sec-surface phantoms: #48 wrap lit idx-254 art in live armor colors

Playtester report: (1) the CONTROL MODE stack showed filled boxes around the
inactive MID/ADV entries, (2) a phantom block between the HEADING dial and the
ARMOR rosette.  Root-caused [T1]:

  The #48 translation-table cycle-fill (6bb03ae, 2026-07-25) mapped
  out-of-range art indices in-plane as (index mod 2^bits) -- so art index 254
  landed on plane slot 62 = the LIVE colorMapperMultiArmor right-armor damage
  slot.  And idx-254 art EXISTS: every SMODE.PCC frame fills the INACTIVE
  mode-box interiors with 254, and BTSEC1.PCX carries a stray 52x13 idx-254
  bar at port (199-250,101-113) between the heading dial and the rosette (a
  scratch duplicate of the rosette quadrant bars).  Both lit up in the
  current right-armor color (adpal ramp green/orange/red) on EVERY render
  path.  On the shipped machine those regions rendered BLACK (the garbage
  entry's low plane bits were 0), which is why the 2026-07-19 smode audit --
  run before the cycle-fill landed -- verified CORRECT.

FIX (BuildSecondaryTranslation): map [2^bits..255] to translationTable[0]
  (plane BACKGROUND) -- the authentic on-screen result, same no-leak
  guarantee.  Verified on both desktop paths: MID/ADV back to authored
  borders+text (idx 5/9), no interior fills; the phantom bar gone; the BAS
  badge and the live armor rosette (in-range slots 60-63) untouched.

KB: gauges-hud #48 REFINED addendum; GAUGE_COMPOSITE audit row 33 corrected
  (binding is ControlsMapper/ControlMode, not DisplayMode) + re-verification
  note.

(The companion glass-token palette-generation fix lives on glass-panel-perf --
it depends on the dirty-skip code there.  The two branches touch disjoint
hunks and merge in either order.)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/GAUGE_COMPOSITE.md

@@ -696,7 +696,7 @@ reconfigure/externalConfigure); parse-skip list EMPTY ([gskip]=0), all 50 attr b
 | 30 | sec: schematic CRITICAL view (cmCrit) | subsystem simulationState/damage | LIVE this audit: N-cycle shows the full subsystem list (GEN A-D, LOOP 1-6, HUD, SENSORS, GYRO, TORSO, weapons) | T2 | CORRECT |
 | 31 | sec: schematic HEAT view (cmHeat) | subsystem currentTemperature tint | #6 pixel-verified; re-cycled this audit (mask 0x450421→0x490421→0x510421) | T2 | CORRECT |
 | 32 | sec: view cycling (N / pod 0x15) | CycleDisplayMode → vtbl+0x4C @4d1ae4 | #6 resolution re-verified live ([mode] display notify 0/1/2) | T2 | CORRECT |
-| 33 | sec: CONTROL MODE lamp (BAS/MID/ADV) | ControlsMapper/DisplayMode oneOfSeveralPixInt | attr wave incr.5; M-cycle verified #6 | T2 | CORRECT |
+| 33 | sec: CONTROL MODE lamp (BAS/MID/ADV) | ControlsMapper/**ControlMode** oneOfSeveralPixInt (row previously mislabeled DisplayMode — that is the sibling sdspmod) | attr wave incr.5; M-cycle verified #6. **2026-08-10:** this row's verification PREDATED the 07-25 #48 cycle-fill, which then lit the inactive box interiors (art idx 254 → live armor slot 62) — playtester-reported, re-fixed by mapping out-of-range indices to plane background (see context/gauges-hud.md §#48 REFINED); both render paths re-verified against the reference | T2 | CORRECT |
 | 34 | sec: duck / searchlight button lamps | duckState (ctor-zeroed only) / Searchlight LightOn | duckState writer missing (P3 leftover) | T3 | DEFERRED-FEED (duck); CORRECT (light attr published) |
 | 35 | sec: messageBoard ticker | StatusMessagePool (NULL stub) + kill ticker strip 0 | 7fc4acb; kill ticker live 2026-07-12, other strips unsurveyed | T2/T3 | DEFERRED-FEED (partial) |
 | 36 | MFD preset paging (J/K/L, pod RIO banks) | SetPresetMode table @0051dbf0 (little-endian re-decode) | #9; re-verified live this audit: cycles visit EXACTLY the populated set (MFD1: 1,2,4; MFD2: 1-4; MFD3: 1,2) | T2 | CORRECT |