Simplify the Fork session dialog and always fork into this window

Fixes

• Make automatic titles lightweight and retry failed attempts
• Return conversation clear after durable reset
• Default terminals to the account login shell and open them from a launcher
• Refresh session rows in every catalog scope when the runtime changes
• Stop requests for unavailable desktop resources#1038
• Hand focus between project overlays before hiding their origins#1040
• Preserve Claude usage access across Keychain token refreshes#1041
• Restore project menubar focus after context menu dismissal
• Keep focused skip link out of desktop layout
• Report the enforced spawn budget to agents#1048
• Share terminal approvals through attention summary
• Restore workspace focus after worktree creation dialog

Features

• Simplify the Fork session dialog and always fork into this window
• Selection-aware session context menu and project context menus#1032
• Group projects into folders and add session totals footer#1047
• Add proto.tsx prototype gallery that renders real web components#1043
• Open Kanban sessions in a resizable drawer over the board#1055
• Multi-select sessions and run bulk actions on the Kanban board#1054
• Inspect and control processes started by sessions#1049

Testing

• Cover remaining merge train review invariants
• Synchronize detached harness session fixtures
• Record additive attention approval schema contract