The offset is **uniform**: `(−42,−6)` for the ring and `(−7,−7)` for the label on
 every button, and identical in the Japanese bundle (pak entry 8).
 
-⚠️ **One 1-unit disagreement, and it is real.** `ptbtn04`'s parent element rests
-at y **401** while its own leaf says y **402** (and in the JP bundle the leaf says
-401 against a parent 401). So a leaf's placement **duplicates** the parent's
-rather than being relative to it, and the two copies are not always byte-equal.
-The parent's is what `compose` honours; treat the leaf's as the source only for
-elements the parent does not declare — which is exactly the ring's case.
+⚠️ **Which placement wins — and an earlier version of this page was misleading.**
+It said "the parent is what `compose` honours; treat the leaf's as the source only
+for elements the parent does not declare". That is right for a **base** record and
+wrong for an **`f`** record, because *the parent declares no element for
+`ptbtn0Nf.rat` at all* — checked, zero of build 5's 16 elements name it. So the
+`f` record's placement can only come from its own leaf, for **both** its elements,
+the bright label included.
 
-🟡 The ring carries **2 keyframes** where the label carries 1, so it animates.
-What it does between them is not decoded here.
+The `(−7,−7)` on the label is real and load-bearing: `ptbtn0Nf.t32` is 13 px
+larger in each axis than the base, and −7 keeps the two **concentric**
+(`535 + 96/2 = 583` against `542 + 83/2 = 583.5`). Drawing the `f` label at the
+base element's position would push it 7 px down-right.
+
+✅ **Checked against the oracle.** Differencing the `OPTIONS`-focused capture
+against the unfocused one, the changed region is x **505…703**, y **397…446**.
+The leaf predicts ink starting inside the ring's box at x ≥ 500 (measured 505, a
+5 px art inset) and the label's right edge near 707 (measured 703); the
+parent-position reading predicts 714. Both the right edge and the bottom edge
+favour the leaf by ~7 px. ⚠️ Ink-inset reasoning is soft — the decisive argument
+is the structural one above, that there is no parent element to inherit from.
+
+The one thing that *is* duplicated is the **base** record: `ptbtn04`'s parent
+element rests at y **401** while its own leaf says **402** (and in the JP bundle
+the leaf says 401 against a parent 401). For a base record the parent is what
+`compose` honours.
+
+## ✅ The ring SPINS — and the oracle confirms the game draws the rotation
+
+The ring's two keyframes differ in exactly one field:
+
+```text
+ptbtneff01.t32   kf0  t=120   pos=(500,156) scale=100%,100% a=255  rot=0
+                 kf1  t=None  pos=(500,156) scale=100%,100% a=255  rot=360
+```
+
+Position, scale, alpha and tint are all constant; only `rotation_deg` ramps,
+**0 → 360**. That is a spin in place — the same shape as the `GP_BUNK` example
+already recorded in [`ui-keyframe-rotation.md`](ui-keyframe-rotation.md).
+
+✅ **And it is actually rendered.** In the oracle's `OPTIONS`-focused frame the
+ring's bright head sits in a completely different angular position from the
+sprite's own — the game caught it mid-spin:
+[`focus-ring-oracle-vs-sprite.png`](../captures/ui-layout/focus-ring-oracle-vs-sprite.png)
+(left: the oracle at the ring's declared box; right: the sprite, unrotated).
+
+🔴 **Do not quote an angle from this.** A brightest-region centroid puts the
+displacement near 250°, but the **control refuses it**: rotating the sprite by a
+known 30/90/180/270° and re-measuring gives errors up to **19.8°**, so the
+estimator is not trustworthy at that precision. What survives is the part the
+error bar cannot touch — a ≤20° error cannot manufacture a ~250° displacement, so
+**the ring is drawn substantially rotated**, and the exact angle is one frame of a
+continuous spin and not a stable quantity anyway.
+
+⚠️ **This raises rotation's priority for a port.** It is not a title-only concern
+that sits off-screen at rest: the main menu's focus marker spins, so a renderer
+that ignores `rotation_deg` draws a static ring with its highlight in the wrong
+place, on the screen the player looks at most.
+
+🟡 The spin's **period** is not established. `t=120` is the first keyframe's time,
+and what the untimed second one means for a *leaf* — as opposed to a screen, where
+it is the ~0.4 s exit ramp — was not tested.
 
 ## ⚠️ `screen render --focus` is blind to the ring, and so was this page