fix(ios/spm): link FronteggSwift into the app target so the binary resolves its symbols

Under use_frameworks! :static, FronteggRN builds as a static framework and does
not embed FronteggSwift's objects, so the application binary linked with
unresolved FronteggSwift.* symbols (undefined symbols for arm64). frontegg_spm.rb
previously *removed* the app-target SPM link assuming FronteggRN provides it;
instead link the FronteggSwift SPM product directly into the application target
(packageProductDependencies + Frameworks build file), located generically via the
product-type.application target. Idempotent; result is plutil-lint valid.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: dianaKhortiuk-frontegg

ios/frontegg_spm.rb

@@ -14,6 +14,7 @@ module FronteggSPM
   FRONTEGG_RN_FRAMEWORKS_PHASE_ID = '46EB2E000076A0'
   SPM_TARGET_DEP_ID = '7A1B2C3D4E5F6000100140001'
   SPM_FRAMEWORK_BUILD_ID = '7A1B2C3D4E5F6000100140002'
+  APP_SPM_FRAMEWORK_BUILD_ID = '7A1B2C3D4E5F6000100140003'
 
   module_function
 
@@ -24,7 +25,7 @@ def link_frontegg_rn_pod(installer)
     patch_app_pods_xcconfigs(installer.sandbox.root)
 
     app_pbxproj = user_app_pbxproj_path(installer)
-    dedupe_app_frontegg_spm_link(app_pbxproj) if app_pbxproj
+    link_frontegg_spm_into_app(app_pbxproj) if app_pbxproj
   end
 
   def user_app_pbxproj_path(installer)
@@ -53,26 +54,34 @@ def patch_app_pods_xcconfigs(pods_root)
     end
   end
 
-  # App Swift files import FronteggSwift but must not link it (FronteggRN already does).
-  # Keep package resolution on the app project; drop target-level package products only.
-  def dedupe_app_frontegg_spm_link(app_pbxproj_path)
+  # The app's Swift files (and the FronteggRN pod) reference FronteggSwift symbols, so the
+  # application binary must LINK the FronteggSwift SPM product. Under use_frameworks! :static,
+  # FronteggRN builds as a static framework and does NOT embed FronteggSwift's objects, so the
+  # link has to live on the application target itself — otherwise the final link fails with
+  # "Undefined symbols for architecture arm64: ... FronteggSwift.*".
+  def link_frontegg_spm_into_app(app_pbxproj_path)
     return unless File.exist?(app_pbxproj_path)
 
     content = File.read(app_pbxproj_path)
     content = content.sub(%r{^// FRONTEGG_SPM_DEDUPED_MARKER\n}, '')
 
-    content = content.gsub(
-      /\n\t\t\tpackageProductDependencies = \(\n\t\t\t\t#{PRODUCT_DEP_ID} \/\* #{PRODUCT_NAME} \*\/,\n\t\t\t\);/,
-      ''
-    )
+    content = ensure_app_package_reference(content)
+    content = add_app_target_product_dependency(content)
+    content = add_app_target_framework_build_file(content)
 
-    unless content.include?('XCRemoteSwiftPackageReference "frontegg-ios-swift.git"')
-      content = content.sub(
-        /(mainGroup = [A-F0-9]+;\n)(\t\t\tproductRefGroup)/,
-        "\\1\t\t\tpackageReferences = (\n\t\t\t\t#{PACKAGE_REF_ID} /* XCRemoteSwiftPackageReference \"frontegg-ios-swift.git\" */,\n\t\t\t);\n\t\t\t\\2"
-      )
+    File.write(app_pbxproj_path, content)
+  end
+
+  # Project-level Swift package resolution (XCRemoteSwiftPackageReference + product dependency).
+  def ensure_app_package_reference(content)
+    return content if content.include?('XCRemoteSwiftPackageReference "frontegg-ios-swift.git"')
 
-      package_sections = <<~PBX
+    content = content.sub(
+      /(mainGroup = [A-F0-9]+;\n)(\t\t\tproductRefGroup)/,
+      "\\1\t\t\tpackageReferences = (\n\t\t\t\t#{PACKAGE_REF_ID} /* XCRemoteSwiftPackageReference \"frontegg-ios-swift.git\" */,\n\t\t\t);\n\t\t\t\\2"
+    )
+
+    package_sections = <<~PBX
 
       /* Begin XCRemoteSwiftPackageReference section */
       \t\t#{PACKAGE_REF_ID} /* XCRemoteSwiftPackageReference "frontegg-ios-swift.git" */ = {
@@ -92,12 +101,49 @@ def dedupe_app_frontegg_spm_link(app_pbxproj_path)
       \t\t\tproductName = #{PRODUCT_NAME};
       \t\t};
       /* End XCSwiftPackageProductDependency section */
-      PBX
+    PBX
 
-      content.sub!(/\n\t\};\n\trootObject = /, "#{package_sections}\n\t};\n\trootObject = ")
-    end
+    content.sub(/\n\t\};\n\trootObject = /, "#{package_sections}\n\t};\n\trootObject = ")
+  end
 
-    File.write(app_pbxproj_path, content)
+  # Attach the FronteggSwift product to the application target so Xcode links it into the app binary.
+  def add_app_target_product_dependency(content)
+    return content if content.match?(
+      /packageProductDependencies = \(\n\t\t\t\t#{PRODUCT_DEP_ID} \/\* #{PRODUCT_NAME} \*\/,\n\t\t\t\);\n\t\t\tproductType = "com\.apple\.product-type\.application";/
+    )
+
+    content.sub(
+      /(\n\t\t\tproductReference = [A-F0-9]+ \/\* [^*]+\.app \*\/;\n)(\t\t\tproductType = "com\.apple\.product-type\.application";)/,
+      "\\1\t\t\tpackageProductDependencies = (\n\t\t\t\t#{PRODUCT_DEP_ID} /* #{PRODUCT_NAME} */,\n\t\t\t);\n\\2"
+    )
+  end
+
+  # Add FronteggSwift to the application target's Frameworks (link binary) build phase.
+  def add_app_target_framework_build_file(content)
+    return content if content.include?("#{APP_SPM_FRAMEWORK_BUILD_ID} /* #{PRODUCT_NAME} in Frameworks */")
+
+    phase_id = application_target_frameworks_phase_id(content)
+    return content unless phase_id
+
+    build_file = "\t\t#{APP_SPM_FRAMEWORK_BUILD_ID} /* #{PRODUCT_NAME} in Frameworks */ = {isa = PBXBuildFile; productRef = #{PRODUCT_DEP_ID} /* #{PRODUCT_NAME} */; };\n"
+    content = content.sub('/* Begin PBXBuildFile section */', "/* Begin PBXBuildFile section */\n#{build_file}")
+
+    content.sub(
+      /(#{Regexp.escape(phase_id)} \/\* Frameworks \*\/ = \{[\s\S]*?files = \(\n)/m,
+      "\\1\t\t\t\t#{APP_SPM_FRAMEWORK_BUILD_ID} /* #{PRODUCT_NAME} in Frameworks */,\n"
+    )
+  end
+
+  # The id of the Frameworks (link binary) build phase that belongs to the application target.
+  def application_target_frameworks_phase_id(content)
+    content.scan(/\t\t[A-F0-9]+ \/\* [^*]+ \*\/ = \{\n\t\t\tisa = PBXNativeTarget;[\s\S]*?\n\t\t\};/) do |block|
+      next unless block.include?('productType = "com.apple.product-type.application";')
+      phases = block[/buildPhases = \(\n([\s\S]*?)\t\t\t\);/, 1]
+      next unless phases
+      fid = phases[/([A-F0-9]+) \/\* Frameworks \*\//, 1]
+      return fid if fid
+    end
+    nil
   end
 
   def patch_frontegg_rn_xcconfigs(pods_root)