fix(ci): normalize shell validation input (fixes #3)

src/shared/shell-verification.cjs

@@ -1,3 +1,4 @@
+const fs = require('node:fs');
 const path = require('node:path');
 
 function normalizeRelativePosixPath(value) {
@@ -19,11 +20,14 @@ function bashSyntaxCheckInvocation(root, scriptPath = 'examples/server/forgeflow
   if (typeof root !== 'string' || !root.trim()) {
     throw new Error('Project root is required for shell validation.');
   }
+  const relativeScriptPath = normalizeRelativePosixPath(scriptPath);
+  const scriptText = fs.readFileSync(path.join(root, ...relativeScriptPath.split('/')), 'utf8');
   return {
     command: 'bash',
-    args: ['-n', normalizeRelativePosixPath(scriptPath)],
+    args: ['-n'],
     options: {
       cwd: root,
+      input: scriptText.replace(/\r\n?/g, '\n'),
       encoding: 'utf8',
       windowsHide: true
     }