create-modal

# Creating Declarative Modals Use the `internal/modal` package. The library handles keyboard navigation, mouse hit regions, hover states, and scrolling automatically. ## Quick Start ```go import "github.com/marcus/sidecar/internal/modal" // 1. Create the modal m := modal.New("Delete Worktree?", modal.WithWidth(58), modal.WithVariant(modal.VariantDanger), modal.WithPrimaryAction("delete"), ). AddSection(modal.Text("Name: " + wt.Name)). AddSection(modal.Spacer()). AddSection(modal.Buttons( modal.Btn(" Delete ", "delete", modal.BtnDanger()), modal.Btn(" Cancel ", "cancel"), )) // 2. Render in View func (p *Plugin) View(width, height int) string { background := p.renderListView(width, height) rendered := p.myModal.Render(width, height, p.mouseHandler) return ui.OverlayModal(background, rendered, width, height) } // 3. Handle input in Update case tea.KeyMsg: action, cmd := p.myModal.HandleKey(msg) if action != "" { return p.handleAction(action) // "delete", "cancel", etc. } return p, cmd case tea.MouseMsg: action := p.myModal.HandleMouse(msg, p.mouseHandler) if action != "" { return p.handleAction(action) } return p, nil ``` ## Critical: Modal Initialization Pattern The modal must exist before input handling. Create an `ensure` function called in **both** View and Update: ```go func (p *Plugin) ensureMyModal() { if p.targetItem == nil { return // Required s...