v2.0.5 — themed alert dialogs

Themed alert dialogs everywhere. The "Mod load issues detected" popup (and every other alert in the app) was falling back to a native Qt message box — stark white-on-grey Windows chrome with a blue accent, which clashed hard with NullSync's gold-on-black aesthetic and was genuinely hard to read against the rest of the UI.

Fixed

• All alerts now use the Nullcore theme. Built a dialogs.py module with the same info / warning / critical / question surface as QMessageBox, rendered as a dark gold-bordered panel with a Constantia title, role-colored glyph (ℹ / ⚠ / ✖ / ?), and primary/secondary gold-themed buttons. Routed every QMessageBox call site through it:
  • Mod load issues warning (the one that triggered this)
  • Fingerprint scan: deep-scan confirm, "not found", "no folder selected", "folder not found", scan-failed, save success, save-failed
  • Compare: "missing fingerprints", fingerprint read error, bad share code
  • Settings: premium-theme gate, theme-changed, update found, up-to-date, update-check failed
  • License: missing-key warning, license-saved, deactivate confirm (now reads "Deactivate / Cancel" instead of "Yes / No"), deactivated

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Download: `NullSync.exe` (~73 MB, slim PyInstaller bundle)