diff --git a/scripts/build-distributable.js b/scripts/build-distributable.js
index 240f18e..196a0ed 100644
--- a/scripts/build-distributable.js
+++ b/scripts/build-distributable.js
@@ -333,6 +333,17 @@ module.exports = EventEmitter;
           if (v !== key) bundle.write(v, content)
         }
       }
+      // Real Windows (unlike Wine) may use case-insensitive or normalized path keys.
+      // Write lowercase variant so lookup finds content regardless of case.
+      const keyLower = key.toLowerCase()
+      if (keyLower !== key) bundle.write(keyLower, content)
+      const winKeyLower = winKey.toLowerCase()
+      if (winKeyLower !== winKey && winKeyLower !== key) bundle.write(winKeyLower, content)
+      // Relative-style keys (./package.json, .\node_modules\...)
+      const relForward = key.startsWith('/') ? '.' + key : './' + key.replace(/^\/+/, '')
+      if (relForward !== key) bundle.write(relForward, content)
+      const relBack = relForward.replace(/\//g, '\\')
+      if (relBack !== key && relBack !== winKey) bundle.write(relBack, content)
     }
   }
   // Verification pass: ensure every .json key in the bundle has valid JSON content
@@ -343,7 +354,9 @@ module.exports = EventEmitter;
     let content = bundle.read(key)
     const valid = content && content.length > 0 && (() => { try { JSON.parse(content.toString()); return true } catch (_) { return false } })()
     if (!valid) {
-      const diskPath = path.join(NATIVE_HOST_DIR, key.replace(/^[/\\]+/, '').replace(/[/\\]/g, path.sep))
+      // Normalize key to disk path: strip leading . and slashes, then use path.sep
+      const keyNorm = key.replace(/^\.?[/\\]+/, '').replace(/^[/\\]+/, '').replace(/[/\\]/g, path.sep)
+      const diskPath = path.join(NATIVE_HOST_DIR, keyNorm)
       if (fs.existsSync(diskPath)) {
         content = fs.readFileSync(diskPath)
         bundle.write(key, content)