fix(build): correct devtools structure and module resolution

packages/devtools/package.json

@@ -3,12 +3,12 @@
   "version": "0.36.0-nightly.20260317.2f90b4653",
   "license": "Apache-2.0",
   "type": "module",
-  "main": "dist/src/index.js",
-  "types": "dist/src/index.d.ts",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "exports": {
     ".": {
-      "types": "./dist/src/index.d.ts",
-      "default": "./dist/src/index.js"
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
     }
   },
   "scripts": {

packages/devtools/tsconfig.build.json

@@ -1,7 +1,8 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
-    "outDir": "dist/src",
+    "outDir": "dist",
+    "rootDir": "src",
     "composite": true,
     "declaration": true,
     "sourceMap": true,