AndroidTV Ultimate v0.4.0

• Move app and hardware input presets into a versioned, PR-maintained GitHub JSON catalog with strict runtime and CI validation.
• Load cached or bundled presets immediately, refresh GitHub in the background with ETag support, and retain the last valid cache across network or catalog failures.
• Add catalog search, source and refresh status, contribution links, edited-preset indicators, removed-preset warnings, and an explicit restore-defaults action without automatically rewriting saved inputs.