Rework workspace integration and adaptor interface

Improvements

• CoreClarify output capture guidance in bash tool documentation
• TerminalShow scrollbar by default
• TerminalPrevent orphaned opencode subprocesses on shutdown
• TerminalValidate agent when running with attach flag@alberti42
• DesktopRemove blur from todos in app
• DesktopDelay dock animation on session load
• DesktopRemove diff lines from sessions in sidebar
• DesktopLoading session should be scrolled to the bottom
• DesktopClose terminal tabs properly