Fix more compiler warnings/errors

Directory.Build.props

@@ -5,6 +5,10 @@
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <Nullable>enable</Nullable>
   </PropertyGroup>
+  <PropertyGroup Label="Documentation">
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <NoWarn>$(NoWarn);CS1591</NoWarn>
+  </PropertyGroup>
   <ItemGroup Label="License">
     <None Include="$(MSBuildThisFileDirectory)osu-framework.licenseheader">
       <Link>osu-framework.licenseheader</Link>

osu.Framework.Templates/templates/template-empty/Directory.Build.props

@@ -3,4 +3,8 @@
   <PropertyGroup>
     <ApplicationManifest>$(MSBuildThisFileDirectory)app.manifest</ApplicationManifest>
   </PropertyGroup>
+  <PropertyGroup Label="Documentation">
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <NoWarn>$(NoWarn);CS1591</NoWarn>
+  </PropertyGroup>
 </Project>

osu.Framework.Templates/templates/template-flappy/Directory.Build.props

@@ -3,4 +3,8 @@
   <PropertyGroup>
     <ApplicationManifest>$(MSBuildThisFileDirectory)app.manifest</ApplicationManifest>
   </PropertyGroup>
+  <PropertyGroup Label="Documentation">
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <NoWarn>$(NoWarn);CS1591</NoWarn>
+  </PropertyGroup>
 </Project>

osu.Framework/Extensions/OSPlatformExtensions.cs

@@ -12,7 +12,7 @@ namespace osu.Framework.Extensions
     {
         /// <summary>
         /// Checks whether this <see cref="MemberInfo"/> is supported on the current runtime platform as specified by
-        /// <see cref="SupportedOSPlatformAttribute"/> and <see cref="UnsupportedOSPlatformAttribute"/>.
+        /// [SupportedOSPlatform] and [UnsupportedOSPlatform].
         /// </summary>
         /// <param name="member">The <see cref="MemberInfo"/> to check the attributes of.</param>
         /// <returns><c>true</c> if this <paramref name="member"/> is supported, false otherwise.</returns>
@@ -34,7 +34,7 @@ namespace osu.Framework.Extensions
         }
 
         /// <summary>
-        /// Returns whether the provided <see cref="OSPlatformAttribute"/> matches the current (runtime) platform.
+        /// Returns whether the provided [OSPlatformAttribute] matches the current (runtime) platform.
         /// </summary>
         /// <remarks>This is currently a naive check which doesn't support specific OS versions.</remarks>
         private static bool matchesCurrentPlatform(OSPlatformAttribute attribute)

osu.Framework/Graphics/Veldrid/Batches/VeldridVertexBatch.cs

@@ -19,7 +19,7 @@ namespace osu.Framework.Graphics.Veldrid.Batches
         /// Most documentation recommends that three buffers are used to avoid contention.
         ///
         /// We already have a triple buffer (see <see cref="GameHost.DrawRoots"/>) governing draw nodes.
-        /// In theory we could set this to two, but there's also a global usage of a vertex batch in <see cref="VeldridRenderer"/> (see <see cref="VeldridRenderer.DefaultQuadBatch"/>).
+        /// In theory we could set this to two, but there's also a global usage of a vertex batch in <see cref="VeldridRenderer"/> (see <see cref="Renderer.DefaultQuadBatch"/>).
         ///
         /// So this is for now an unfortunate memory overhead. Further work could be done to provide
         /// these in a way they were not created per draw-node, reducing buffer overhead from 9 to 3.

osu.Framework/Graphics/Veldrid/Shaders/VeldridShaderPart.cs

@@ -142,7 +142,7 @@ namespace osu.Framework.Graphics.Veldrid.Shaders
         }
 
         /// <summary>
-        /// Creates a <see cref="VeldridShaderPart"/> based off this shader with a list of attributes passed through as input & output.
+        /// Creates a <see cref="VeldridShaderPart"/> based off this shader with a list of attributes passed through as input &amp; output.
         /// Attributes from the list that are already defined in this shader will be ignored.
         /// </summary>
         /// <remarks>
@@ -154,7 +154,7 @@ namespace osu.Framework.Graphics.Veldrid.Shaders
         /// This creates a new <see cref="VeldridShaderPart"/> rather than altering this existing instance since this is cached at a <see cref="IShaderStore"/> level and should remain immutable.
         /// </para>
         /// </remarks>
-        /// <param name="attributes">The list of attributes to include in the shader as input & output.</param>
+        /// <param name="attributes">The list of attributes to include in the shader as input &amp; output.</param>
         public VeldridShaderPart WithPassthroughInput(IReadOnlyList<VeldridShaderAttribute> attributes)
         {
             string result = code;

osu.Framework/Utils/PathApproximator.cs

@@ -308,7 +308,7 @@ namespace osu.Framework.Utils
         /// <param name="learningRate">The rate of optimization. Larger values converge faster but can be unstable.</param>
         /// <param name="b1">The B1 parameter for the Adam optimizer. Between 0 and 1.</param>
         /// <param name="b2">The B2 parameter for the Adam optimizer. Between 0 and 1.</param>
-        /// <param name="initialControlPoints">The initial bezier control points to use before optimization. The length of this list should be equal to <see cref="numControlPoints"/>.</param>
+        /// <param name="initialControlPoints">The initial bezier control points to use before optimization. The length of this list should be equal to <paramref name="numControlPoints"/>.</param>
         /// <param name="learnableMask">Mask determining which control point positions are fixed and cannot be changed by the optimiser.</param>
         /// <returns>A List of vectors representing the bezier control points.</returns>
         public static List<Vector2> PiecewiseLinearToBezier(ReadOnlySpan<Vector2> inputPath,
@@ -337,7 +337,7 @@ namespace osu.Framework.Utils
         /// <param name="learningRate">The rate of optimization. Larger values converge faster but can be unstable.</param>
         /// <param name="b1">The B1 parameter for the Adam optimizer. Between 0 and 1.</param>
         /// <param name="b2">The B2 parameter for the Adam optimizer. Between 0 and 1.</param>
-        /// <param name="initialControlPoints">The initial B-spline control points to use before optimization. The length of this list should be equal to <see cref="numControlPoints"/>.</param>
+        /// <param name="initialControlPoints">The initial B-spline control points to use before optimization. The length of this list should be equal to <paramref name="numControlPoints"/>.</param>
         /// <param name="learnableMask">Mask determining which control point positions are fixed and cannot be changed by the optimiser.</param>
         /// <returns>A List of vectors representing the B-spline control points.</returns>
         public static List<Vector2> PiecewiseLinearToBSpline(ReadOnlySpan<Vector2> inputPath,