Revert "fix: replace bash postinstall with Node.js for Windows compatibility"

This reverts commit a6d9dee.

Author: elrrrrrrr

vendor/scripts/npm-utoo.sh

@@ -28,19 +28,20 @@ cat "$ENTRY_DIR/package.json" | \
         print;
     }' > "$ENTRY_DIR/package.json.tmp" && mv "$ENTRY_DIR/package.json.tmp" "$ENTRY_DIR/package.json"
 
-# copy postinstall script (Node.js for cross-platform compatibility)
-cp ../templates/postinstall.js.template "$ENTRY_DIR/postinstall.js"
+# do copy postinstall.sh
+cp ../templates/postinstall.utoo.sh.template "$ENTRY_DIR/postinstall.sh"
+chmod +x "$ENTRY_DIR/postinstall.sh"
 
 # copy README.md from repository root
 cp ../../README.md "$ENTRY_DIR/README.md"
 
 # create placeholder binaries
 mkdir -p "$ENTRY_DIR/bin"
 for binary in utoo ut; do
-    # Unix version (use /bin/sh for portability)
+    # Unix version
     cat > "$ENTRY_DIR/bin/$binary" << 'EOF'
-#!/bin/sh
-echo "This is a placeholder binary. The actual binary will be installed via postinstall script."
+#!/bin/bash
+echo "This is a placeholder binary for $binary. The actual binary will be installed via postinstall script."
 exit 1
 EOF
     chmod +x "$ENTRY_DIR/bin/$binary"
@@ -55,7 +56,7 @@ done
 
 # create utx shell script that executes utoo x
 cat > "$ENTRY_DIR/bin/utx" << 'EOF'
-#!/bin/sh
+#!/bin/bash
 utoo x "$@"
 EOF
 chmod +x "$ENTRY_DIR/bin/utx"

vendor/templates/postinstall.js.template

@@ -21,6 +21,6 @@
   "os": ["darwin", "linux", "win32"],
   "cpu": ["x64", "arm64"],
   "scripts": {
-    "postinstall": "node ./postinstall.js"
+    "postinstall": "bash ./postinstall.sh"
   }
 }