Fix trimming issues

Author: TechieGuy12

src/Configuration/Watches.cs

@@ -10,6 +10,13 @@ namespace TE.FileWatcher.Configuration
     [XmlRoot("watches")]
     public class Watches : HasVariablesBase
     {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Watches"/> class.
+        /// </summary>
+        public Watches()
+        {
+        }
+
         /// <summary>
         /// Gets or sets the logging information.
         /// </summary>

src/FileWatcher.csproj

@@ -12,13 +12,19 @@
     <!-- Self-contained deployment optimization -->
     <PublishSingleFile>true</PublishSingleFile>
     <SelfContained>true</SelfContained>
-    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
 
     <!-- Trimming configuration for smaller size -->
     <PublishTrimmed>true</PublishTrimmed>
     <TrimMode>link</TrimMode>
     <EnableTrimAnalyzer>true</EnableTrimAnalyzer>
 
+    <!-- Suppress trim warnings from System.CommandLine beta package -->
+    <!-- IL2104: Assembly produces trim warnings -->
+    <NoWarn>$(NoWarn);IL2104</NoWarn>
+    
+    <!-- Preserve XML serialization members -->
+    <TrimmerRemoveSymbols>false</TrimmerRemoveSymbols>
+    
     <!-- Optimize for size over speed -->
     <PublishReadyToRun>false</PublishReadyToRun>
     <IncludeNativeLibrariesForSelfExtract>true</IncludeNativeLibrariesForSelfExtract>
@@ -38,6 +44,11 @@
     <PackageId>TE.FileWatcher</PackageId>
   </PropertyGroup>
 
+  <!-- Apply RuntimeIdentifier only during publish to avoid test project architecture mismatch -->
+  <PropertyGroup Condition="'$(IsPublishing)' == 'true'">
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
+  </PropertyGroup>
+
   <ItemGroup>
     <None Include="..\README.md">
       <Pack>True</Pack>
@@ -62,4 +73,11 @@
     </None>
   </ItemGroup>
 
+  <ItemGroup>
+    <!-- Preserve XML Serialization types from trimming -->
+    <TrimmerRootAssembly Include="fw" />
+    <!-- Preserve System.CommandLine types from trimming -->
+    <TrimmerRootAssembly Include="System.CommandLine" />
+  </ItemGroup>
+
 </Project>

tests/IO/PatternMatcherTests.cs

@@ -34,7 +34,7 @@ public void StrictMatchPattern_WithVariousPatterns_ShouldMatchCorrectly(
         [InlineData(null, "file.txt")]
         [InlineData("*.txt", null)]
         public void StrictMatchPattern_WithEmptyOrNullInputs_ShouldReturnFalse(
-            string pattern, string filename)
+            string? pattern, string? filename)
         {
             // Act
             var result = PatternMatcher.StrictMatchPattern(pattern, filename);