Release MoonSprite DEV.5

[YueHaxgu]

Summary

• release accumulated DEV.5 features, fixes, UI updates, assets, and documentation
• synchronize app/package versions to 0.1.0-dev.5 / DEV.5
• add DEV.5 changelog, release metadata, licenses, built-in fonts, and background presets

Verification

• pnpm check:release-performance (approved-no-change candidate)
• pnpm check:release (134 files, 1461 tests; web and Rust checks passed)
• pnpm package (setup and portable packages generated locally)