0.3.0

• Add package-localized resources and Spanish translations
• Add L10n type-safe generated localization API and generator (Tools/generate_localized_strings.swift)
• Add SwiftPM build-tool plugin and Makefile target to generate localizations during CI and builds
• Use Bundle.module for explicit package resource lookup; updated localization helper
• Replace hard-coded strings in EmptyDisplayModel and ErrorDisplayModel with localized accessors
• Update example app Info.plist with CFBundleLocalizations to enable package resource selection
• Remove temporary runtime debug prints and add tests for localization
• Ignore local build/ artifacts in .gitignore