SIMD Refactor: Merge simd-dev into dev (#55)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: aider (openrouter/anthropic/claude-sonnet-4) <aider@aider.chat>
Co-authored-by: Warp <agent@warp.dev>

.vscode/extensions.json

@@ -0,0 +1,10 @@
+{
+    "recommendations": [
+        "ms-dotnettools.csdevkit",
+        "ms-dotnettools.csharp",
+        "ms-dotnettools.dotnet-interactive-vscode",
+        "bierner.markdown-mermaid",
+        "visualstudioexptteam.vscodeintellicode",
+        "SonarSource.sonarlint-vscode"
+    ]
+}