Fix ImagePipeline operation rendering

Update MaskOperation to store mask dimensions for reconstruction.
Implement proper operation rendering in ImagePipeline:
- Apply mask+inpaint operations with proper mask reconstruction
- Handle adjustment operations by type (brightness/contrast/saturation)
- Scale masks when rendering previews at reduced resolution

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CheapRetouch/Features/Editor/EditorViewModel.swift

@@ -172,14 +172,20 @@ final class EditorViewModel {
 
             // Add operation to project
             if var project = project {
-                let maskData = MaskData(from: mask)?.data ?? Data()
-                let maskOp = MaskOperation(toolType: toolTypeForCurrentTool(), maskData: maskData)
+                if let maskDataObj = MaskData(from: mask) {
+                    let maskOp = MaskOperation(
+                        toolType: toolTypeForCurrentTool(),
+                        maskData: maskDataObj.data,
+                        maskWidth: maskDataObj.width,
+                        maskHeight: maskDataObj.height
+                    )
                     let inpaintOp = InpaintOperation(maskOperationId: maskOp.id, featherAmount: Float(featherAmount))
 
                     project.addOperation(.mask(maskOp))
                     project.addOperation(.inpaint(inpaintOp))
                     self.project = project
                 }
+            }
         } catch {
             errorMessage = error.localizedDescription
         }

CheapRetouch/Models/EditOperation.swift

@@ -24,12 +24,16 @@ struct MaskOperation: Codable, Identifiable {
     let id: UUID
     let toolType: ToolType
     let maskData: Data
+    let maskWidth: Int
+    let maskHeight: Int
     let timestamp: Date
 
-    init(id: UUID = UUID(), toolType: ToolType, maskData: Data, timestamp: Date = Date()) {
+    init(id: UUID = UUID(), toolType: ToolType, maskData: Data, maskWidth: Int, maskHeight: Int, timestamp: Date = Date()) {
         self.id = id
         self.toolType = toolType
         self.maskData = maskData
+        self.maskWidth = maskWidth
+        self.maskHeight = maskHeight
         self.timestamp = timestamp
     }
 }

CheapRetouch/Utilities/ImagePipeline.swift

@@ -13,6 +13,7 @@ import UIKit
 actor ImagePipeline {
 
     private let context: CIContext
+    private let inpaintEngine = InpaintEngine()
 
     init() {
         self.context = CIContext(options: [
@@ -29,12 +30,17 @@ actor ImagePipeline {
         // Scale down for preview if needed
         var image = originalImage
 
+        let scaleFactor: CGFloat
         if image.width > maxSize || image.height > maxSize {
-            let scale = CGFloat(maxSize) / CGFloat(max(image.width, image.height))
-            image = try scaleImage(image, scale: scale)
+            scaleFactor = CGFloat(maxSize) / CGFloat(max(image.width, image.height))
+            image = try scaleImage(image, scale: scaleFactor)
+        } else {
+            scaleFactor = 1.0
         }
 
-        // Apply operations (placeholder for now)
+        // Apply operations
+        image = try await applyOperations(operations, to: image, scaleFactor: scaleFactor)
+
         return image
     }
 
@@ -43,7 +49,68 @@ actor ImagePipeline {
         operations: [EditOperation]
     ) async throws -> CGImage {
         // Apply operations at full resolution
-        return originalImage
+        var image = originalImage
+        image = try await applyOperations(operations, to: image, scaleFactor: 1.0)
+        return image
+    }
+
+    private func applyOperations(
+        _ operations: [EditOperation],
+        to image: CGImage,
+        scaleFactor: CGFloat
+    ) async throws -> CGImage {
+        var currentImage = image
+
+        // Group mask and inpaint operations
+        var pendingMask: MaskOperation?
+
+        for operation in operations {
+            switch operation {
+            case .mask(let maskOp):
+                pendingMask = maskOp
+
+            case .inpaint:
+                if let maskOp = pendingMask {
+                    let maskData = MaskData(
+                        width: maskOp.maskWidth,
+                        height: maskOp.maskHeight,
+                        data: maskOp.maskData
+                    )
+                    if let mask = maskData.toCGImage() {
+                        // Scale mask if needed
+                        let scaledMask: CGImage
+                        if scaleFactor != 1.0 {
+                            scaledMask = try scaleImage(mask, scale: scaleFactor)
+                        } else {
+                            scaledMask = mask
+                        }
+
+                        // Apply inpainting
+                        currentImage = try await inpaintEngine.inpaint(
+                            image: currentImage,
+                            mask: scaledMask
+                        )
+                    }
+                }
+                pendingMask = nil
+
+            case .adjustment(let adjustment):
+                currentImage = applyAdjustment(adjustment, to: currentImage) ?? currentImage
+            }
+        }
+
+        return currentImage
+    }
+
+    private func applyAdjustment(_ adjustment: AdjustmentOperation, to image: CGImage) -> CGImage? {
+        switch adjustment.type {
+        case .brightness:
+            return applyColorAdjustment(to: image, brightness: adjustment.value)
+        case .contrast:
+            return applyColorAdjustment(to: image, contrast: adjustment.value)
+        case .saturation:
+            return applyColorAdjustment(to: image, saturation: adjustment.value)
+        }
     }
 
     func applyColorAdjustment(