feat: SOTA sharpening tool with 3 methods and 7 presets (#56)

* feat(sharpening): add SharpenAdvancedOptions type for multi-method sharpening

* feat(sharpening): implement 3-method sharpen engine (adaptive, USM, high-pass)

* feat(sharpening): add dedicated API route with Zod validation

* feat(sharpening): register tool in constants, i18n, and suggested tools

* feat(sharpening): add settings UI with presets, methods, and advanced controls

* feat(sharpening): register tool in frontend registry with before-after display

---------

Co-authored-by: stirling-image <stirling-image@users.noreply.github.com>

apps/web/src/lib/suggested-tools.ts

@@ -14,6 +14,7 @@ const TOOL_SUGGESTIONS: Record<string, string[]> = {
   "watermark-text": ["compress", "convert"],
   "watermark-image": ["compress", "convert"],
   "text-overlay": ["compress", "convert"],
+  sharpening: ["adjust-colors", "compress", "convert", "resize"],
   border: ["compress", "convert", "resize"],
 };
 

apps/web/src/lib/tool-registry.tsx

@@ -96,6 +96,11 @@ const EditMetadataSettings = lazy(() =>
 const ColorSettings = lazy(() =>
   import("@/components/tools/color-settings").then((m) => ({ default: m.ColorSettings })),
 );
+const SharpeningSettings = lazy(() =>
+  import("@/components/tools/sharpening-settings").then((m) => ({
+    default: m.SharpeningSettings,
+  })),
+);
 const WatermarkTextSettings = lazy(() =>
   import("@/components/tools/watermark-text-settings").then((m) => ({
     default: m.WatermarkTextSettings,
@@ -293,6 +298,9 @@ export const toolRegistry = new Map<string, ToolRegistryEntry>([
     },
   ],
 
+  // Sharpening
+  ["sharpening", { displayMode: "before-after", Settings: SharpeningSettings }],
+
   // Watermark & Overlay
   ["watermark-text", { displayMode: "before-after", Settings: WatermarkTextSettings }],
   ["watermark-image", { displayMode: "before-after", Settings: WatermarkImageSettings }],