Eliminate redundant profile-manager refresh and centralize UI theme tokens

[KeyffMS]

Summary

• remove the unconditional configuration-grid refresh after closing the visual-profile manager;
• keep SettingsCoordinator.Changed as the single refresh trigger for profile mutations;
• add regression coverage for unchanged and changed manager sessions;
• centralize alternate-surface and danger-state colors in AppTheme;
• remove paint-path font allocation from selector rendering;
• give the selector editing control one owned fallback font with explicit disposal;
• add focused tests for theme-token mapping and font reuse;
• advance product metadata to 0.5.0.34.

Validation

Windows CI must pass the complete build, full regression suite, architecture checks, and self-contained publish validation.

Closes #38
Closes #40