fix: stop hot-spinning PumpAsync on partial residual frames; release 0.2.4

After TryReadFrame slices a frame off the buffer, the residual at
[buffer.Start, buffer.End) has already been examined — TryReadFrame
walked it to decide 'not enough yet'. Setting examined=buffer.Start
makes the pipe return synchronously with the same bytes on the next
ReadAsync, hot-spinning CPU until more data arrives.

Matches Microsoft's documented Pipelines pattern (consumed=buffer.Start,
examined=buffer.End). Bumps NuGet tool and plugin to 0.2.4.

Author: unsafePtr

.claude-plugin/marketplace.json

@@ -1,13 +1,13 @@
 {
   "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
   "name": "claude-roslyn-lsp",
-  "version": "0.2.3",
+  "version": "0.2.4",
   "description": "Roslyn LSP for Claude Code with solution/open injection",
   "owner": { "name": "unsafePtr" },
   "plugins": [
     {
       "name": "roslyn-lsp",
-      "version": "0.2.3",
+      "version": "0.2.4",
       "source": "./roslyn-lsp",
       "category": "development",
       "tags": ["csharp", "dotnet", "lsp", "roslyn"],

roslyn-lsp/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "roslyn-lsp",
-  "version": "0.2.3",
+  "version": "0.2.4",
   "description": "Solution-aware Microsoft Roslyn LSP via ClaudeCodeRoslynLspProxy",
   "author": { "name": "unsafePtr", "url": "https://github.com/unsafePtr" },
   "homepage": "https://github.com/unsafePtr/ClaudeCodeRoslynLspProxy",

src/ClaudeCodeRoslynLspProxy/ClaudeCodeRoslynLspProxy.csproj

@@ -15,7 +15,7 @@
     <PackAsTool>true</PackAsTool>
     <ToolCommandName>ClaudeCodeRoslynLspProxy</ToolCommandName>
     <PackageId>ClaudeCodeRoslynLspProxy</PackageId>
-    <Version>0.2.3</Version>
+    <Version>0.2.4</Version>
     <Authors>unsafePtr</Authors>
     <Description>Thin LSP proxy that injects Roslyn's solution/open notification so Microsoft.CodeAnalysis.LanguageServer works as a solution-aware C# language server inside Claude Code.</Description>
     <PackageTags>claude-code;lsp;roslyn;csharp;dotnet;language-server</PackageTags>

src/ClaudeCodeRoslynLspProxy/Program.cs

@@ -247,8 +247,12 @@ internal static async Task PumpAsync(Stream source, Stream sink, bool isClientTo
                             }
                         }
 
+                        // `examined` stays at buffer.End: TryReadFrame walked the whole
+                        // residual to decide "not enough yet", so we've examined to End.
+                        // Setting examined < buffer.End would make ReadAsync return
+                        // synchronously with the same bytes and hot-spin until more data.
                         consumed = buffer.Start;
-                        examined = buffer.Start;
+                        examined = buffer.End;
                     }
 
                     if (result.IsCompleted)