shell-integration

# Shell Integration Sidecar's interactive shell allows users to type directly into tmux sessions from within the TUI. Tmux remains the PTY backend. Sidecar renders ordered control-mode bytes through the shared `tty.Model`, whose VT behavior is behind the `screenmodel` adapter rather than implemented in plugin code. ## Package Structure ``` internal/tty/ # Shared tmux terminal abstraction tty.go # Core Model and State types keymap.go # Bubble Tea -> tmux key translation messages.go # Owner/target/generation-scoped messages session.go # tmux operations (send-keys, capture-pane, resize) scheduler.go # Keyed fallback-poll generation ownership control_*.go # Session-keyed tmux -C transport and manager capture_range.go # Atomic bounded history capture cursor.go # Cursor positioning helpers paste.go # Paste handling (clipboard, bracketed paste) terminal_mode.go # Capture-fallback mode recovery output_buffer.go # Absolute, bounded live/history buffer editor_session.go # Shared inline-editor tmux lifecycle internal/plugins/workspace/ interactive.go # Workspace-specific interactive mode logic interactive_selection.go # Text selection in interactive mode terminal_viewport.go # Pure shared ...