diff --git a/engine.spec b/engine.spec
index d95a31e..1133b37 100644
--- a/engine.spec
+++ b/engine.spec
@@ -48,14 +48,35 @@ datas += collect_data_files('librosa', includes=['**/*.pyi'])
 
 # scipy >= 1.18 tach scipy.stats thanh nhieu module con (vd
 # _ansari_swilk_statistics) import lazy ben trong ham -> hook scipy cua
-# PyInstaller miss -> ModuleNotFoundError luc runtime. Collect toan bo
-# submodules cua scipy de khong sot module nao (stats/signal/ndimage...).
-_scipy_hidden = collect_submodules('scipy')
+# PyInstaller miss -> ModuleNotFoundError luc runtime. Giai phap TRIET DE:
+# scan FILESYSTEM toan bo site-packages/scipy (khong import, khong walk —
+# pkgutil.walk_packages BO QUA AM THAM subpackage import loi luc build,
+# da gap: may user mat ca cay scipy.sparse.csgraph._shortest_path).
+# Bat moi module .py + C-extension .pyd/.so -> hiddenimports day du.
+import importlib.util as _ilu
+import glob as _glob
+_scipy_spec = _ilu.find_spec('scipy')
+_scipy_dir = _os.path.dirname(_os.path.abspath(_scipy_spec.origin))
+_scipy_hidden = []
+for _ext in ('*.py', '*.pyd', '*.so'):
+    for _f in _glob.glob(_os.path.join(_scipy_dir, '**', _ext), recursive=True):
+        _rel = _os.path.relpath(_f, _scipy_dir)
+        _base = _os.path.basename(_rel).split('.')[0]  # bo .cpython-312-x86_64... .so
+        _pkg = _os.path.dirname(_rel).replace(_os.sep, '.')
+        _mod = ('scipy.' + _pkg + '.' + _base) if _pkg else ('scipy.' + _base)
+        if _mod not in _scipy_hidden:
+            _scipy_hidden.append(_mod)
 # Cung co bang hiddenimport TINH: _morestats import module nay o top-level
 # (scipy 1.18+); collect_submodules du phong nhung neu miss (version khac
 # tren may user) thi dong nay van dam bao bundle co.
 if 'scipy.stats._ansari_swilk_statistics' not in _scipy_hidden:
     _scipy_hidden.append('scipy.stats._ansari_swilk_statistics')
+# scipy.sparse.csgraph cung lazy-import C-extension tu ben trong ham (vd
+# _shortest_path, _traversal, _matching) — hiddenimport tinh phong walk miss.
+for _m in ('scipy.sparse.csgraph._shortest_path', 'scipy.sparse.csgraph._traversal',
+           'scipy.sparse.csgraph._matching', 'scipy.sparse.csgraph._min_spanning_tree'):
+    if _m not in _scipy_hidden:
+        _scipy_hidden.append(_m)
 
 a = Analysis(
     ['desktop_engine.py'],