create-plugin

# Create Plugin ## Architecture Overview - **Bubble Tea model**: `internal/app/model.go` owns the active plugin index, dispatches key events, renders plugin views. - **Registry**: `internal/plugin/registry.go` stores plugins, handles lifecycle with panic protection, keeps an `unavailable` map when `Init` fails (silent degradation). - **Plugin contract**: `internal/plugin/plugin.go` defines the interface every plugin must satisfy. - **Context**: `internal/plugin/context.go` provides `WorkDir`, `ConfigDir`, `Adapters`, `EventBus`, `Logger`, `Epoch`, and `Keymap`. - **Keymap**: `internal/keymap` maps keys to command IDs. Footer/help reads bindings by context using `Plugin.Commands()` + `Plugin.FocusContext()`. ## Plugin Interface Every plugin must implement all of these methods: ```go ID() string // Stable kebab-case identifier Name() string // Short human label for headers/help Icon() string // Single-character glyph for tab strip Init(ctx *Context) error // Lightweight setup; return error to degrade gracefully Start() tea.Cmd // Kick off async work (non-blocking) Update(msg tea.Msg) (Plugin, tea.Cmd) // Pure state transition View(width, height int) string // Render within provided dimensions IsFocused() bool // Check focus state SetFocused(bool) // App calls this on tab switch Commands() []plugin.Command // Footer hints per context FocusContext() string // Current context name for keymap Stop(...