1.9.0: rebuild WASM against iccDEV master; iccviz accuracy + safety

Rebuilds all WASM modules against clean iccDEV master (3c656146) and ships
the iccviz work landed since 1.8.2:

- GamutVolume accuracy rework: all cube facets sampled (CMYK/N>=4 boundary
  no longer under-captured) and a matched cube-dilate / 26-neighbour-erode
  closing (removes the ~9% convex-corner over-estimate). Reported gamut
  volumes drop accordingly at the default resolution — e.g. sRGB A2B1 at
  voxelSize=2.0 goes 805728 -> ~735816 dE*ab^3. This is the accuracy fix,
  not a regression.
- New degenerate-gamut warning surfaced in the Analysis panel (⚠ + message)
  when a gamut boundary collapsed or was mostly non-finite.
- L* tone-reversal analysis removed (Analysis tab + iccviz).
- Untrusted-input hardening of GamutVolume/RoundTripDE, and reuse of
  IccProfLib icLabtoXYZ for the neutral-axis path.

Version bumped in package.json + package-lock.json (lock had drifted to
1.8.1). WASM copied into frontend/public/wasm/ with refreshed SHA256SUMS.

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

Author: colourbill-ctrl

frontend/package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "profiletool-frontend",
-  "version": "1.8.2",
+  "version": "1.9.0",
   "description": "ICC profile viewer and validation UI",
   "type": "module",
   "scripts": {

frontend/package.json

@@ -1,10 +1,10 @@
 a736befd8cd60a99afd97aef068ec8f85efdea5fb6249bfa37ca17a165944117  iccprofiledump.mjs
-4975814340ec05ae29906a722dcc9b4a08e4d6d9cc658352a434bccdfc9350d8  iccprofiledump.wasm
-d6b0919a877752239e8c1d41e4178d2ce86e9cd91fcef296ec123b1e5cc3cc60  iccxml.mjs
-2e6a4f352aed56dc11e7bf6ac0ad1fce73f808b50e2a4e6387e9b23eb47bdad4  iccxml.wasm
+a9f0ddd1f18365a356f9e75ad3d1bcddb5312130b41b776e18f325801422b1a9  iccprofiledump.wasm
+11f1b3fc1168a09b4de47cb3703f60413bc8abc99591c7390420b8c1fec53070  iccxml.mjs
+d833f7f0a238f75ff242a88e20d270e8386df0896d1ebde2046801a1033be6e7  iccxml.wasm
 4d857c0b6d153955c5fa9b1fc0a0223fd87a8cc1705542824068a9bfb57edc1b  iccjson.mjs
-0d96dbde0cff98bd26008aa94921e8431662fffe36fbc054a14dc4685f7d1ad1  iccjson.wasm
-09f504562b590fbae0551cb4cf648a4b718f1b77ed361d158c49b18967661e73  iccplot.mjs
-a6f2b4522597e837218dcd03a6997362d28bfb9cbe71ed3797a00264cd463a84  iccplot.wasm
+7abe289b587a2c8cc2cc4efb0f20d63750a62bf137999d00b42f83a112933ac7  iccjson.wasm
+fb1b7a2a760f32266312dfe4f66fa39f08e9b898b07295514b5e05215c0a6fef  iccplot.mjs
+98aa067890222a2faf8ee2730ac6e60bf432ae703cf37b6d73b70018f9d577c6  iccplot.wasm
 7d047143ca8e6dcc7fdda2ef66950d8fea1c0d4ca6ace78d1c5c915800ee763c  iccpawg.mjs
-5ece18caf2a5aa41a0c9fcf2908a378c7604af03ecce7f5262bb7a1b976ce0b6  iccpawg.wasm
+f15a3a769212d82ef140dbfe67ac7d2270f3df2e515d94e42d37115ccec42a93  iccpawg.wasm