# The two decoder eras, rendered: all 16 composable bundles of GP_TITLE.
# 2026-08-30.
#
# STALE era = origin/main  (ui_layout.rs: "Keyframe time, or None for the
#             group's last frame" -- a pose's time read from the NEXT record)
# FIXED era = formats-pin-2026-08-30 == this branch (a pose's time PRECEDES it)
#
# Both built from source; renders are `screen render --all --build N --primitives`.
#
# CONTROL 1 -- the two binaries really do embody the two eras:
#   stale  rest (0,0) t=70  [12:0,0 70:0,0 80:0,0 -:0,0]
#   fixed  rest (0,0) t=12  [0:0,0 12:0,0 70:0,0 80:0,0]     (build 5, pteff00.prm)
# CONTROL 2 -- the renderer is deterministic: same binary, same flags, twice,
#   entry 7 -> 0 differing px, entry 12 -> 0 differing px.

entry  what                    differing px     RMSE  max|d|
    0  loading                            0    0.000       0
    1  loading                            0    0.000       0
    2  plate                              0    0.000       0
    3  plate                              0    0.000       0
    4  title                              0    0.000       0
    5  main_menu                          0    0.000       0
    6  extras                             0    0.000       0
    7  title_jp                       74507   12.409     233  <-- DIFFERS
    8  main_menu_jp                       0    0.000       0
    9  extras_jp                          0    0.000       0
   10  splash publisher               32842    1.767      35  <-- DIFFERS
   11  splash developer               23201    0.942      31  <-- DIFFERS
   12  loading (dressed)              49771   10.078     229  <-- DIFFERS
   13  splash publisher twin          31708    1.782      35  <-- DIFFERS
   14  splash developer twin          23201    0.942      31  <-- DIFFERS
   15  loading twin                   49771   10.078     229  <-- DIFFERS

7 of 16 bundles differ between the eras; 16-7 are byte-identical.

# MECHANISM, entry 7 (title_jp): exactly ONE element's rest POSITION moves.
#   stale   8 ptlogo_eff3.t32 ... rest (108,72)
#   fixed   8 ptlogo_eff3.t32 ... rest  (98,42)
# ptlogo_eff3.t32 is the element MISSION.md and ui-resting-pose.md already
# name as THE plateau-less rest() discriminator. 74 507 px, RMSE 12.4.

# MECHANISM, entries 10-15: NO rest position changes at all. The rest
# SELECTION moves to a different keyframe which happens to sit at the same
# (x,y) with a different SCALE and ALPHA -- e.g. pgloading_delta.t32 holds
# (120,560) at 0%,0% a=0 / 75%,75% a=128 / 96%,96% a=192. Comparing the
# 'rest (x,y)' column alone says nothing changed; the pixels say otherwise.