Implement core project structure and foundation components

Project Setup (Spec 01):
- Configure iOS 17.0 deployment target
- Add photo library usage descriptions
- Create proper folder structure (App, Features, Services, Models, Utilities)

Data Model (Spec 02):
- Add EditOperation enum with mask, inpaint, adjustment cases
- Add MaskOperation, InpaintOperation structs (Codable)
- Add Project model with operation stack and undo/redo support
- Add MaskData with dilation support via vImage

Services (Specs 03-05):
- Add InpaintEngine with Metal + Accelerate fallback
- Add MaskingService wrapping Vision framework
- Add ContourService for wire/line detection and scoring

UI Components (Specs 06-08):
- Add PhotoEditorView with photo picker integration
- Add CanvasView with pinch-to-zoom and pan gestures
- Add ToolbarView with tool selection and inspector panel

Utilities:
- Add ImagePipeline for preview/export rendering
- Add EdgeRefinement for smart brush edge detection
- Add check_build.sh for CI verification

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

check_build.sh

@@ -0,0 +1,26 @@
+#!/bin/zsh
+set -o pipefail  # Fail if xcodebuild fails, even with xcbeautify
+
+# --- Configuration ---
+SCHEME="CheapRetouch"
+BUILD_PATH="./build"
+
+echo "🔍 Checking compilation for $SCHEME..."
+
+# Build Only (No Install/Launch)
+# We use 'env -u' to hide Homebrew variables
+# We use '-derivedDataPath' to keep it isolated
+env -u CC -u CXX -u LIBCLANG_PATH xcodebuild \
+  -scheme "$SCHEME" \
+  -destination "platform=iOS Simulator,name=iPhone 17 Pro" \
+  -configuration Debug \
+  -derivedDataPath "$BUILD_PATH" \
+  build | xcbeautify
+
+# Check exit code of the pipeline
+if [ $? -eq 0 ]; then
+    echo "✅ Build Succeeded. No errors found."
+else
+    echo "❌ Build Failed."
+    exit 1
+fi