ci(ci): fix windows node.js path propagation in workflow

- Add debug output to print PATH and verify node availability
- Set explicit bash shell for test step cross-platform consistency
- Update node.js path setup to use GITHUB_PATH environment file

Author: NeaByteLab

.github/workflows/ci.yaml

@@ -39,7 +39,7 @@ jobs:
           $nodePath = (Get-Command node).Source
           $nodeDir = Split-Path -Parent $nodePath
           echo "$nodeDir" | Out-File -FilePath $env:GITHUB_PATH -Append
-          echo "Added to PATH: $nodeDir"
+          echo "Added to GITHUB_PATH: $nodeDir"
           node --version
 
       - name: Format check
@@ -53,4 +53,8 @@ jobs:
         run: deno check src/index.ts
 
       - name: Test
-        run: deno test --allow-read --allow-env --allow-run
+        shell: bash
+        run: |
+          echo "PATH: $PATH"
+          which node || echo "node not in PATH"
+          deno test --allow-read --allow-env --allow-run