feat: add VSCode launch configuration and enhance debug API handler

.vscode/launch.json

@@ -0,0 +1,39 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Next.js: debug server-side",
+      "type": "node-terminal",
+      "request": "launch",
+      "command": "pnpm run dev",
+      "cwd": "${workspaceFolder}/projects/app"
+    },
+    {
+      "name": "Next.js: debug client-side",
+      "type": "chrome",
+      "request": "launch",
+      "url": "http://localhost:3000"
+    },
+    {
+      "name": "Next.js: debug client-side (Edge)",
+      "type": "msedge",
+      "request": "launch",
+      "url": "http://localhost:3000"
+    },
+    {
+      "name": "Next.js: debug full stack",
+      "type": "node-terminal",
+      "request": "launch",
+      "command": "pnpm run dev",
+      "cwd": "${workspaceFolder}/projects/app",
+      "skipFiles": ["<node_internals>/**"],
+      "serverReadyAction": {
+        "action": "debugWithEdge",
+        "killOnServerStop": true,
+        "pattern": "- Local:.+(https?://.+)",
+        "uriFormat": "%s",
+        "webRoot": "${workspaceFolder}/projects/app"
+      }
+    }
+  ]
+}