Add PyInstaller hooks for pytz, lap, and PIL.ImageGrab runtime imports

[Copilot]

PyInstaller builds failed at runtime with ModuleNotFoundError for pytz, lap, and PIL.ImageGrab. These packages require explicit collection of timezone data, compiled C extensions, and platform-specific modules respectively.

Changes

Created PyInstaller hooks (hooks/ directory):

• hook-pytz.py - Collects timezone database files via collect_data_files()
• hook-lap.py - Collects compiled extensions via collect_dynamic_libs()
• hook-PIL.py - Collects all PIL submodules including ImageGrab

Updated build configuration:

# CV_Studio.spec and build_exe.py
from PyInstaller.utils.hooks import collect_data_files, collect_dynamic_libs

datas += collect_data_files('pytz')
datas += collect_data_files('PIL')

binaries = []
binaries += collect_dynamic_libs('lap')

a = Analysis(
    ...
    hookspath=['hooks'],
    ...
)

Added test script test_critical_imports.py to verify import resolution before build.

Documentation: English and French guides in FIX_EXE_IMPORTS_*.md with troubleshooting.

Affected Components

• node.ActionNode.node_mongodb (pytz)
• node.TrackerNode.mot.bytetrack.tracker.matching (lap)
• node.VideoNode.node_screen_capture (PIL.ImageGrab)

Original prompt

quand j'execute le .exe, apres le buil j'ai un probleme d'import de pytz qui ne marche pas, lap no trouvé et imagegrab qui pose soucis. vérifie ça stp et fixe comme un pro

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