Fix blurry UI on Windows high-DPI displays

[Copilot]

Tkinter applications on Windows appear blurry on high-DPI displays (150%/200% scaling) because Windows applies bitmap scaling to DPI-unaware applications.

Changes

• Runtime DPI awareness: Added enable_dpi_awareness() in __main__.py called before Tk initialization

  • Tries SetProcessDpiAwarenessContext(PER_MONITOR_AWARE_V2) (Win10 1703+)
  • Falls back to SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE) (Win8.1+)
  • Falls back to SetProcessDPIAware() (Vista+)

• Build-time manifest: Created wow_sync.manifest declaring dpiAwareness: PerMonitorV2 for PyInstaller executable

• Build configuration: Updated build.py to embed manifest on Windows builds via --manifest flag

def enable_dpi_awareness():
    """Enable DPI awareness on Windows to prevent blurry UI."""
    if sys.platform == 'win32':
        try:
            import ctypes
            DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 = ctypes.c_void_p(-4)
            PROCESS_PER_MONITOR_DPI_AWARE = 2
            
            try:
                ctypes.windll.user32.SetProcessDpiAwarenessContext(
                    DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2
                )
            except (AttributeError, OSError):
                # ... fallback chain

Windows-only changes. No impact on macOS/Linux.

Original prompt

can we improve the dpi scaling on windows, its kind of blurry

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[Copilot]

Pull request overview

This PR fixes blurry UI rendering on Windows high-DPI displays (150%/200% scaling) by implementing DPI awareness at both runtime and build time. The solution uses a defense-in-depth approach: runtime code handles execution from source, while the manifest handles built executables.

Key Changes:

• Added runtime DPI awareness detection with fallback chain supporting Windows Vista through Windows 10 1703+
• Created application manifest declaring PerMonitorV2 DPI awareness for built executables
• Integrated manifest embedding into the Windows build process via PyInstaller

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
wow_sync/main.py	Adds enable_dpi_awareness() function with cascading fallbacks for DPI awareness APIs, called before Tk initialization
wow_sync.manifest	Defines DPI awareness settings (both legacy dpiAware and modern PerMonitorV2) for Windows executable
build.py	Integrates manifest into Windows builds using PyInstaller's --manifest flag

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