ClipBoardy: Clipboard Manager

We've made ClipBoardy more stable and refined across everyday use. • Added source app filtering to clipboard history, including app icons, item counts, Unknown Source support, and optional remembered selection. • Added Newest First and Oldest First sorting for clipboard history. • Updated history search, counts, empty states, clear-history confirmations, keyboard shortcuts, and footer hints to follow the active source app, content, and search filters. • Added Settings controls for source app filtering and refined history filter customization. • Refreshed the history window with cleaner search, Settings, Actions, and filter chip styling. • Updated the Settings and onboarding previews to match the refreshed history design. • Improved pinned history row state and tightened history footer shortcut labels. • Refined Settings, About, and onboarding with more consistent styling, cleaner navigation, improved storage details, and a resizable onboarding window. • Improved history window dismissal behavior when interacting with ClipBoardy windows. • Added support for launching clipboard history from the Dock icon for users who keep ClipBoardy pinned or access it from recent/suggested apps.