v1.0.7.1: UI Performance & Visual Smoothing Hotfix

Theme additions and worker lifecycle stability patch.

Added

• Adwaita Themes: adds GNOME-inspired Adwaita Dark (neutral dark surfaces with restrained blue accents) and Adwaita Light (clean light surfaces with understated blue accents) color palettes, expanding the theme gallery to 43 curated themes.
• Dynamic Theme Category Counts: calculates theme category counts dynamically in the Theme Gallery filter chips (Modern Dark (7), Light & Pastel (5), Retro & Vintage (8), Cyber & Synth (4), Code Palettes (8), Warm & Nature (11)).

Fixed

• Worker Thread Internal C++ Object Deletion: resolves Shiboken RuntimeError: libshiboken: Internal C++ object (...) already deleted when re-triggering storage health diagnostics (refresh_health), hardware queries (refresh_specs), storage analysis (run_analysis), or memory actions by introducing is_worker_running and stop_worker safe lifecycle helpers and automatically clearing finished worker references.

What's Changed

• Add Adwaita light and dark themes by @Foxils in #5

Full Changelog: v1.0.7...v1.0.7.1