feat: add hidden collapsed sidebar mode

refs #842

3 files changed, 43 insertions, 0 deletions

diff --git a/src/app/input/sidebar.rs b/src/app/input/sidebar.rs
index fd631cd4..39affc83 100644
--- a/src/app/input/sidebar.rs
+++ b/src/app/input/sidebar.rs
@@ -497,6 +497,7 @@ mod tests {
     use super::super::{app_for_mouse_test, capture_snapshot, mouse, unique_temp_path};
     use crate::{
         app::state::{AgentPanelSort, DragTarget, Mode},
+        config::SidebarCollapsedModeConfig,
         detect::Agent,
         workspace::Workspace,
     };
@@ -969,6 +970,19 @@ mod tests {
     }
 
     #[test]
+    fn hidden_collapsed_sidebar_has_no_mouse_expand_hotspot() {
+        let mut app = app_for_mouse_test();
+        app.state.sidebar_collapsed = true;
+        app.state.sidebar_collapsed_mode = SidebarCollapsedModeConfig::Hidden;
+        app.state.view.sidebar_rect = Rect::new(0, 0, 0, 20);
+        app.state.view.terminal_area = Rect::new(0, 0, 80, 20);
+
+        app.handle_mouse(mouse(MouseEventKind::Down(MouseButton::Left), 0, 19));
+
+        assert!(app.state.sidebar_collapsed);
+    }
+
+    #[test]
     fn clicking_expanded_sidebar_toggle_collapses_sidebar() {
         let mut app = app_for_mouse_test();
         app.state.sidebar_collapsed = false;
diff --git a/src/app/mod.rs b/src/app/mod.rs
index 2860664f..05518134 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -588,6 +588,7 @@ impl App {
             sidebar_width_source,
             sidebar_width_auto: false,
             sidebar_collapsed: false,
+            sidebar_collapsed_mode: config.ui.sidebar_collapsed_mode,
             sidebar_section_split,
             agent_panel_sort,
             next_agent_state_change_seq: 0,
@@ -1340,6 +1341,7 @@ impl App {
                 }
                 self.state.sidebar_min_width = config.ui.sidebar_min_width;
                 self.state.sidebar_max_width = config.ui.sidebar_max_width;
+                self.state.sidebar_collapsed_mode = config.ui.sidebar_collapsed_mode;
                 self.state.mobile_width_threshold = config.ui.mobile_width_threshold;
                 // Re-clamp the live width to the new bounds. No source guard — bounds
                 // always apply, including to widths owned by Persisted or Manual.
@@ -2500,6 +2502,31 @@ mod tests {
     }
 
     #[test]
+    fn reload_config_updates_sidebar_collapsed_mode() {
+        let _guard = config_env_lock().lock().unwrap();
+        let path = temp_config_path("reload-config-sidebar-collapsed-mode");
+        std::fs::create_dir_all(path.parent().unwrap()).unwrap();
+        std::env::set_var(crate::config::CONFIG_PATH_ENV_VAR, &path);
+
+        let mut app = test_app();
+        assert_eq!(
+            app.state.sidebar_collapsed_mode,
+            crate::config::SidebarCollapsedModeConfig::Compact
+        );
+
+        std::fs::write(&path, "[ui]\nsidebar_collapsed_mode = \"hidden\"\n").unwrap();
+        let report = app.reload_config();
+        assert_eq!(report.status, crate::config::ConfigReloadStatus::Applied);
+        assert_eq!(
+            app.state.sidebar_collapsed_mode,
+            crate::config::SidebarCollapsedModeConfig::Hidden
+        );
+
+        std::env::remove_var(crate::config::CONFIG_PATH_ENV_VAR);
+        let _ = std::fs::remove_dir_all(path.parent().unwrap());
+    }
+
+    #[test]
     fn reload_config_updates_sidebar_bounds_and_reclamps() {
         let _guard = config_env_lock().lock().unwrap();
         let path = temp_config_path("reload-config-sidebar-bounds");
diff --git a/src/app/state.rs b/src/app/state.rs
index 9e5dbed1..694ff252 100644
--- a/src/app/state.rs
+++ b/src/app/state.rs
@@ -1349,6 +1349,7 @@ pub struct AppState {
     pub sidebar_width_source: SidebarWidthSource,
     pub sidebar_width_auto: bool,
     pub sidebar_collapsed: bool,
+    pub sidebar_collapsed_mode: crate::config::SidebarCollapsedModeConfig,
     /// Ratio of sidebar height allocated to the workspaces section.
     pub sidebar_section_split: f32,
     pub agent_panel_sort: AgentPanelSort,
@@ -1708,6 +1709,7 @@ impl AppState {
             sidebar_width_source: SidebarWidthSource::ConfigDefault,
             sidebar_width_auto: false,
             sidebar_collapsed: false,
+            sidebar_collapsed_mode: crate::config::SidebarCollapsedModeConfig::Compact,
             sidebar_section_split: 0.5,
             agent_panel_sort: AgentPanelSort::Spaces,
             next_agent_state_change_seq: 0,