feat: prepare Legio 0.2.0 with artwork caching and Windows fixes

[fraa2a]

Legio 0.2.0 adds independent Store sorting and availability filters, opt-in application/network TXT logging, and Windows stack overflow fixes. Library artwork persists across restarts until explicit refresh. Visible missing artwork takes priority, selected-game requests promote queued work, and image slots remain occupied through processing and cache publication. Metadata and sharp detail artwork refresh only when opening a game page after their respective three-day and five-day intervals, while cached content remains visible.

Navigation uses one requestAnimationFrame opacity clock instead of native Web Animations. Linux keeps WebKitGTK's current default renderer; legacy invalidation is restricted to legacy composition. Dialog blur and Dither recovery fixes preserve glass surfaces. The maintainer confirmed the rebuilt fade works on Hyprland and the previous Windows installer works without crashes.

The native window opens at1280x720 and supports a960x540 logical minimum on Windows and Linux. Native engine zoom scales the entire interface proportionally below1280x720, reaching75% at960x540, including dialogs and popovers. Resize and monitor DPI changes recalculate the scale; minimized zero sizes are ignored. The title bar fits its actual available width, and percentage-height root containers keep page scrolling inside the content area. No new scrollbar suppression was added. Physical sizes are converted to logical sizes once before calculating zoom.

Validation:

• Previous complete native suite: 466 passed, four existing ignored platform/live tests; formatting and Clippy passed.
• Current resize change: Svelte/TypeScript, ESLint, focused window/rendering tests and optimized Linux build passed. Compact scaling: four behavior tests and all-target/all-feature Clippy passed. Native WebKitGTK2.54.1 zoom probe kept document bounds within the viewport and modal/popover coordinates aligned.
• Native WebKit layout regression: the Windows control layout previously overflowed a 960px viewport by 4px; the revised layout has no document overflow at 960x640 or 1280x720 in the measured Library fixtures.
• CI supplies a Windows NSIS test installer, revision metadata, checksums and matching symbols. These artifacts are not published releases.

The maintainer approved the final check and authorized push and merge. Merge must wait for all required checks. Migration is entirely in the TaxLauncher installer; Legio contains no migration importer.