feat(copycat): d5 slow-2x with fast-2 on ^58, d9 warm pad n8

d5: keep dope slow-2x base, ^58 now layers fast 2 (original NTO speed)
d9: 90s_synatm:8 (99.7% low, 0% hi — warm, not windy)

copycat/la_cle_des_champs.tidal

@@ -182,9 +182,9 @@ d4 $ gF2 $ gM3 -- BASS: V chord tones (F2/A2/C2), rhythmically alive
 d5 $ gF3 $ gM3 -- ARPEGGIO: 2-note 16th, evolves over sections (demucs guitar stem)
   -- demucs: F3/F4 base, Bb3/A3 mid-sections, Gb4 in Ebm, E4 at breakdown
   $ midiOn "^90" (stut 4 0.5 "e") -- push: stutter
-  $ midiOn "^58" (superimpose ( -- state: bloom octave shimmer + pan spread
-    (|+ note 12) . (|* gain 0.55) . (|+ pan 0.2) . (# room 0.5)
-  ))
+  $ midiOn "^58" ( -- state ON: 2x speed layer (the real NTO arp tempo!)
+     (fast 2 . (|* gain 0.8) . (|+ pan 0.15) . (# room 0.3))
+    )
   $ sometimesBy (1 - "^18") (mask "<t(11,16) t(13,16) t(14,16) t(15,16)>") -- breathes
   $ note ( -- 16-bar: Bb/F anchor, A3/C4 variations, Eb/Gb for Ebm (demucs)
     slow 2 $ "<[bf4 f4]*8 [bf4 f4]*8 [a3 f4]*8 [bf4 f4]*8 [a3 c4]*8 [bf4 f4]*8 [ef4 gf4]*8 [ef4 gf4]*8>"
@@ -207,13 +207,13 @@ d9 $ gF2 $ gM3 -- PAD: Warm evolving harmonic bed
       "[bf4,df5,f5]", "[f4,a4,c5]",
       "[df4,f4,af4]", "[ef4,gf4,bf4]"
     ])
-  # "90s_synatm:0"
+  # "90s_synatm:8" -- n8=pure warm low (99.7% low, 0% hi). Alt: n23(longer), n33(warm+long)
   # lpf (slow 32 $ range 1200 6000 saw) -- 32-bar: pad opens from warm to bright
   # room 0.6 # sz 0.8 # dry 0.9
   # legato 4
   # pan 0.4
   # cut 9
-  # gain (slow 32 $ range 0.7 1.0 saw) -- 32-bar: pad swells gently
+  # gain (slow 32 $ range 0.7 1.4 saw) -- 32-bar: pad swells gently
 d6 $ gF2 $ gM3 -- PIANO: Sustained Rhodes chords (demucs: Bb3/A3/F3, enters ~40s)
   -- ^31: modIndex sweep (more harmonics = more presence)
   $ note (