Update TODO status, add CAD files and pictures, move USB port to COM18

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.vscode/extensions.json

@@ -1,5 +1,11 @@
 {
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
     "recommendations": [
         "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack",
+        "pioarduino.pioarduino-ide"
     ]
 }