Fix CI build: lower deployment target and disable code signing

- Lower MACOSX_DEPLOYMENT_TARGET from 15.7 to 15.0 (CI runner max is 15.2)
- Disable code signing in build.sh for unsigned CI builds

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: davut

Wirdi/Wirdi.xcodeproj/project.pbxproj

@@ -180,7 +180,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 15.7;
+				MACOSX_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -239,7 +239,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 15.7;
+				MACOSX_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SDKROOT = macosx;

Wirdi/build.sh

@@ -27,6 +27,9 @@ xcodebuild archive \
   ONLY_ACTIVE_ARCH=NO \
   SKIP_INSTALL=NO \
   BUILD_LIBRARY_FOR_DISTRIBUTION=YES \
+  CODE_SIGN_IDENTITY="-" \
+  CODE_SIGNING_REQUIRED=NO \
+  CODE_SIGNING_ALLOWED=NO \
   -quiet
 
 echo "🔨 Building for Intel (x86_64)…"
@@ -40,6 +43,9 @@ xcodebuild archive \
   ONLY_ACTIVE_ARCH=NO \
   SKIP_INSTALL=NO \
   BUILD_LIBRARY_FOR_DISTRIBUTION=YES \
+  CODE_SIGN_IDENTITY="-" \
+  CODE_SIGNING_REQUIRED=NO \
+  CODE_SIGNING_ALLOWED=NO \
   -quiet
 
 ARM_APP="$ARCHIVE_ARM/Products/Applications/$APP_NAME"