AEP import: Lumetri Color's master RGB curve, Hue vs Sat and colour wheels

After Effects 2026 presets made by hand (1200 lumetri-58 ... -62) decode
the data the scripted samples could not set.

- RGB curve (-0039): the first of the four curves is the master curve
  and arrives as curves/rgbCurves/master. A moved red, green or blue
  curve is reported: no sample tells which slot is which channel.
- Hue vs Sat (-0042): y is the offset from neutral, 1 doubling the
  saturation (in linear light), so EffectCraft's y is 0.5 + y / 2. The
  other four hue / saturation curves stay reported when moved.
- Color Wheels (-0047): four triples of hue (degrees), brightness slider
  (0.5 neutral) and distance. Shadows, Midtones and Highlights become
  EffectCraft's wheel colours (HSL of that hue, saturation = distance,
  lightness 0.5); the brightness sliders and the fourth wheel are
  reported.
- Damaged curve or wheel data is reported as damaged.
- Legacy Tone And Saturation is reported when a record says on: its pard
  default turns from off to on when the project is saved again (the
  25.x / 24.x / 26 copies of 1200), so comparing with it missed it.
- The Input LUT and Look presets confirm -0095 / -0096 hold the names;
  the LUT files are After Effects' own and are not embedded.

Evidence: the 62 read-backs still equal the imported values in the new
63-composition 1200 file. The version copies store the same Lumetri
definitions, ranges and values and give the same report. Renders: master
curve within 0.024 (After Effects uses a natural spline, EffectCraft's
Lumetri a monotone one), Hue vs Sat mean 0.008, wheels mean 0.042.

Part of #3111

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/aep-format.md

@@ -534,9 +534,10 @@ suffix is a parameter id, not the `parT` position (Curves -0002 Channel before -
 -0005 Quality before -0004). API: `CurvesData`, `MeshData`, `curve_lut`. [V; details: corpus FORMAT
 S]
 
-**Lumetri Color** (`ADBE Lumetri`, 1200: 58 compositions made by script in After Effects 2026, 32 bpc,
-working space None; defaults, all set, one per section, valid minima and maxima, every popup item the
-script can set, checkboxes toggled, keys, an expression): 131 `parT` entries. The `-NNNN` suffix is a
+**Lumetri Color** (`ADBE Lumetri`, 1200: 63 compositions in After Effects 2026, 32 bpc, working space
+None; by script: defaults, all set, one per section, valid minima and maxima, every popup item the script
+can set, checkboxes toggled, keys, an expression; from presets made by hand, `-58` ... `-62`: an Input
+LUT, a Look, the RGB curve, Hue vs Sat, the colour wheels): 131 `parT` entries. The `-NNNN` suffix is a
 parameter id, not the position (`-0127` ... `-0130` sit between `-0005` and `-0026`), so the importer
 keys by suffix. Float sliders (type 10) store the value After Effects shows; the valid ranges (`pard`
 104 / 108) are wider than the slider's (112 / 116): Temperature / Tint -300..300 (slider -100..100),
@@ -546,31 +547,50 @@ HDR Range 100..10000, Refine Blur 0..1000 (0..30), Vignette Amount -5..5 (-3..3)
 `-19-min` / `-20-max` equal the stored numbers. **Hidden controls are recorded in the default state**
 (`tdsb` 3) and still hold the value After Effects reads back: High Dynamic Range `-0062` (1.0),
 HDR Specular `-0064` (22), the second Look popup `-0128` (26.16 as set, read back 26), Legacy Tone And
-Saturation `-0097`, Auto Color `-0124`, Face Detection `-0102`, the Auto Intensity `-0123`
+Saturation `-0097` (its `pard` default reads off as the script saved the project and on once the
+project was opened and saved again, `versions/1200-lumetri-26`, `-25x`, `-24x`; a fresh instance reads
+back off), Auto Color `-0124`, Face Detection `-0102`, the Auto Intensity `-0123`
 (`EffectParam::recorded_value`). Each section has an Active checkbox (blank `pard` name; `-0003` Basic
 Correction, `-0023` Creative, `-0037` Curves, `-0118` RGB Curves, `-0104` / `-0105` / `-0107` / `-0109` /
 `-0111` the hue / saturation curves, `-0046` Color Wheels, `-0068` HSL Secondary, `-0050` Vignette, on
 by default); off, the section does nothing (`-03-sec-basic-correction`, `-17-sec-vignette` render as
 `-00-defaults`). Arbitrary data (type 11, a record and `aRbs` in every instance; empty is `fe fe`):
 `-0001` an XML copy of the grade written only when the Look changes (not kept current: `-01-set-all`
-holds defaults for controls set after the Look); `-0096` the Look's name, UTF-16LE (`SL BLUE ICE`; the
-popup `-0025` itself has no record, `-0128` can disagree with it: `-07-sec-creative` names item 20
-while `-0128` holds 23), `-0095` likewise for the Input LUT (H, by analogy: no sample sets a LUT);
-`-0129` the Look colour space's 16-byte id (the GUID `LookColorSpace` of `-0001`, byte-swapped; zero
-for None; the Color Space popup `-0130` writes no record of its own, `-22-pop38-1` ... `-53-pop38-33`);
+holds defaults for controls set after the Look; it names the LUT file, `Fuji F125 Kodak 2393 (by
+Adobe).cube`); `-0096` the Look's name, UTF-16LE (`SL BLUE ICE`, `Fuji F125 Kodak 2393 (by Adobe)` in
+`-59-preset-look-lut`; the popup `-0025` itself has no record, `-0128` can disagree with it:
+`-07-sec-creative` names item 20 while `-0128` holds 23), `-0095` likewise for the Input LUT
+(`ALEXA_Default_LogC2Rec709`, `-58-preset-input-lut`; the popups `-0005` / `-0127` keep no record,
+`-0004`, `-0024` and the assets `-0125` / `-0126` stay `fe fe`: the LUTs are After Effects' own files,
+named, not embedded); `-0129` the Look colour space's 16-byte id (the GUID `LookColorSpace` of `-0001`
+in Windows layout: the first 4, 2 and 2 bytes little-endian; zero for None; the Color Space popup
+`-0130` writes no record of its own, `-22-pop38-1` ... `-53-pop38-33`);
 `-0032` Split Toning (32 zero bytes); `-0039` the four RGB curves and `-0042`, `-0106`, `-0108`,
 `-0110`, `-0112` the hue / saturation curves, 520 bytes each: `i32` type (3 for the hue curves, 2 for
 Luma vs Sat and Sat vs Sat, 0 for an RGB curve), `u32` point count, then little-endian `f64` pairs x, y
-(RGB: (0, 0), (1, 1) by default; hue / saturation: no points, and the selector colours `-0113` ...
-`-0117` add three points at y = 0, the hue picked +- 0.0556; no sample moves a point, so y's scale is
-H); `-0047` Color Wheels (4 x `f64` triples, 0, 0.5, 0 each) and `-0085` the HSL correction wheels (8
-triples, the same); `-0073` the HSL key, 40 bytes: a flag byte (1 once a colour was picked), then hue,
+sorted by x (bytes after the counted points are stale). RGB: x and y 0..1, (0, 0), (1, 1) by default;
+the first of the four is the master curve (`-60-preset-curves-rgb`: (0.491, 0.787) lifts R, G and B
+alike, and the render follows a natural cubic spline through the points within 0.003); the order of
+the other three is H (the `-0001` XML names `ToneCurvesLuma`, `Red`, `Green`, `Blue`; no sample moves
+one). Hue / saturation: x the hue (0 red, 1/3 green) or the luma / saturation 0..1, y the offset from
+neutral 0; a fresh curve has no points, the selector colours `-0113` ... `-0117` add three at y = 0,
+the hue picked +- 0.0556. Hue vs Sat's y scales the saturation by 1 + y in linear light
+(`-61-preset-curves-huesat`: (0.0155, 0.97) takes pure red's linear saturation to 1.96 times, (0.263,
+-0.03) and (0.765, -0.02) green, cyan and blue to 0.97); the other four curves' scale is H. `-0047`
+Color Wheels, 4 `f64` triples: hue in degrees (0 red, 120 green), brightness slider 0..1 (0.5
+neutral), distance from the centre 0..1; 0, 0.5, 0 each by default; Shadows, Midtones, Highlights, then
+a fourth wheel of unknown role (`-62-preset-wheels`: Shadows 229.1, 0.370, 0.547 towards blue with the
+slider down; Midtones 0.1, 0.5, 0.395 towards red; Highlights 93.4, 0.727, 0.319 towards yellow-green
+with the slider up; the fourth at its default); `-0085` the HSL correction wheels (8 triples, the same
+default; layout H); `-0073` the HSL key, 40 bytes: a flag byte (1 once a colour was picked), then hue,
 saturation, lightness, each centre, range, tolerance (`f32` LE, fractions) and an enabled byte (fresh:
 0.5, 0, 0, on; picking RGB 0.02 0.55 0.85 gives hue centre 0.5605 = that colour's hue and lightness
 centre 0.435 = its HSL lightness, range 0.05, tolerance 0.1: `-01-set-all`; whether range is the half
-or full width is H); `-0122` the Auto Tone analysis (UTF-16 JSON). Curves, LUTs and wheels are not
-scriptable: the presets for them are still to be made. [V for the sliders, checkboxes, popups and the
-`tdsb` 3 values; H where marked]
+or full width is H); `-0122` the Auto Tone analysis (UTF-16 JSON). The project saved as 25.x and 24.x
+copies (`versions/1200-lumetri-25x`, `-24x`: the 58 scripted compositions, saved by After Effects
+2026) stores every Lumetri definition, valid range and value as the 26 save does. [V for the sliders,
+checkboxes, popups, the `tdsb` 3 values, the master RGB curve, Hue vs Sat, the colour wheels and the
+LUT names; H where marked]
 
 ### 3.8 Masks and bezier paths (`tdgp[ADBE Mask Parade]`)