Add compound-components feature flag

Gates all 8 compound components (Form, SearchableList, SplitPanel,
DataGrid, LogViewer, ChatView, MetricsDashboard, Chart) behind a new
`compound-components` feature flag. This feature transitively enables
its dependencies: input-components, data-components, and
display-components.

The `full` feature now includes `compound-components`, so default
behavior is unchanged. Users who only need specific component groups
can now avoid compiling compound components they don't use.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ryanoneill

Cargo.toml

@@ -21,6 +21,7 @@ full = [
     "display-components",
     "navigation-components",
     "overlay-components",
+    "compound-components",
 ]
 
 # Component groups
@@ -29,6 +30,7 @@ data-components = []
 display-components = []
 navigation-components = []
 overlay-components = []
+compound-components = ["input-components", "data-components", "display-components"]
 
 serialization = ["dep:serde", "dep:serde_json", "compact_str/serde", "ratatui/serde"]
 tracing = ["dep:tracing"]

src/component/mod.rs

@@ -121,13 +121,21 @@ mod select;
 mod text_area;
 
 // Compound components
+#[cfg(feature = "compound-components")]
 mod form;
+#[cfg(feature = "compound-components")]
 mod searchable_list;
+#[cfg(feature = "compound-components")]
 mod split_panel;
+#[cfg(feature = "compound-components")]
 mod data_grid;
+#[cfg(feature = "compound-components")]
 mod log_viewer;
+#[cfg(feature = "compound-components")]
 mod chat_view;
+#[cfg(feature = "compound-components")]
 mod metrics_dashboard;
+#[cfg(feature = "compound-components")]
 mod chart;
 
 // Data components
@@ -222,17 +230,25 @@ pub use progress_bar::{ProgressBar, ProgressBarMessage, ProgressBarOutput, Progr
 pub use spinner::{Spinner, SpinnerMessage, SpinnerState, SpinnerStyle};
 
 // Compound components
+#[cfg(feature = "compound-components")]
 pub use form::{Form, FormField, FormFieldKind, FormMessage, FormOutput, FormState, FormValue};
+#[cfg(feature = "compound-components")]
 pub use searchable_list::{
     SearchableList, SearchableListMessage, SearchableListOutput, SearchableListState,
 };
+#[cfg(feature = "compound-components")]
 pub use split_panel::{
     SplitOrientation, SplitPanel, SplitPanelMessage, SplitPanelOutput, SplitPanelState,
 };
+#[cfg(feature = "compound-components")]
 pub use data_grid::{DataGrid, DataGridMessage, DataGridOutput, DataGridState};
+#[cfg(feature = "compound-components")]
 pub use log_viewer::{LogViewer, LogViewerMessage, LogViewerOutput, LogViewerState};
+#[cfg(feature = "compound-components")]
 pub use chat_view::{ChatMessage, ChatRole, ChatView, ChatViewMessage, ChatViewOutput, ChatViewState};
+#[cfg(feature = "compound-components")]
 pub use metrics_dashboard::{MetricKind, MetricWidget, MetricsDashboard, MetricsDashboardMessage, MetricsDashboardOutput, MetricsDashboardState};
+#[cfg(feature = "compound-components")]
 pub use chart::{Chart, ChartKind, ChartMessage, ChartOutput, ChartState, DataSeries};
 
 #[cfg(feature = "display-components")]