From bdcfb6647c93b423eb4033e02a9bf746bd4406c1 Mon Sep 17 00:00:00 2001
From: SnapOtter <snapotter.hq@gmail.com>
Date: Sat, 9 May 2026 11:26:49 +0800
Subject: [PATCH] fix: sync frontend preset multipliers and fix sharpen type
 error

Add clahe and normalise entries to frontend PRESET_MULTIPLIERS to match
backend. Fix SharpenOptions to use m1 (not flat) per Sharp 0.34 types.
---
 .../components/tools/image-enhancement-settings.tsx  | 12 ++++++++++++
 packages/image-engine/src/operations/auto-enhance.ts |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/apps/web/src/components/tools/image-enhancement-settings.tsx b/apps/web/src/components/tools/image-enhancement-settings.tsx
index 5bc57c89..3a643765 100644
--- a/apps/web/src/components/tools/image-enhancement-settings.tsx
+++ b/apps/web/src/components/tools/image-enhancement-settings.tsx
@@ -57,6 +57,8 @@ const PRESET_MULTIPLIERS: Record<EnhancementMode, Record<string, number>> = {
     saturation: 1.0,
     sharpness: 1.0,
     denoise: 1.0,
+    clahe: 1.0,
+    normalise: 1.0,
   },
   portrait: {
     brightness: 0.8,
@@ -65,6 +67,8 @@ const PRESET_MULTIPLIERS: Record<EnhancementMode, Record<string, number>> = {
     saturation: 0.6,
     sharpness: 0.5,
     denoise: 1.5,
+    clahe: 0.7,
+    normalise: 0.8,
   },
   landscape: {
     brightness: 1.0,
@@ -73,6 +77,8 @@ const PRESET_MULTIPLIERS: Record<EnhancementMode, Record<string, number>> = {
     saturation: 1.4,
     sharpness: 1.5,
     denoise: 0.5,
+    clahe: 1.3,
+    normalise: 1.2,
   },
   "low-light": {
     brightness: 1.8,
@@ -81,6 +87,8 @@ const PRESET_MULTIPLIERS: Record<EnhancementMode, Record<string, number>> = {
     saturation: 0.8,
     sharpness: 1.2,
     denoise: 2.0,
+    clahe: 1.5,
+    normalise: 1.5,
   },
   food: {
     brightness: 0.8,
@@ -89,6 +97,8 @@ const PRESET_MULTIPLIERS: Record<EnhancementMode, Record<string, number>> = {
     saturation: 1.3,
     sharpness: 1.2,
     denoise: 0.5,
+    clahe: 1.1,
+    normalise: 1.0,
   },
   document: {
     brightness: 1.5,
@@ -97,6 +107,8 @@ const PRESET_MULTIPLIERS: Record<EnhancementMode, Record<string, number>> = {
     saturation: 0.0,
     sharpness: 2.0,
     denoise: 2.0,
+    clahe: 2.0,
+    normalise: 1.5,
   },
 };
 
diff --git a/packages/image-engine/src/operations/auto-enhance.ts b/packages/image-engine/src/operations/auto-enhance.ts
index d1cde91a..a58ad520 100644
--- a/packages/image-engine/src/operations/auto-enhance.ts
+++ b/packages/image-engine/src/operations/auto-enhance.ts
@@ -280,7 +280,7 @@ export function applyCorrections(
     const adj = corrections.sharpness * presets.sharpness * scale;
     if (adj > 2) {
       const sigma = 0.5 + (adj / 100) * 4;
-      result = result.sharpen({ sigma, flat: 1.0 });
+      result = result.sharpen({ sigma, m1: 1.0 });
     }
   }