feat: SelfImprove uses Deploy instead of Restart for code changes

Updated SelfImproveAsync prompt to direct the agent to call Aspire Deploy (which stops,
rebuilds, and starts fresh) rather than RestartResource when deploying code changes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: LeftTwixWand

src/Agents/Orchestration/ThreadAgent.cs

@@ -120,7 +120,7 @@ private async Task<string> SelfImproveAsync(string task, CancellationToken ct =
             - Use DotNet to build E:\IAW\IAW.slnx after writing code
             - If build fails, use FileSystem to fix the code and rebuild
             - Use Git to commit changes after a successful build
-            - Use Aspire to restart the assistant resource to deploy
+            - Use Aspire Deploy tool (not RestartResource) to deploy code changes — this stops, rebuilds, and starts fresh
             - Do NOT read traces unless debugging a specific runtime error
             - Write complete, compilable C# code — follow existing patterns in the codebase
             - For new agents: create an interface (IXxx.cs) and implementation (XxxAgent.cs) in src/Agents/