added a way to bundle the whole app

package-lock.json

@@ -7,13 +7,14 @@
     "": {
       "name": "difftool",
       "version": "0.1.0",
+      "hasInstallScript": true,
       "dependencies": {
-        "@pierre/diffs": "^1.2.7",
-        "@pierre/trees": "^1.0.0-beta.4",
-        "express": "^5.1.0"
+        "@pierre/diffs": "1.2.7",
+        "express": "5.2.1"
       },
       "devDependencies": {
-        "esbuild": "^0.28.0"
+        "@pierre/trees": "1.0.0-beta.4",
+        "esbuild": "0.28.0"
       }
     },
     "node_modules/@esbuild/aix-ppc64": {
@@ -489,6 +490,7 @@
       "version": "1.0.0-beta.4",
       "resolved": "https://registry.npmjs.org/@pierre/trees/-/trees-1.0.0-beta.4.tgz",
       "integrity": "sha512-OfT1yk9ne8Te5+GB5zUY8yqE6B8BqjBHQJleH4lu8ltwNpoocZl4vXt1AzlEExpxI/pp+AFX5QG+lR3JjtTEag==",
+      "dev": true,
       "license": "apache-2.0",
       "dependencies": {
         "preact": "11.0.0-beta.0",
@@ -1460,6 +1462,7 @@
       "version": "11.0.0-beta.0",
       "resolved": "https://registry.npmjs.org/preact/-/preact-11.0.0-beta.0.tgz",
       "integrity": "sha512-IcODoASASYwJ9kxz7+MJeiJhvLriwSb4y4mHIyxdgaRZp6kPUud7xytrk/6GZw8U3y6EFJaRb5wi9SrEK+8+lg==",
+      "dev": true,
       "license": "MIT",
       "funding": {
         "type": "opencollective",
@@ -1470,6 +1473,7 @@
       "version": "6.6.5",
       "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-6.6.5.tgz",
       "integrity": "sha512-O6MHzYNIKYaiSX3bOw0gGZfEbOmlIDtDfWwN1JJdc/T3ihzRT6tGGSEWE088dWrEDGa1u7101q+6fzQnO9XCPA==",
+      "dev": true,
       "license": "MIT",
       "peerDependencies": {
         "preact": ">=10 || >= 11.0.0-0"