adding node versions consistency

Author: MarkoVcode

.github/workflows/release-electron.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '18'
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -143,7 +143,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '18'
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -230,7 +230,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '18'
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -316,7 +316,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '18'
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -414,7 +414,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '18'
 
       - name: Install Node dependencies
         run: npm install

.nvmrc

@@ -0,0 +1 @@
+18

CLAUDE.md

@@ -428,6 +428,24 @@ Driver should accept `transport: SerialTransport` in constructor and use it for
 - `API_PORT`: FastAPI port (default: `57666`)
 - `UI_PORT`: Frontend dev server port (default: `52893`)
 
+## Node.js Version Requirements
+
+**IMPORTANT**: BenchMesh requires **Node.js v18** for Electron packaging to ensure compatibility with electron-builder and Electron v28.
+
+### For Local Development
+
+The repository includes `.nvmrc` files that specify Node.js v18. If you use `nvm`, run:
+
+```bash
+nvm use
+```
+
+This will automatically switch to the correct Node.js version.
+
+### For CI/CD
+
+The GitHub Actions workflow (`.github/workflows/release-electron.yml`) is configured to use Node.js v18 for all Electron builds across Linux, Windows, and macOS platforms.
+
 ## Notes
 
 - Repository root contains example RS232 test scripts in `system/` directory

electron/.nvmrc

@@ -0,0 +1 @@
+18