feat: add tabs within workspaces

10 files changed, 1291 insertions, 545 deletions

diff --git a/src/app/actions.rs b/src/app/actions.rs
index 04ff19ac..279cbabf 100644
--- a/src/app/actions.rs
+++ b/src/app/actions.rs
@@ -3,10 +3,9 @@
 
 use tracing::{info, warn};
 
-use crate::detect::{Agent, AgentState};
+use crate::detect::AgentState;
 use crate::events::AppEvent;
 use crate::layout::{find_in_direction, NavDirection, PaneId};
-use crate::pane::EffectiveStateChange;
 
 use super::state::{AppState, Mode, ToastKind, ToastNotification};
 
@@ -44,32 +43,22 @@ fn notification_toast_for_state_change(
     }
 }
 
-fn agent_label(agent: Agent) -> &'static str {
+fn agent_label(agent: crate::detect::Agent) -> &'static str {
     match agent {
-        Agent::Pi => "pi",
-        Agent::Claude => "claude",
-        Agent::Codex => "codex",
-        Agent::Gemini => "gemini",
-        Agent::Cursor => "cursor",
-        Agent::Cline => "cline",
-        Agent::OpenCode => "opencode",
-        Agent::GithubCopilot => "copilot",
-        Agent::Kimi => "kimi",
-        Agent::Droid => "droid",
-        Agent::Amp => "amp",
+        crate::detect::Agent::Pi => "pi",
+        crate::detect::Agent::Claude => "claude",
+        crate::detect::Agent::Codex => "codex",
+        crate::detect::Agent::Gemini => "gemini",
+        crate::detect::Agent::Cursor => "cursor",
+        crate::detect::Agent::Cline => "cline",
+        crate::detect::Agent::OpenCode => "opencode",
+        crate::detect::Agent::GithubCopilot => "copilot",
+        crate::detect::Agent::Kimi => "kimi",
+        crate::detect::Agent::Droid => "droid",
+        crate::detect::Agent::Amp => "amp",
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub struct PaneStateUpdate {
-    pub pane_id: PaneId,
-    pub ws_idx: usize,
-    pub previous_agent: Option<Agent>,
-    pub previous_state: AgentState,
-    pub agent: Option<Agent>,
-    pub state: AgentState,
-}
-
 // ---------------------------------------------------------------------------
 // Workspace operations
 // ---------------------------------------------------------------------------
@@ -79,8 +68,56 @@ impl AppState {
         if idx < self.workspaces.len() {
             self.active = Some(idx);
             self.selected = idx;
-            for pane in self.workspaces[idx].panes.values_mut() {
-                pane.seen = true;
+            if let Some(ws) = self.workspaces.get_mut(idx) {
+                ws.switch_tab(ws.active_tab);
+            }
+        }
+    }
+
+    pub fn switch_tab(&mut self, idx: usize) {
+        if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
+            ws.switch_tab(idx);
+        }
+    }
+
+    pub fn next_workspace(&mut self) {
+        if !self.workspaces.is_empty() {
+            let current = self.active.unwrap_or(self.selected);
+            let next = (current + 1) % self.workspaces.len();
+            self.switch_workspace(next);
+        }
+    }
+
+    pub fn previous_workspace(&mut self) {
+        if !self.workspaces.is_empty() {
+            let current = self.active.unwrap_or(self.selected);
+            let prev = if current == 0 {
+                self.workspaces.len() - 1
+            } else {
+                current - 1
+            };
+            self.switch_workspace(prev);
+        }
+    }
+
+    pub fn next_tab(&mut self) {
+        if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
+            if !ws.tabs.is_empty() {
+                let next = (ws.active_tab + 1) % ws.tabs.len();
+                ws.switch_tab(next);
+            }
+        }
+    }
+
+    pub fn previous_tab(&mut self) {
+        if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
+            if !ws.tabs.is_empty() {
+                let prev = if ws.active_tab == 0 {
+                    ws.tabs.len() - 1
+                } else {
+                    ws.active_tab - 1
+                };
+                ws.switch_tab(prev);
             }
         }
     }
@@ -113,8 +150,12 @@ impl AppState {
         let panes = &self.view.pane_infos;
         if let Some(focused) = panes.iter().find(|p| p.is_focused) {
             if let Some(target) = find_in_direction(focused, direction, panes) {
-                if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
-                    ws.layout.focus_pane(target);
+                if let Some(tab) = self
+                    .active
+                    .and_then(|i| self.workspaces.get_mut(i))
+                    .and_then(|ws| ws.active_tab_mut())
+                {
+                    tab.layout.focus_pane(target);
                 }
             }
         }
@@ -127,33 +168,63 @@ impl AppState {
                 .pane_infos
                 .iter()
                 .fold(first.rect, |acc, p| acc.union(p.rect));
-            if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
-                ws.layout.resize_focused(direction, 0.05, area);
+            if let Some(tab) = self
+                .active
+                .and_then(|i| self.workspaces.get_mut(i))
+                .and_then(|ws| ws.active_tab_mut())
+            {
+                tab.layout.resize_focused(direction, 0.05, area);
             }
         }
     }
 
     pub fn cycle_pane(&mut self, reverse: bool) {
-        if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
+        if let Some(tab) = self
+            .active
+            .and_then(|i| self.workspaces.get_mut(i))
+            .and_then(|ws| ws.active_tab_mut())
+        {
             if reverse {
-                ws.layout.focus_prev();
+                tab.layout.focus_prev();
             } else {
-                ws.layout.focus_next();
+                tab.layout.focus_next();
             }
         }
     }
 
     pub fn toggle_fullscreen(&mut self) {
-        if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
-            if ws.layout.pane_count() > 1 {
-                ws.zoomed = !ws.zoomed;
+        if let Some(tab) = self
+            .active
+            .and_then(|i| self.workspaces.get_mut(i))
+            .and_then(|ws| ws.active_tab_mut())
+        {
+            if tab.layout.pane_count() > 1 {
+                tab.zoomed = !tab.zoomed;
             }
         }
     }
 
     pub fn close_pane(&mut self) {
+        let should_close_workspace = self
+            .active
+            .and_then(|i| self.workspaces.get_mut(i))
+            .is_some_and(|ws| ws.close_focused());
+        if should_close_workspace {
+            self.close_selected_workspace();
+        }
+    }
+
+    pub fn close_tab(&mut self) {
+        let should_close_workspace = self
+            .active
+            .and_then(|i| self.workspaces.get(i))
+            .is_some_and(|ws| ws.tabs.len() <= 1);
+        if should_close_workspace {
+            self.close_selected_workspace();
+            return;
+        }
         if let Some(ws) = self.active.and_then(|i| self.workspaces.get_mut(i)) {
-            ws.close_focused();
+            ws.close_active_tab();
         }
     }
 }
@@ -184,7 +255,7 @@ impl AppState {
             None => return,
         };
 
-        let rt = match ws.runtimes.get(&sel.pane_id) {
+        let rt = match ws.runtime(sel.pane_id) {
             Some(r) => r,
             None => return,
         };
@@ -204,12 +275,9 @@ impl AppState {
 // ---------------------------------------------------------------------------
 
 impl AppState {
-    pub fn handle_app_event(&mut self, event: AppEvent) -> Vec<PaneStateUpdate> {
+    pub fn handle_app_event(&mut self, event: AppEvent) {
         match event {
-            AppEvent::PaneDied { pane_id } => {
-                self.handle_pane_died(pane_id);
-                Vec::new()
-            }
+            AppEvent::PaneDied { pane_id } => self.handle_pane_died(pane_id),
             AppEvent::UpdateReady { version } => {
                 self.update_available = Some(version.clone());
                 self.update_dismissed = true;
@@ -218,115 +286,65 @@ impl AppState {
                     title: format!("updated to v{version}"),
                     context: "restart to use it".to_string(),
                 });
-                Vec::new()
             }
             AppEvent::StateChanged {
                 pane_id,
                 agent,
                 state,
-            } => self
-                .update_pane_state(pane_id, |pane| pane.set_detected_state(agent, state))
-                .into_iter()
-                .collect(),
-            AppEvent::HookStateReported {
-                pane_id,
-                source,
-                agent,
-                state,
-                message,
-            } => self
-                .update_pane_state(pane_id, |pane| {
-                    pane.set_hook_authority(source, agent, state, message)
-                })
-                .into_iter()
-                .collect(),
-            AppEvent::HookAuthorityCleared { pane_id, source } => self
-                .update_pane_state(pane_id, |pane| pane.clear_hook_authority(source.as_deref()))
-                .into_iter()
-                .collect(),
-            AppEvent::HookAgentReleased {
-                pane_id,
-                source,
-                agent,
-            } => self
-                .update_pane_state(pane_id, |pane| pane.release_agent(&source, agent))
-                .into_iter()
-                .collect(),
-        }
-    }
-
-    fn update_pane_state<F>(&mut self, pane_id: PaneId, update: F) -> Option<PaneStateUpdate>
-    where
-        F: FnOnce(&mut crate::pane::PaneState) -> Option<EffectiveStateChange>,
-    {
-        let ws_idx = self
-            .workspaces
-            .iter()
-            .position(|ws| ws.panes.contains_key(&pane_id))?;
-        let workspace_name = self.workspaces[ws_idx].display_name();
-        let change = {
-            let pane = self.workspaces[ws_idx].panes.get_mut(&pane_id)?;
-            update(pane)?
-        };
-        self.apply_pane_state_change(ws_idx, pane_id, &workspace_name, change);
-        Some(PaneStateUpdate {
-            pane_id,
-            ws_idx,
-            previous_agent: change.previous_agent,
-            previous_state: change.previous_state,
-            agent: change.agent,
-            state: change.state,
-        })
-    }
-
-    fn apply_pane_state_change(
-        &mut self,
-        ws_idx: usize,
-        pane_id: PaneId,
-        workspace_name: &str,
-        change: EffectiveStateChange,
-    ) {
-        let is_active_ws = self.active == Some(ws_idx);
-        let Some(pane) = self.workspaces[ws_idx].panes.get_mut(&pane_id) else {
-            return;
-        };
-
-        if change.state == AgentState::Idle
-            && change.previous_state != AgentState::Idle
-            && !is_active_ws
-        {
-            pane.seen = false;
-        }
-
-        if self.sound.allows(change.agent) {
-            if let Some(sound) = notification_sound_for_state_change(
-                is_active_ws,
-                change.previous_state,
-                change.state,
-            ) {
-                crate::sound::play(sound);
-            }
-        }
-
-        if self.toast_config.enabled {
-            if let (Some(agent), Some(kind)) = (
-                change.agent,
-                notification_toast_for_state_change(
-                    is_active_ws,
-                    change.previous_state,
-                    change.state,
-                ),
-            ) {
-                let event_text = match kind {
-                    ToastKind::NeedsAttention => "needs attention",
-                    ToastKind::Finished => "finished",
-                    ToastKind::UpdateInstalled => "updated",
-                };
-                self.toast = Some(ToastNotification {
-                    kind,
-                    title: format!("{} {}", agent_label(agent), event_text),
-                    context: format!("{} · {}", workspace_name, ws_idx + 1),
-                });
+            } => {
+                for (ws_idx, ws) in self.workspaces.iter_mut().enumerate() {
+                    let workspace_name = ws.display_name();
+                    let Some(tab_idx) = ws.find_tab_index_for_pane(pane_id) else {
+                        continue;
+                    };
+                    if let Some(pane) = ws.tabs[tab_idx].panes.get_mut(&pane_id) {
+                        let is_active_ws = self.active == Some(ws_idx) && ws.active_tab == tab_idx;
+                        let prev_state = pane.state;
+
+                        // Mark unseen when transitioning to Idle in background
+                        if state == AgentState::Idle
+                            && prev_state != AgentState::Idle
+                            && !is_active_ws
+                        {
+                            pane.seen = false;
+                        }
+
+                        // Blocked prompts should always make noise; done sounds stay background-only.
+                        if self.sound.allows(agent) {
+                            if let Some(sound) =
+                                notification_sound_for_state_change(is_active_ws, prev_state, state)
+                            {
+                                crate::sound::play(sound);
+                            }
+                        }
+
+                        if self.toast_config.enabled {
+                            if let (Some(agent), Some(kind)) = (
+                                agent,
+                                notification_toast_for_state_change(
+                                    is_active_ws,
+                                    prev_state,
+                                    state,
+                                ),
+                            ) {
+                                let event_text = match kind {
+                                    ToastKind::NeedsAttention => "needs attention",
+                                    ToastKind::Finished => "finished",
+                                    ToastKind::UpdateInstalled => "updated",
+                                };
+                                self.toast = Some(ToastNotification {
+                                    kind,
+                                    title: format!("{} {}", agent_label(agent), event_text),
+                                    context: format!("{} · {}", workspace_name, ws_idx + 1),
+                                });
+                            }
+                        }
+
+                        pane.detected_agent = agent;
+                        pane.state = state;
+                        break;
+                    }
+                }
             }
         }
     }
@@ -335,16 +353,19 @@ impl AppState {
         let ws_idx = self
             .workspaces
             .iter()
-            .position(|ws| ws.panes.contains_key(&pane_id));
+            .position(|ws| ws.find_tab_index_for_pane(pane_id).is_some());
 
         let Some(ws_idx) = ws_idx else {
             warn!(pane = pane_id.raw(), "PaneDied for unknown pane");
             return;
         };
 
-        let ws = &mut self.workspaces[ws_idx];
+        let should_close_workspace = {
+            let ws = &mut self.workspaces[ws_idx];
+            ws.remove_pane(pane_id)
+        };
 
-        if ws.layout.pane_count() <= 1 {
+        if should_close_workspace {
             self.workspaces.remove(ws_idx);
             if self.workspaces.is_empty() {
                 self.active = None;
@@ -362,8 +383,6 @@ impl AppState {
                     self.selected = self.workspaces.len() - 1;
                 }
             }
-        } else {
-            ws.remove_pane(pane_id);
         }
     }
 }
@@ -541,94 +560,6 @@ mod tests {
     }
 
     #[test]
-    fn hook_authority_ignores_fallback_state_changes() {
-        let mut state = app_with_workspaces(&["test"]);
-        let pane_id = *state.workspaces[0].panes.keys().next().unwrap();
-
-        state.handle_app_event(AppEvent::StateChanged {
-            pane_id,
-            agent: Some(Agent::Pi),
-            state: AgentState::Idle,
-        });
-        state.handle_app_event(AppEvent::HookStateReported {
-            pane_id,
-            source: "herdr:pi".into(),
-            agent: Agent::Pi,
-            state: AgentState::Working,
-            message: None,
-        });
-        state.handle_app_event(AppEvent::StateChanged {
-            pane_id,
-            agent: Some(Agent::Pi),
-            state: AgentState::Idle,
-        });
-
-        let pane = state.workspaces[0].panes.get(&pane_id).unwrap();
-        assert_eq!(pane.fallback_state, AgentState::Idle);
-        assert_eq!(pane.state, AgentState::Working);
-        assert!(pane.hook_authority.is_some());
-    }
-
-    #[test]
-    fn hook_authority_clears_when_agent_disappears() {
-        let mut state = app_with_workspaces(&["test"]);
-        let pane_id = *state.workspaces[0].panes.keys().next().unwrap();
-
-        state.handle_app_event(AppEvent::StateChanged {
-            pane_id,
-            agent: Some(Agent::Pi),
-            state: AgentState::Idle,
-        });
-        state.handle_app_event(AppEvent::HookStateReported {
-            pane_id,
-            source: "herdr:pi".into(),
-            agent: Agent::Pi,
-            state: AgentState::Working,
-            message: None,
-        });
-        state.handle_app_event(AppEvent::StateChanged {
-            pane_id,
-            agent: None,
-            state: AgentState::Unknown,
-        });
-
-        let pane = state.workspaces[0].panes.get(&pane_id).unwrap();
-        assert!(pane.hook_authority.is_none());
-        assert_eq!(pane.detected_agent, None);
-        assert_eq!(pane.state, AgentState::Unknown);
-    }
-
-    #[test]
-    fn hook_agent_release_clears_identity_immediately() {
-        let mut state = app_with_workspaces(&["test"]);
-        let pane_id = *state.workspaces[0].panes.keys().next().unwrap();
-
-        state.handle_app_event(AppEvent::StateChanged {
-            pane_id,
-            agent: Some(Agent::Pi),
-            state: AgentState::Idle,
-        });
-        state.handle_app_event(AppEvent::HookStateReported {
-            pane_id,
-            source: "herdr:pi".into(),
-            agent: Agent::Pi,
-            state: AgentState::Working,
-            message: None,
-        });
-        state.handle_app_event(AppEvent::HookAgentReleased {
-            pane_id,
-            source: "herdr:pi".into(),
-            agent: Agent::Pi,
-        });
-
-        let pane = state.workspaces[0].panes.get(&pane_id).unwrap();
-        assert!(pane.hook_authority.is_none());
-        assert_eq!(pane.detected_agent, None);
-        assert_eq!(pane.fallback_state, AgentState::Unknown);
-        assert_eq!(pane.state, AgentState::Unknown);
-    }
-
-    #[test]
     fn waiting_sound_plays_even_in_active_workspace() {
         assert_eq!(
             notification_sound_for_state_change(true, AgentState::Working, AgentState::Blocked),
diff --git a/src/app/input.rs b/src/app/input.rs
index e0f012e9..9a4c9aaf 100644
--- a/src/app/input.rs
+++ b/src/app/input.rs
@@ -32,6 +32,35 @@ use super::App;
 // Key handling
 // ---------------------------------------------------------------------------
 
+fn terminal_direct_navigation_action(state: &AppState, key: &KeyEvent) -> Option<NavigateAction> {
+    let kb = &state.keybinds;
+    if kb
+        .previous_workspace
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::PreviousWorkspace);
+    }
+    if kb
+        .next_workspace
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::NextWorkspace);
+    }
+    if kb
+        .previous_tab
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::PreviousTab);
+    }
+    if kb
+        .next_tab
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::NextTab);
+    }
+    None
+}
+
 impl App {
     pub(super) async fn handle_key(&mut self, key: TerminalKey) {
         match self.state.mode {
@@ -42,7 +71,9 @@ impl App {
                     Mode::Onboarding => self.handle_onboarding_key(key),
                     Mode::ReleaseNotes => self.handle_release_notes_key(key),
                     Mode::Navigate => handle_navigate_key(&mut self.state, key),
-                    Mode::RenameSession => handle_rename_key(&mut self.state, key),
+                    Mode::RenameWorkspace | Mode::RenameTab => {
+                        handle_rename_key(&mut self.state, key)
+                    }
                     Mode::Resize => handle_resize_key(&mut self.state, key),
                     Mode::ConfirmClose => handle_confirm_close_key(&mut self.state, key),
                     Mode::ContextMenu => handle_context_menu_key(&mut self.state, key),
@@ -223,6 +254,11 @@ impl App {
 
         let key_event = key.as_key_event();
 
+        if let Some(action) = terminal_direct_navigation_action(&self.state, &key_event) {
+            execute_navigate_action(&mut self.state, action);
+            return;
+        }
+
         if self.state.is_prefix(&key_event) {
             self.state.mode = Mode::Navigate;
             return;
@@ -446,6 +482,13 @@ enum NavigateAction {
     NewWorkspace,
     RenameWorkspace,
     CloseWorkspace,
+    PreviousWorkspace,
+    NextWorkspace,
+    NewTab,
+    RenameTab,
+    PreviousTab,
+    NextTab,
+    CloseTab,
     SplitVertical,
     SplitHorizontal,
     ClosePane,
@@ -465,6 +508,45 @@ fn navigate_action_for_key(state: &AppState, key: &KeyEvent) -> Option<NavigateA
     if key_matches(key, kb.close_workspace.0, kb.close_workspace.1) {
         return Some(NavigateAction::CloseWorkspace);
     }
+    if kb
+        .previous_workspace
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::PreviousWorkspace);
+    }
+    if kb
+        .next_workspace
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::NextWorkspace);
+    }
+    if key_matches(key, kb.new_tab.0, kb.new_tab.1) {
+        return Some(NavigateAction::NewTab);
+    }
+    if kb
+        .rename_tab
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::RenameTab);
+    }
+    if kb
+        .previous_tab
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::PreviousTab);
+    }
+    if kb
+        .next_tab
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::NextTab);
+    }
+    if kb
+        .close_tab
+        .is_some_and(|(code, mods)| key_matches(key, code, mods))
+    {
+        return Some(NavigateAction::CloseTab);
+    }
     if key_matches(key, kb.split_vertical.0, kb.split_vertical.1) {
         return Some(NavigateAction::SplitVertical);
     }
@@ -495,7 +577,7 @@ fn execute_navigate_action(state: &mut AppState, action: NavigateAction) {
         NavigateAction::RenameWorkspace => {
             if !state.workspaces.is_empty() {
                 state.name_input = state.workspaces[state.selected].display_name();
-                state.mode = Mode::RenameSession;
+                state.mode = Mode::RenameWorkspace;
             }
         }
         NavigateAction::CloseWorkspace => {
@@ -508,6 +590,38 @@ fn execute_navigate_action(state: &mut AppState, action: NavigateAction) {
                 }
             }
         }
+        NavigateAction::PreviousWorkspace => {
+            state.previous_workspace();
+            leave_navigate_mode(state);
+        }
+        NavigateAction::NextWorkspace => {
+            state.next_workspace();
+            leave_navigate_mode(state);
+        }
+        NavigateAction::NewTab => {
+            state.request_new_tab = true;
+            leave_navigate_mode(state);
+        }
+        NavigateAction::RenameTab => {
+            if let Some(ws) = state.active.and_then(|i| state.workspaces.get(i)) {
+                if let Some(name) = ws.active_tab_display_name() {
+                    state.name_input = name;
+                    state.mode = Mode::RenameTab;
+                }
+            }
+        }
+        NavigateAction::PreviousTab => {
+            state.previous_tab();
+            leave_navigate_mode(state);
+        }
+        NavigateAction::NextTab => {
+            state.next_tab();
+            leave_navigate_mode(state);
+        }
+        NavigateAction::CloseTab => {
+            state.close_tab();
+            leave_navigate_mode(state);
+        }
         NavigateAction::SplitVertical => {
             state.split_pane(Direction::Horizontal);
             leave_navigate_mode(state);
@@ -567,8 +681,20 @@ fn handle_rename_key(state: &mut AppState, key: KeyEvent) {
             } else {
                 state.name_input.trim().to_string()
             };
-            if !new_name.is_empty() && !state.workspaces.is_empty() {
-                state.workspaces[state.selected].set_custom_name(new_name);
+            if !new_name.is_empty() {
+                match state.mode {
+                    Mode::RenameWorkspace if !state.workspaces.is_empty() => {
+                        state.workspaces[state.selected].set_custom_name(new_name);
+                    }
+                    Mode::RenameTab => {
+                        if let Some(ws) = state.active.and_then(|i| state.workspaces.get_mut(i)) {
+                            if let Some(tab) = ws.active_tab_mut() {
+                                tab.set_custom_name(new_name);
+                            }
+                        }
+                    }
+                    _ => {}
+                }
             }
             state.name_input.clear();
             state.mode = Mode::Navigate;
@@ -577,6 +703,9 @@ fn handle_rename_key(state: &mut AppState, key: KeyEvent) {
             state.name_input.clear();
             state.mode = Mode::Navigate;
         }
+        KeyCode::Char('c') if key.modifiers == crossterm::event::KeyModifiers::CONTROL => {
+            state.name_input.clear();
+        }
         KeyCode::Backspace => {
             state.name_input.pop();
         }
@@ -653,7 +782,7 @@ fn apply_context_menu_action(state: &mut AppState, menu: ContextMenuState, idx:
         (ContextMenuKind::Workspace { ws_idx }, Some("Rename")) => {
             state.selected = ws_idx;
             state.name_input = state.workspaces[ws_idx].display_name();
-            state.mode = Mode::RenameSession;
+            state.mode = Mode::RenameWorkspace;
         }
         (ContextMenuKind::Workspace { ws_idx }, Some("Close")) => {
             state.selected = ws_idx;
@@ -664,6 +793,35 @@ fn apply_context_menu_action(state: &mut AppState, menu: ContextMenuState, idx:
                 state.mode = Mode::Navigate;
             }
         }
+        (ContextMenuKind::Tab { ws_idx, tab_idx }, Some("New tab")) => {
+            state.selected = ws_idx;
+            state.active = Some(ws_idx);
+            state.switch_tab(tab_idx);
+            state.request_new_tab = true;
+            state.mode = Mode::Terminal;
+        }
+        (ContextMenuKind::Tab { ws_idx, tab_idx }, Some("Rename")) => {
+            state.selected = ws_idx;
+            state.active = Some(ws_idx);
+            state.switch_tab(tab_idx);
+            if let Some(ws) = state.workspaces.get(ws_idx) {
+                if let Some(name) = ws.active_tab_display_name() {
+                    state.name_input = name;
+                    state.mode = Mode::RenameTab;
+                }
+            }
+        }
+        (ContextMenuKind::Tab { ws_idx, tab_idx }, Some("Close")) => {
+            state.selected = ws_idx;
+            state.active = Some(ws_idx);
+            state.switch_tab(tab_idx);
+            state.close_tab();
+            state.mode = if state.active.is_some() {
+                Mode::Terminal
+            } else {
+                Mode::Navigate
+            };
+        }
         (ContextMenuKind::Pane, Some("Split vertical")) => {
             state.split_pane(Direction::Horizontal);
             state.mode = Mode::Terminal;
@@ -760,6 +918,30 @@ impl AppState {
             && row < button.y + button.height
     }
 
+    fn rename_modal_inner(&self) -> Option<Rect> {
+        self.onboarding_modal_inner(56, 7)
+    }
+
+    fn rename_button_at(&self, col: u16, row: u16) -> Option<&'static str> {
+        let inner = self.rename_modal_inner()?;
+        if inner.height < 4 || inner.width < 28 {
+            return None;
+        }
+        let (save, clear, cancel) = crate::ui::rename_button_rects(inner);
+        if row != save.y {
+            return None;
+        }
+        if col >= save.x && col < save.x + save.width {
+            Some("save")
+        } else if col >= clear.x && col < clear.x + clear.width {
+            Some("clear")
+        } else if col >= cancel.x && col < cancel.x + cancel.width {
+            Some("cancel")
+        } else {
+            None
+        }
+    }
+
     fn release_notes_body_rect(&self) -> Option<Rect> {
         let inner = self.release_notes_modal_inner()?;
         if inner.height < 8 || inner.width < 4 {
@@ -1082,6 +1264,19 @@ impl AppState {
                     return None;
                 }
 
+                if matches!(self.mode, Mode::RenameWorkspace | Mode::RenameTab) {
+                    match self.rename_button_at(mouse.column, mouse.row) {
+                        Some("save") => handle_rename_key(self, KeyEvent::from(KeyCode::Enter)),
+                        Some("clear") => self.name_input.clear(),
+                        Some("cancel") => handle_rename_key(self, KeyEvent::from(KeyCode::Esc)),
+                        None => {
+                            handle_rename_key(self, KeyEvent::from(KeyCode::Esc));
+                        }
+                        _ => {}
+                    }
+                    return None;
+                }
+
                 if self.mode == Mode::ContextMenu {
                     let item_idx = self.context_menu_item_at(mouse.column, mouse.row);
                     if let Some(menu) = self.context_menu.take() {
@@ -1139,6 +1334,17 @@ impl AppState {
                     }
                 }
 
+                if let Some(tab_idx) = self.tab_at(mouse.column, mouse.row) {
+                    self.switch_tab(tab_idx);
+                    self.mode = Mode::Terminal;
+                    return None;
+                }
+                if self.on_new_tab_button(mouse.column, mouse.row) {
+                    self.request_new_tab = true;
+                    self.mode = Mode::Terminal;
+                    return None;
+                }
+
                 if in_sidebar {
                     if self.sidebar_collapsed {
                         let idx = (mouse.row - sidebar.y) as usize;
@@ -1300,6 +1506,23 @@ impl AppState {
                 }
             }
 
+            MouseEventKind::Down(MouseButton::Right)
+                if self.tab_at(mouse.column, mouse.row).is_some() =>
+            {
+                if let (Some(ws_idx), Some(tab_idx)) =
+                    (self.active, self.tab_at(mouse.column, mouse.row))
+                {
+                    self.switch_tab(tab_idx);
+                    self.context_menu = Some(ContextMenuState {
+                        kind: ContextMenuKind::Tab { ws_idx, tab_idx },
+                        x: mouse.column,
+                        y: mouse.row,
+                        selected: 0,
+                    });
+                    self.mode = Mode::ContextMenu;
+                }
+            }
+
             MouseEventKind::Down(MouseButton::Right) if !in_sidebar => {
                 if self.pane_at(mouse.column, mouse.row).is_some() {
                     self.context_menu = Some(ContextMenuState {
@@ -1337,6 +1560,29 @@ impl AppState {
     }
 
     /// Find which workspace index a sidebar row belongs to (two-section layout).
+    fn tab_at(&self, col: u16, row: u16) -> Option<usize> {
+        self.view
+            .tab_hit_areas
+            .iter()
+            .enumerate()
+            .find_map(|(idx, area)| {
+                (row >= area.y
+                    && row < area.y + area.height
+                    && col >= area.x
+                    && col < area.x + area.width)
+                    .then_some(idx)
+            })
+    }
+
+    fn on_new_tab_button(&self, col: u16, row: u16) -> bool {
+        let area = self.view.new_tab_hit_area;
+        area.width > 0
+            && row >= area.y
+            && row < area.y + area.height
+            && col >= area.x
+            && col < area.x + area.width
+    }
+
     fn workspace_at_row(&self, row: u16) -> Option<usize> {
         let sidebar = self.view.sidebar_rect;
         let total_h = sidebar.height as usize;
@@ -1744,7 +1990,7 @@ mod tests {
             KeyEvent::new(KeyCode::Char('g'), KeyModifiers::empty()),
         );
 
-        assert_eq!(state.mode, Mode::RenameSession);
+        assert_eq!(state.mode, Mode::RenameWorkspace);
         assert_eq!(state.name_input, "test");
     }
 
diff --git a/src/app/mod.rs b/src/app/mod.rs
index f6eb9af3..b69c324e 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -186,6 +186,7 @@ impl App {
             mode,
             should_quit: false,
             request_new_workspace: false,
+            request_new_tab: false,
             request_complete_onboarding: false,
             name_input: String::new(),
             onboarding_step: 0,
@@ -198,6 +199,9 @@ impl App {
             }),
             view: state::ViewState {
                 sidebar_rect: Rect::default(),
+                tab_bar_rect: Rect::default(),
+                tab_hit_areas: Vec::new(),
+                new_tab_hit_area: Rect::default(),
                 terminal_area: Rect::default(),
                 pane_infos: Vec::new(),
                 split_borders: Vec::new(),
@@ -250,7 +254,7 @@ impl App {
             state
                 .workspaces
                 .get(idx)
-                .map(|ws| (idx, ws.layout.focused()))
+                .and_then(|ws| ws.focused_pane_id().map(|pane_id| (idx, pane_id)))
         });
 
         Self {
@@ -319,6 +323,12 @@ impl App {
                 needs_render = true;
             }
 
+            if self.state.request_new_tab {
+                self.state.request_new_tab = false;
+                self.create_tab();
+                needs_render = true;
+            }
+
             let now = Instant::now();
             self.sync_animation_timer(now);
 
@@ -682,7 +692,7 @@ impl App {
             self.state
                 .workspaces
                 .get(idx)
-                .map(|ws| (idx, ws.layout.focused()))
+                .and_then(|ws| ws.focused_pane_id().map(|pane_id| (idx, pane_id)))
         });
         if current_focus == self.last_focus {
             return;
@@ -717,7 +727,7 @@ impl App {
             .workspaces
             .iter()
             .enumerate()
-            .find_map(|(ws_idx, ws)| ws.panes.get(&pane_id).map(|pane| (ws_idx, pane)))
+            .find_map(|(ws_idx, ws)| ws.pane_state(pane_id).map(|pane| (ws_idx, pane)))
     }
 
     fn public_workspace_id(&self, ws_idx: usize) -> String {
@@ -1451,6 +1461,38 @@ impl App {
         }
     }
 
+    fn create_tab(&mut self) {
+        let initial_cwd = self
+            .state
+            .active
+            .and_then(|i| self.state.workspaces.get(i))
+            .and_then(|ws| ws.focused_runtime())
+            .and_then(|rt| rt.cwd())
+            .or_else(|| std::env::current_dir().ok())
+            .unwrap_or_else(|| std::path::PathBuf::from("/"));
+        if let Err(e) = self.create_tab_with_options(initial_cwd, true) {
+            error!(err = %e, "failed to create tab");
+        }
+    }
+
+    fn create_tab_with_options(
+        &mut self,
+        initial_cwd: std::path::PathBuf,
+        focus: bool,
+    ) -> std::io::Result<usize> {
+        let Some(ws_idx) = self.state.active else {
+            return self.create_workspace_with_options(initial_cwd, focus);
+        };
+        let (rows, cols) = self.state.estimate_pane_size();
+        let ws = &mut self.state.workspaces[ws_idx];
+        let idx = ws.create_tab(rows, cols, initial_cwd)?;
+        if focus {
+            ws.switch_tab(idx);
+            self.state.mode = Mode::Terminal;
+        }
+        Ok(idx)
+    }
+
     fn create_workspace_with_options(
         &mut self,
         initial_cwd: std::path::PathBuf,
@@ -1493,9 +1535,9 @@ impl App {
                 ));
             };
             Ok(ws
-                .layout
-                .pane_ids()
-                .into_iter()
+                .tabs
+                .iter()
+                .flat_map(|tab| tab.layout.pane_ids().into_iter())
                 .filter_map(|pane_id| self.pane_info(ws_idx, pane_id))
                 .collect())
         } else {
@@ -1505,9 +1547,9 @@ impl App {
                 .iter()
                 .enumerate()
                 .flat_map(|(ws_idx, ws)| {
-                    ws.layout
-                        .pane_ids()
-                        .into_iter()
+                    ws.tabs
+                        .iter()
+                        .flat_map(|tab| tab.layout.pane_ids().into_iter())
                         .filter_map(move |pane_id| self.pane_info(ws_idx, pane_id))
                 })
                 .collect())
@@ -1520,12 +1562,16 @@ impl App {
         pane_id: crate::layout::PaneId,
     ) -> Option<crate::api::schema::PaneInfo> {
         let ws = self.state.workspaces.get(ws_idx)?;
-        let pane = ws.panes.get(&pane_id)?;
-        let runtime = ws.runtimes.get(&pane_id);
+        let pane = ws.pane_state(pane_id)?;
+        let runtime = ws.runtime(pane_id);
+        let focused = self.state.active == Some(ws_idx)
+            && ws
+                .focused_pane_id()
+                .is_some_and(|focused| focused == pane_id);
         Some(crate::api::schema::PaneInfo {
             pane_id: self.public_pane_id(ws_idx, pane_id)?,
             workspace_id: self.public_workspace_id(ws_idx),
-            focused: self.state.active == Some(ws_idx) && ws.layout.focused() == pane_id,
+            focused,
             cwd: runtime
                 .and_then(|rt| rt.cwd())
                 .map(|cwd| cwd.display().to_string()),
@@ -1541,7 +1587,7 @@ impl App {
         pane_id: crate::layout::PaneId,
     ) -> Option<(&crate::pane::PaneRuntime, String)> {
         let ws = self.state.workspaces.get(ws_idx)?;
-        let runtime = ws.runtimes.get(&pane_id)?;
+        let runtime = ws.runtime(pane_id)?;
         Some((runtime, self.public_workspace_id(ws_idx)))
     }
 
@@ -1554,7 +1600,7 @@ impl App {
         &crate::pane::PaneRuntime,
     )> {
         let ws = self.state.workspaces.get(ws_idx)?;
-        let runtime = ws.runtimes.get(&pane_id)?;
+        let runtime = ws.runtime(pane_id)?;
         Some((&runtime.sender, runtime))
     }
 
@@ -1566,7 +1612,7 @@ impl App {
             number: index + 1,
             label: ws.display_name(),
             focused: self.state.active == Some(index),
-            pane_count: ws.panes.len(),
+            pane_count: ws.public_pane_numbers.len(),
             agent_state: pane_agent_state(agg_state),
         }
     }
diff --git a/src/app/state.rs b/src/app/state.rs
index 49c740ae..5770154d 100644
--- a/src/app/state.rs
+++ b/src/app/state.rs
@@ -324,6 +324,9 @@ impl Palette {
 /// Updated before each render, consumed by render and mouse handling.
 pub struct ViewState {
     pub sidebar_rect: Rect,
+    pub tab_bar_rect: Rect,
+    pub tab_hit_areas: Vec<Rect>,
+    pub new_tab_hit_area: Rect,
     pub terminal_area: Rect,
     pub pane_infos: Vec<PaneInfo>,
     pub split_borders: Vec<SplitBorder>,
@@ -335,7 +338,8 @@ pub enum Mode {
     ReleaseNotes,
     Navigate,
     Terminal,
-    RenameSession,
+    RenameWorkspace,
+    RenameTab,
     Resize,
     ConfirmClose,
     ContextMenu,
@@ -414,6 +418,7 @@ pub(crate) struct DragState {
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ContextMenuKind {
     Workspace { ws_idx: usize },
+    Tab { ws_idx: usize, tab_idx: usize },
     Pane,
 }
 
@@ -429,6 +434,7 @@ impl ContextMenuState {
     pub fn items(&self) -> &'static [&'static str] {
         match self.kind {
             ContextMenuKind::Workspace { .. } => &["Rename", "Close"],
+            ContextMenuKind::Tab { .. } => &["New tab", "Rename", "Close"],
             ContextMenuKind::Pane => &[
                 "Split vertical",
                 "Split horizontal",
@@ -469,6 +475,7 @@ pub struct AppState {
     pub mode: Mode,
     pub should_quit: bool,
     pub request_new_workspace: bool,
+    pub request_new_tab: bool,
     pub request_complete_onboarding: bool,
     pub name_input: String,
     pub onboarding_step: usize,
@@ -559,6 +566,7 @@ impl AppState {
             mode: Mode::Navigate,
             should_quit: false,
             request_new_workspace: false,
+            request_new_tab: false,
             request_complete_onboarding: false,
             name_input: String::new(),
             onboarding_step: 0,
@@ -566,6 +574,9 @@ impl AppState {
             release_notes: None,
             view: ViewState {
                 sidebar_rect: Rect::default(),
+                tab_bar_rect: Rect::default(),
+                tab_hit_areas: Vec::new(),
+                new_tab_hit_area: Rect::default(),
                 terminal_area: Rect::default(),
                 pane_infos: Vec::new(),
                 split_borders: Vec::new(),
@@ -597,6 +608,14 @@ impl AppState {
                 rename_workspace_label: "shift+n".into(),
                 close_workspace: (KeyCode::Char('d'), KeyModifiers::empty()),
                 close_workspace_label: "d".into(),
+                previous_workspace: None,
+                next_workspace: None,
+                new_tab: (KeyCode::Char('c'), KeyModifiers::empty()),
+                new_tab_label: "c".into(),
+                rename_tab: None,
+                previous_tab: None,
+                next_tab: None,
+                close_tab: None,
                 split_vertical: (KeyCode::Char('v'), KeyModifiers::empty()),
                 split_vertical_label: "v".into(),
                 split_horizontal: (KeyCode::Char('-'), KeyModifiers::empty()),
diff --git a/src/config.rs b/src/config.rs
index cfd76594..6f5d17ae 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -2,6 +2,8 @@ use std::path::PathBuf;
 
 use crossterm::event::{KeyCode, KeyModifiers};
 use serde::Deserialize;
+
+pub const CONFIG_PATH_ENV_VAR: &str = "HERDR_CONFIG_PATH";
 use tracing::warn;
 
 use crate::detect::Agent;
@@ -80,6 +82,20 @@ pub struct KeysConfig {
     pub rename_workspace: String,
     /// Close the selected workspace. Default: "d"
     pub close_workspace: String,
+    /// Select the previous workspace. Unset by default.
+    pub previous_workspace: String,
+    /// Select the next workspace. Unset by default.
+    pub next_workspace: String,
+    /// Create a new tab in the active workspace. Default: "c"
+    pub new_tab: String,
+    /// Rename the active tab. Unset by default.
+    pub rename_tab: String,
+    /// Select the previous tab. Unset by default.
+    pub previous_tab: String,
+    /// Select the next tab. Unset by default.
+    pub next_tab: String,
+    /// Close the active tab. Unset by default.
+    pub close_tab: String,
     /// Split pane vertically (side by side). Default: "v"
     pub split_vertical: String,
     /// Split pane horizontally (stacked). Default: "-"
@@ -184,6 +200,13 @@ impl Default for KeysConfig {
             new_workspace: "n".into(),
             rename_workspace: "shift+n".into(),
             close_workspace: "d".into(),
+            previous_workspace: "".into(),
+            next_workspace: "".into(),
+            new_tab: "c".into(),
+            rename_tab: "".into(),
+            previous_tab: "".into(),
+            next_tab: "".into(),
+            close_tab: "".into(),
             split_vertical: "v".into(),
             split_horizontal: "-".into(),
             close_pane: "x".into(),
@@ -343,6 +366,27 @@ impl Config {
             }
         }
 
+        fn optional_binding(
+            field: &'static str,
+            configured_label: &str,
+            diagnostics: &mut Vec<String>,
+        ) -> (Option<(KeyCode, KeyModifiers)>, String) {
+            if configured_label.trim().is_empty() {
+                return (None, String::new());
+            }
+            let (value, diag) = parse_key_combo_with_diagnostic(
+                configured_label,
+                field,
+                (KeyCode::Null, KeyModifiers::empty()),
+            );
+            if let Some(diag) = diag {
+                diagnostics.push(diag);
+                (None, String::new())
+            } else {
+                (Some(value), configured_label.to_string())
+            }
+        }
+
         let mut bindings = vec![
             binding(
                 "keys.new_workspace",
@@ -366,6 +410,13 @@ impl Config {
                 &mut diagnostics,
             ),
             binding(
+                "keys.new_tab",
+                &self.keys.new_tab,
+                "c",
+                (KeyCode::Char('c'), KeyModifiers::empty()),
+                &mut diagnostics,
+            ),
+            binding(
                 "keys.split_vertical",
                 &self.keys.split_vertical,
                 "v",
@@ -409,6 +460,27 @@ impl Config {
             ),
         ];
 
+        let optional_bindings = [
+            optional_binding(
+                "keys.previous_workspace",
+                &self.keys.previous_workspace,
+                &mut diagnostics,
+            ),
+            optional_binding(
+                "keys.next_workspace",
+                &self.keys.next_workspace,
+                &mut diagnostics,
+            ),
+            optional_binding("keys.rename_tab", &self.keys.rename_tab, &mut diagnostics),
+            optional_binding(
+                "keys.previous_tab",
+                &self.keys.previous_tab,
+                &mut diagnostics,
+            ),
+            optional_binding("keys.next_tab", &self.keys.next_tab, &mut diagnostics),
+            optional_binding("keys.close_tab", &self.keys.close_tab, &mut diagnostics),
+        ];
+
         use std::collections::HashMap;
         let mut seen: HashMap<(KeyCode, KeyModifiers), &str> = HashMap::new();
         for binding in &mut bindings {
@@ -433,18 +505,26 @@ impl Config {
             rename_workspace_label: bindings[1].label.clone(),
             close_workspace: bindings[2].value,
             close_workspace_label: bindings[2].label.clone(),
-            split_vertical: bindings[3].value,
-            split_vertical_label: bindings[3].label.clone(),
-            split_horizontal: bindings[4].value,
-            split_horizontal_label: bindings[4].label.clone(),
-            close_pane: bindings[5].value,
-            close_pane_label: bindings[5].label.clone(),
-            fullscreen: bindings[6].value,
-            fullscreen_label: bindings[6].label.clone(),
-            resize_mode: bindings[7].value,
-            resize_mode_label: bindings[7].label.clone(),
-            toggle_sidebar: bindings[8].value,
-            toggle_sidebar_label: bindings[8].label.clone(),
+            previous_workspace: optional_bindings[0].0,
+            next_workspace: optional_bindings[1].0,
+            new_tab: bindings[3].value,
+            new_tab_label: bindings[3].label.clone(),
+            rename_tab: optional_bindings[2].0,
+            previous_tab: optional_bindings[3].0,
+            next_tab: optional_bindings[4].0,
+            close_tab: optional_bindings[5].0,
+            split_vertical: bindings[4].value,
+            split_vertical_label: bindings[4].label.clone(),
+            split_horizontal: bindings[5].value,
+            split_horizontal_label: bindings[5].label.clone(),
+            close_pane: bindings[6].value,
+            close_pane_label: bindings[6].label.clone(),
+            fullscreen: bindings[7].value,
+            fullscreen_label: bindings[7].label.clone(),
+            resize_mode: bindings[8].value,
+            resize_mode_label: bindings[8].label.clone(),
+            toggle_sidebar: bindings[9].value,
+            toggle_sidebar_label: bindings[9].label.clone(),
         };
 
         (prefix_diag, prefix, diagnostics, keybinds)
@@ -460,6 +540,14 @@ pub struct Keybinds {
     pub rename_workspace_label: String,
     pub close_workspace: (KeyCode, KeyModifiers),
     pub close_workspace_label: String,
+    pub previous_workspace: Option<(KeyCode, KeyModifiers)>,
+    pub next_workspace: Option<(KeyCode, KeyModifiers)>,
+    pub new_tab: (KeyCode, KeyModifiers),
+    pub new_tab_label: String,
+    pub rename_tab: Option<(KeyCode, KeyModifiers)>,
+    pub previous_tab: Option<(KeyCode, KeyModifiers)>,
+    pub next_tab: Option<(KeyCode, KeyModifiers)>,
+    pub close_tab: Option<(KeyCode, KeyModifiers)>,
     pub split_vertical: (KeyCode, KeyModifiers),
     pub split_vertical_label: String,
     pub split_horizontal: (KeyCode, KeyModifiers),
@@ -554,6 +642,9 @@ pub fn save_onboarding_choices(sound_enabled: bool, toast_enabled: bool) -> std:
 }
 
 pub fn config_path() -> PathBuf {
+    if let Ok(path) = std::env::var(CONFIG_PATH_ENV_VAR) {
+        return PathBuf::from(path);
+    }
     if let Ok(dir) = std::env::var("XDG_CONFIG_HOME") {
         PathBuf::from(dir).join("herdr/config.toml")
     } else if let Ok(home) = std::env::var("HOME") {
diff --git a/src/main.rs b/src/main.rs
index a23ec6c3..a5a43b39 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -107,6 +107,13 @@ const DEFAULT_CONFIG: &str = r##"# herdr configuration
 # new_workspace = "n"
 # rename_workspace = "shift+n"
 # close_workspace = "d"
+# previous_workspace = "" # optional, unset by default
+# next_workspace = ""     # optional, unset by default
+# new_tab = "c"
+# rename_tab = ""         # optional, unset by default
+# previous_tab = ""       # optional, unset by default
+# next_tab = ""           # optional, unset by default
+# close_tab = ""          # optional, unset by default
 # split_vertical = "v"
 # split_horizontal = "-"
 # close_pane = "x"
@@ -204,8 +211,9 @@ fn main() -> io::Result<()> {
         println!("  --show-changelog    Preview the current version's release notes");
         println!("  --help, -h          Show this help");
         println!();
-        println!("Config: ~/.config/herdr/config.toml");
+        println!("Config: {}", config::config_path().display());
         println!("Logs:   ~/.config/herdr/herdr.log");
+        println!("Env:    HERDR_CONFIG_PATH overrides config file path");
         println!("Home:   https://herdr.dev");
         return Ok(());
     }
diff --git a/src/persist.rs b/src/persist.rs
index 49a36141..3585228e 100644
--- a/src/persist.rs
+++ b/src/persist.rs
@@ -19,7 +19,7 @@ use crate::pane::{PaneRuntime, PaneState};
 use crate::workspace::Workspace;
 
 /// Current snapshot format version.
-const SNAPSHOT_VERSION: u32 = 2;
+const SNAPSHOT_VERSION: u32 = 3;
 
 /// Serializable snapshot of the entire herdr session.
 #[derive(Serialize, Deserialize)]
@@ -36,13 +36,21 @@ pub struct SessionSnapshot {
 pub struct WorkspaceSnapshot {
     #[serde(default)]
     pub custom_name: Option<String>,
+    pub identity_cwd: PathBuf,
+    pub tabs: Vec<TabSnapshot>,
+    #[serde(default)]
+    pub active_tab: usize,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct TabSnapshot {
+    #[serde(default)]
+    pub custom_name: Option<String>,
     pub layout: LayoutSnapshot,
     pub panes: HashMap<u32, PaneSnapshot>,
     pub zoomed: bool,
-    /// Raw pane ID that was focused when saved.
     #[serde(default)]
     pub focused: Option<u32>,
-    /// Raw pane ID used as the workspace identity source.
     #[serde(default)]
     pub root_pane: Option<u32>,
 }
@@ -87,22 +95,31 @@ pub fn capture(
 }
 
 fn capture_workspace(ws: &Workspace) -> WorkspaceSnapshot {
+    WorkspaceSnapshot {
+        custom_name: ws.custom_name.clone(),
+        identity_cwd: ws.identity_cwd.clone(),
+        tabs: ws.tabs.iter().map(capture_tab).collect(),
+        active_tab: ws.active_tab,
+    }
+}
+
+fn capture_tab(tab: &crate::workspace::Tab) -> TabSnapshot {
     let mut panes = HashMap::new();
-    for id in ws.panes.keys() {
-        let cwd = ws
+    for id in tab.panes.keys() {
+        let cwd = tab
             .runtimes
             .get(id)
             .and_then(|rt| rt.cwd())
             .unwrap_or_else(|| std::env::current_dir().unwrap_or_else(|_| "/".into()));
         panes.insert(id.raw(), PaneSnapshot { cwd });
     }
-    WorkspaceSnapshot {
-        custom_name: ws.custom_name.clone(),
-        layout: capture_node(ws.layout.root()),
+    TabSnapshot {
+        custom_name: tab.custom_name.clone(),
+        layout: capture_node(tab.layout.root()),
         panes,
-        zoomed: ws.zoomed,
-        focused: Some(ws.layout.focused().raw()),
-        root_pane: Some(ws.root_pane.raw()),
+        zoomed: tab.zoomed,
+        focused: Some(tab.layout.focused().raw()),
+        root_pane: Some(tab.root_pane.raw()),
     }
 }
 
@@ -161,10 +178,53 @@ fn restore_workspace(
     render_notify: Arc<Notify>,
     render_dirty: Arc<AtomicBool>,
 ) -> Option<Workspace> {
+    let mut tabs = Vec::new();
+    let mut public_pane_numbers = HashMap::new();
+    let mut next_public_pane_number = 1;
+
+    for (idx, tab_snap) in snap.tabs.iter().enumerate() {
+        let tab = restore_tab(
+            tab_snap,
+            idx + 1,
+            rows,
+            cols,
+            events.clone(),
+            render_notify.clone(),
+            render_dirty.clone(),
+        )?;
+        for pane_id in tab.layout.pane_ids() {
+            public_pane_numbers.insert(pane_id, next_public_pane_number);
+            next_public_pane_number += 1;
+        }
+        tabs.push(tab);
+    }
+
+    if tabs.is_empty() {
+        return None;
+    }
+
+    Some(Workspace {
+        custom_name: snap.custom_name.clone(),
+        identity_cwd: snap.identity_cwd.clone(),
+        cached_git_ahead_behind: None,
+        public_pane_numbers,
+        next_public_pane_number,
+        active_tab: snap.active_tab.min(tabs.len().saturating_sub(1)),
+        tabs,
+    })
+}
+
+fn restore_tab(
+    snap: &TabSnapshot,
+    number: usize,
+    rows: u16,
+    cols: u16,
+    events: mpsc::Sender<AppEvent>,
+    render_notify: Arc<Notify>,
+    render_dirty: Arc<AtomicBool>,
+) -> Option<crate::workspace::Tab> {
     let (node, id_map) = restore_node_remapped(&snap.layout);
     let pane_ids = collect_pane_ids(&node);
-
-    // Restore focused pane: map saved raw ID to new ID, fall back to first pane
     let focus = snap
         .focused
         .and_then(|old_raw| id_map.get(&old_raw).copied())
@@ -198,7 +258,7 @@ fn restore_workspace(
                 runtimes.insert(*id, runtime);
             }
             Err(e) => {
-                error!(workspace = ?snap.custom_name, err = %e, "failed to restore pane");
+                error!(tab = ?snap.custom_name, err = %e, "failed to restore pane");
                 return None;
             }
         }
@@ -210,20 +270,11 @@ fn restore_workspace(
         .or_else(|| pane_ids.first().copied())
         .unwrap_or(PaneId::from_raw(0));
 
-    let public_pane_numbers = layout
-        .pane_ids()
-        .into_iter()
-        .enumerate()
-        .map(|(index, pane_id)| (pane_id, index + 1))
-        .collect();
-
-    Some(Workspace {
+    Some(crate::workspace::Tab {
         custom_name: snap.custom_name.clone(),
+        number,
         root_pane,
         layout,
-        cached_git_ahead_behind: None,
-        public_pane_numbers,
-        next_public_pane_number: panes.len() + 1,
         panes,
         runtimes,
         zoomed: snap.zoomed,
@@ -421,16 +472,21 @@ mod tests {
         let snap = SessionSnapshot {
             workspaces: vec![WorkspaceSnapshot {
                 custom_name: Some("pi-mono".to_string()),
-                layout: LayoutSnapshot::Split {
-                    direction: DirectionSnapshot::Horizontal,
-                    ratio: 0.5,
-                    first: Box::new(LayoutSnapshot::Pane(0)),
-                    second: Box::new(LayoutSnapshot::Pane(1)),
-                },
-                panes,
-                zoomed: false,
-                focused: Some(0),
-                root_pane: Some(0),
+                identity_cwd: PathBuf::from("/home/can/Projects/herdr"),
+                tabs: vec![TabSnapshot {
+                    custom_name: Some("api".to_string()),
+                    layout: LayoutSnapshot::Split {
+                        direction: DirectionSnapshot::Horizontal,
+                        ratio: 0.5,
+                        first: Box::new(LayoutSnapshot::Pane(0)),
+                        second: Box::new(LayoutSnapshot::Pane(1)),
+                    },
+                    panes,
+                    zoomed: false,
+                    focused: Some(0),
+                    root_pane: Some(0),
+                }],
+                active_tab: 0,
             }],
             active: Some(0),
             selected: 0,
@@ -445,9 +501,10 @@ mod tests {
             restored.workspaces[0].custom_name.as_deref(),
             Some("pi-mono")
         );
-        assert_eq!(restored.workspaces[0].panes.len(), 2);
+        assert_eq!(restored.workspaces[0].tabs.len(), 1);
+        assert_eq!(restored.workspaces[0].tabs[0].panes.len(), 2);
         assert_eq!(
-            restored.workspaces[0].panes[&0].cwd,
+            restored.workspaces[0].tabs[0].panes[&0].cwd,
             PathBuf::from("/home/can/Projects/herdr")
         );
     }
@@ -494,9 +551,9 @@ mod tests {
     }
 
     #[test]
-    fn focused_pane_default_is_none() {
-        let json = r#"{"name":"test","layout":{"Pane":0},"panes":{},"zoomed":false}"#;
+    fn active_tab_default_is_zero() {
+        let json = r#"{"custom_name":"test","identity_cwd":"/tmp","tabs":[]}"#;
         let ws: WorkspaceSnapshot = serde_json::from_str(json).unwrap();
-        assert_eq!(ws.focused, None); // #[serde(default)]
+        assert_eq!(ws.active_tab, 0);
     }
 }
diff --git a/src/raw_input.rs b/src/raw_input.rs
index 859f4c26..dd61ee5a 100644
--- a/src/raw_input.rs
+++ b/src/raw_input.rs
@@ -53,6 +53,11 @@ fn drain_buffer(buffer: &mut Vec<u8>, tx: &mpsc::Sender<RawInputEvent>) {
         let Some((event, consumed)) = extract_one_event(buffer) else {
             break;
         };
+        tracing::debug!(
+            raw_bytes = ?&buffer[..consumed],
+            event = ?event,
+            "raw input event parsed"
+        );
         buffer.drain(..consumed);
         let _ = tx.blocking_send(event);
     }
diff --git a/src/ui.rs b/src/ui.rs
index 9e2db7c6..cbf8fdd2 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -42,20 +42,35 @@ pub fn compute_view(app: &mut AppState, area: Rect) {
     let [sidebar_area, main_area] =
         Layout::horizontal([Constraint::Length(sidebar_w), Constraint::Min(1)]).areas(area);
 
-    let terminal_area = main_area;
+    let has_tabs = app.active.and_then(|i| app.workspaces.get(i)).is_some();
+    let (tab_bar_rect, terminal_area) = if has_tabs && main_area.height > 1 {
+        let [tab_bar_rect, terminal_area] =
+            Layout::vertical([Constraint::Length(1), Constraint::Min(1)]).areas(main_area);
+        (tab_bar_rect, terminal_area)
+    } else {
+        (Rect::default(), main_area)
+    };
+
+    let tab_hit_areas = app
+        .active
+        .and_then(|i| app.workspaces.get(i))
+        .map(|ws| compute_tab_hit_areas(ws, tab_bar_rect))
+        .unwrap_or_default();
+    let new_tab_hit_area = compute_new_tab_hit_area(&tab_hit_areas, tab_bar_rect);
 
-    // Compute split borders
     let split_borders = app
         .active
         .and_then(|i| app.workspaces.get(i))
         .map(|ws| ws.layout.splits(terminal_area))
         .unwrap_or_default();
 
-    // Compute pane layout + reconcile sizes
     let pane_infos = compute_pane_infos(app, terminal_area);
 
     app.view = crate::app::ViewState {
         sidebar_rect: sidebar_area,
+        tab_bar_rect,
+        tab_hit_areas,
+        new_tab_hit_area,
         terminal_area,
         pane_infos,
         split_borders,
@@ -65,6 +80,7 @@ pub fn compute_view(app: &mut AppState, area: Rect) {
 /// Render the UI — reads AppState but does not mutate it.
 pub fn render(app: &AppState, frame: &mut Frame) {
     let sidebar_area = app.view.sidebar_rect;
+    let tab_bar_area = app.view.tab_bar_rect;
     let terminal_area = app.view.terminal_area;
 
     if app.sidebar_collapsed {
@@ -72,6 +88,7 @@ pub fn render(app: &AppState, frame: &mut Frame) {
     } else {
         render_sidebar(app, frame, sidebar_area);
     }
+    render_tab_bar(app, frame, tab_bar_area);
     render_panes(app, frame, terminal_area);
 
     match app.mode {
@@ -85,7 +102,7 @@ pub fn render(app: &AppState, frame: &mut Frame) {
             render_context_menu(app, frame);
         }
         Mode::Settings => render_settings_overlay(app, frame, frame.area()),
-        Mode::RenameSession => {}
+        Mode::RenameWorkspace | Mode::RenameTab => render_rename_overlay(app, frame, frame.area()),
         Mode::Terminal => {}
     }
 
@@ -105,6 +122,87 @@ pub fn render(app: &AppState, frame: &mut Frame) {
     }
 }
 
+const MIN_TAB_WIDTH: u16 = 8;
+const NEW_TAB_WIDTH: u16 = 3;
+
+fn compute_tab_hit_areas(ws: &crate::workspace::Workspace, area: Rect) -> Vec<Rect> {
+    if area.width == 0 || area.height == 0 {
+        return Vec::new();
+    }
+
+    let mut x = area.x;
+    let mut rects = Vec::new();
+    let right = area.x + area.width;
+    for tab in &ws.tabs {
+        if x >= right.saturating_sub(NEW_TAB_WIDTH) {
+            break;
+        }
+        let desired = (tab.display_name().chars().count() as u16 + 4).max(MIN_TAB_WIDTH);
+        let remaining = right.saturating_sub(NEW_TAB_WIDTH).saturating_sub(x);
+        let width = desired.min(remaining).max(1);
+        rects.push(Rect::new(x, area.y, width, 1));
+        x = x.saturating_add(width + 1);
+    }
+    rects
+}
+
+fn compute_new_tab_hit_area(tab_hit_areas: &[Rect], area: Rect) -> Rect {
+    if area.width == 0 || area.height == 0 {
+        return Rect::default();
+    }
+    let x = tab_hit_areas
+        .last()
+        .map(|rect| rect.x + rect.width + 1)
+        .unwrap_or(area.x)
+        .min(area.x + area.width.saturating_sub(NEW_TAB_WIDTH));
+    Rect::new(x, area.y, NEW_TAB_WIDTH.min(area.width), 1)
+}
+
+fn render_tab_bar(app: &AppState, frame: &mut Frame, area: Rect) {
+    if area.width == 0 || area.height == 0 {
+        return;
+    }
+    let Some(ws_idx) = app.active else {
+        return;
+    };
+    let Some(ws) = app.workspaces.get(ws_idx) else {
+        return;
+    };
+
+    let p = &app.palette;
+
+    frame.render_widget(
+        Paragraph::new(" ".repeat(area.width as usize)).style(Style::default().bg(p.panel_bg)),
+        area,
+    );
+
+    for (idx, tab) in ws.tabs.iter().enumerate() {
+        let Some(rect) = app.view.tab_hit_areas.get(idx).copied() else {
+            break;
+        };
+        let active = idx == ws.active_tab;
+        let style = if active {
+            Style::default()
+                .fg(p.panel_bg)
+                .bg(p.accent)
+                .add_modifier(Modifier::BOLD)
+        } else {
+            Style::default().fg(p.overlay1).bg(p.surface0)
+        };
+        let width = rect.width as usize;
+        let name = tab.display_name();
+        let text = format!(" {:width$}", name, width = width.saturating_sub(1));
+        frame.render_widget(Paragraph::new(text).style(style), rect);
+    }
+
+    if app.view.new_tab_hit_area.width > 0 {
+        frame.render_widget(
+            Paragraph::new(" + ").style(Style::default().fg(p.overlay1)),
+            app.view.new_tab_hit_area,
+        );
+    }
+}
+
 /// Compute pane layout info and resize pane runtimes to match.
 fn compute_pane_infos(app: &AppState, area: Rect) -> Vec<PaneInfo> {
     let Some(ws_idx) = app.active else {
@@ -217,7 +315,7 @@ fn render_sidebar_collapsed(app: &AppState, frame: &mut Frame, area: Rect) {
     let is_navigating = matches!(
         app.mode,
         Mode::Navigate
-            | Mode::RenameSession
+            | Mode::RenameWorkspace
             | Mode::Resize
             | Mode::ConfirmClose
             | Mode::ContextMenu
@@ -284,7 +382,7 @@ fn render_sidebar(app: &AppState, frame: &mut Frame, area: Rect) {
     let is_navigating = matches!(
         app.mode,
         Mode::Navigate
-            | Mode::RenameSession
+            | Mode::RenameWorkspace
             | Mode::Resize
             | Mode::ConfirmClose
             | Mode::ContextMenu
@@ -357,8 +455,7 @@ fn render_workspace_list(app: &AppState, frame: &mut Frame, area: Rect, is_navig
         let (agg_state, agg_seen) = ws.aggregate_state();
 
         // Determine row height for background fill
-        let has_second_line =
-            ws.branch().is_some() || (app.mode == Mode::RenameSession && i == app.selected);
+        let has_second_line = ws.branch().is_some();
         let row_height: u16 = if has_second_line { 2 } else { 1 };
 
         // Background fill: selected gets brighter surface, active gets subtle surface
@@ -419,17 +516,9 @@ fn render_workspace_list(app: &AppState, frame: &mut Frame, area: Rect, is_navig
         );
         row_y += 1;
 
-        // Line 2: branch or rename input
+        // Line 2: branch
         if row_y < list_bottom {
-            if app.mode == Mode::RenameSession && i == app.selected {
-                let text = format!("   {}\u{2588}", app.name_input);
-                frame.render_widget(Clear, Rect::new(area.x, row_y, area.width, 1));
-                frame.render_widget(
-                    Paragraph::new(text).style(Style::default().fg(p.yellow)),
-                    Rect::new(area.x, row_y, area.width, 1),
-                );
-                row_y += 1;
-            } else if let Some(branch) = ws.branch() {
+            if let Some(branch) = ws.branch() {
                 let upstream_label = ws.git_ahead_behind().and_then(|(ahead, behind)| {
                     let mut parts = Vec::new();
                     if ahead > 0 {
@@ -1314,11 +1403,13 @@ fn render_navigate_overlay(app: &AppState, frame: &mut Frame, area: Rect) {
     let kb = &app.keybinds;
     let line1 = Line::from(vec![
         Span::styled(format!(" {}", kb.new_workspace_label), key),
-        Span::styled(" new  ", dim),
+        Span::styled(" new ws  ", dim),
         Span::styled(kb.rename_workspace_label.as_str(), key),
-        Span::styled(" rename  ", dim),
+        Span::styled(" rename ws  ", dim),
         Span::styled(kb.close_workspace_label.as_str(), key),
         Span::styled(" close ws  ", dim),
+        Span::styled(kb.new_tab_label.as_str(), key),
+        Span::styled(" new tab  ", dim),
         Span::styled(kb.split_vertical_label.as_str(), key),
         Span::styled(" split│  ", dim),
         Span::styled(kb.split_horizontal_label.as_str(), key),
@@ -1435,6 +1526,90 @@ fn render_resize_overlay(app: &AppState, frame: &mut Frame, area: Rect) {
 }
 
 /// Centered popup confirmation dialog with dimmed background.
+pub(crate) fn rename_button_rects(inner: Rect) -> (Rect, Rect, Rect) {
+    let save_w = 10u16;
+    let clear_w = 11u16;
+    let cancel_w = 12u16;
+    let gap = 2u16;
+    let total_w = save_w + gap + clear_w + gap + cancel_w;
+    let x = inner.x + inner.width.saturating_sub(total_w) / 2;
+    let y = inner.y + 3;
+    (
+        Rect::new(x, y, save_w, 1),
+        Rect::new(x + save_w + gap, y, clear_w, 1),
+        Rect::new(x + save_w + gap + clear_w + gap, y, cancel_w, 1),
+    )
+}
+
+fn render_rename_overlay(app: &AppState, frame: &mut Frame, area: Rect) {
+    dim_background(frame, area);
+
+    let title = match app.mode {
+        Mode::RenameWorkspace => "rename workspace",
+        Mode::RenameTab => "rename tab",
+        _ => return,
+    };
+
+    let Some(inner) = render_modal_shell(frame, area, 56, 7, &app.palette) else {
+        return;
+    };
+    if inner.height < 4 {
+        return;
+    }
+
+    let rows = Layout::vertical([
+        Constraint::Length(1),
+        Constraint::Length(1),
+        Constraint::Length(1),
+        Constraint::Length(1),
+        Constraint::Min(0),
+    ])
+    .areas::<5>(inner);
+
+    render_modal_header(frame, rows[0], title, &app.palette);
+
+    let input_rect = Rect::new(rows[2].x, rows[2].y, rows[2].width, 1);
+    frame.render_widget(Clear, input_rect);
+    frame.render_widget(
+        Paragraph::new(format!(" {}█", app.name_input)).style(
+            Style::default()
+                .fg(app.palette.text)
+                .bg(app.palette.surface0),
+        ),
+        input_rect,
+    );
+
+    let (save_rect, clear_rect, cancel_rect) = rename_button_rects(inner);
+
+    frame.render_widget(
+        Paragraph::new(" ↵ save ").style(
+            Style::default()
+                .fg(app.palette.panel_bg)
+                .bg(app.palette.accent)
+                .add_modifier(Modifier::BOLD),
+        ),
+        save_rect,
+    );
+    frame.render_widget(
+        Paragraph::new(" ^c clear ").style(
+            Style::default()
+                .fg(app.palette.text)
+                .bg(app.palette.surface0)
+                .add_modifier(Modifier::BOLD),
+        ),
+        clear_rect,
+    );
+    frame.render_widget(
+        Paragraph::new(" esc cancel ").style(
+            Style::default()
+                .fg(app.palette.text)
+                .bg(app.palette.surface0)
+                .add_modifier(Modifier::BOLD),
+        ),
+        cancel_rect,
+    );
+}
+
 fn render_confirm_close_overlay(app: &AppState, frame: &mut Frame, area: Rect) {
     let ws_name = app
         .workspaces
diff --git a/src/workspace.rs b/src/workspace.rs
index 39ee19a0..d10cdfe2 100644
--- a/src/workspace.rs
+++ b/src/workspace.rs
@@ -1,4 +1,5 @@
 use std::collections::HashMap;
+use std::ops::{Deref, DerefMut};
 use std::path::{Path, PathBuf};
 use std::sync::atomic::AtomicBool;
 use std::sync::Arc;
@@ -12,19 +13,12 @@ use crate::events::AppEvent;
 use crate::layout::{PaneId, TileLayout};
 use crate::pane::{PaneRuntime, PaneState};
 
-/// A named workspace containing tiled terminal panes.
-pub struct Workspace {
-    /// User-provided override. If set, auto-derived identity stops updating.
+pub struct Tab {
     pub custom_name: Option<String>,
-    /// Identity source for this workspace.
+    pub number: usize,
+    /// Identity source for this tab's pane tree.
     pub root_pane: PaneId,
     pub layout: TileLayout,
-    /// Cached ahead/behind counts for the root repo's current branch upstream.
-    pub(crate) cached_git_ahead_behind: Option<(usize, usize)>,
-    /// Stable-ish public pane numbers within this workspace.
-    /// New panes append at the end; closing a pane compacts higher numbers down.
-    pub public_pane_numbers: HashMap<PaneId, usize>,
-    pub(crate) next_public_pane_number: usize,
     /// Pane state — always present, testable without PTYs.
     pub panes: HashMap<PaneId, PaneState>,
     /// Pane runtimes — only present in production (empty in tests).
@@ -35,7 +29,7 @@ pub struct Workspace {
     pub(crate) render_dirty: Arc<AtomicBool>,
 }
 
-impl Drop for Workspace {
+impl Drop for Tab {
     fn drop(&mut self) {
         let runtimes = std::mem::take(&mut self.runtimes);
         for (pane_id, runtime) in runtimes {
@@ -44,8 +38,9 @@ impl Drop for Workspace {
     }
 }
 
-impl Workspace {
+impl Tab {
     pub fn new(
+        number: usize,
         initial_cwd: PathBuf,
         rows: u16,
         cols: u16,
@@ -66,19 +61,14 @@ impl Workspace {
 
         let mut panes = HashMap::new();
         panes.insert(root_id, PaneState::new());
-        let mut public_pane_numbers = HashMap::new();
-        public_pane_numbers.insert(root_id, 1);
         let mut runtimes = HashMap::new();
         runtimes.insert(root_id, runtime);
 
-        info!(root_pane = root_id.raw(), "workspace created");
         Ok(Self {
             custom_name: None,
+            number,
             root_pane: root_id,
             layout,
-            cached_git_ahead_behind: None,
-            public_pane_numbers,
-            next_public_pane_number: 2,
             panes,
             runtimes,
             zoomed: false,
@@ -88,7 +78,16 @@ impl Workspace {
         })
     }
 
-    /// Split the focused pane. Returns the new pane id.
+    pub fn display_name(&self) -> String {
+        self.custom_name
+            .clone()
+            .unwrap_or_else(|| self.number.to_string())
+    }
+
+    pub fn set_custom_name(&mut self, name: String) {
+        self.custom_name = Some(name);
+    }
+
     pub fn split_focused(
         &mut self,
         direction: Direction,
@@ -109,35 +108,22 @@ impl Workspace {
             self.render_dirty.clone(),
         )?;
         self.panes.insert(new_id, PaneState::new());
-        self.public_pane_numbers
-            .insert(new_id, self.next_public_pane_number);
-        self.next_public_pane_number += 1;
         self.runtimes.insert(new_id, runtime);
         self.zoomed = false;
         Ok(new_id)
     }
 
-    /// Close the focused pane. Returns the removed pane id, or None if last pane.
-    pub fn close_focused(&mut self) -> Option<PaneId> {
+    pub fn close_focused(&mut self) -> Option<(PaneId, Option<PaneRuntime>)> {
         let pane_id = self.layout.focused();
-        self.close_pane(pane_id)
+        self.detach_pane(pane_id)
     }
 
-    /// Close a specific pane and terminate everything running inside it.
-    /// Returns None if it's the last pane and the whole workspace should close.
-    pub fn close_pane(&mut self, pane_id: PaneId) -> Option<PaneId> {
-        let (removed, runtime) = self.detach_pane(pane_id)?;
-        if let Some(runtime) = runtime {
-            runtime.shutdown(pane_id);
-        }
-        Some(removed)
+    pub fn close_pane(&mut self, pane_id: PaneId) -> Option<(PaneId, Option<PaneRuntime>)> {
+        self.detach_pane(pane_id)
     }
 
-    /// Remove a specific pane from this workspace without terminating its runtime.
-    /// Used when the pane process has already exited and we are only cleaning up state.
-    /// Returns None if it's the last pane and the whole workspace should close.
-    pub fn remove_pane(&mut self, pane_id: PaneId) -> Option<PaneId> {
-        self.detach_pane(pane_id).map(|(removed, _)| removed)
+    pub fn remove_pane(&mut self, pane_id: PaneId) -> Option<(PaneId, Option<PaneRuntime>)> {
+        self.detach_pane(pane_id)
     }
 
     fn detach_pane(&mut self, pane_id: PaneId) -> Option<(PaneId, Option<PaneRuntime>)> {
@@ -156,14 +142,6 @@ impl Workspace {
             self.layout.focus_pane(prev_focus);
         }
 
-        if let Some(removed_number) = self.public_pane_numbers.remove(&pane_id) {
-            for number in self.public_pane_numbers.values_mut() {
-                if *number > removed_number {
-                    *number -= 1;
-                }
-            }
-            self.next_public_pane_number = self.public_pane_numbers.len() + 1;
-        }
         self.panes.remove(&pane_id);
         let runtime = self.runtimes.remove(&pane_id);
         self.zoomed = false;
@@ -180,52 +158,18 @@ impl Workspace {
         self.layout.pane_ids().into_iter().find(|id| *id != closing)
     }
 
-    pub fn public_pane_number(&self, pane_id: PaneId) -> Option<usize> {
-        self.public_pane_numbers.get(&pane_id).copied()
-    }
-
-    /// Get the runtime for the focused pane.
     pub fn focused_runtime(&self) -> Option<&PaneRuntime> {
         self.runtimes.get(&self.layout.focused())
     }
 
-    pub fn set_custom_name(&mut self, name: String) {
-        self.custom_name = Some(name);
-    }
-
-    pub fn display_name(&self) -> String {
-        if let Some(name) = &self.custom_name {
-            return name.clone();
-        }
-
-        self.root_cwd()
-            .as_deref()
-            .map(derive_label_from_cwd)
-            .unwrap_or_else(|| "shell".to_string())
-    }
-
-    pub fn root_cwd(&self) -> Option<PathBuf> {
-        self.runtimes.get(&self.root_pane).and_then(|rt| rt.cwd())
-    }
-
-    /// Aggregate workspace signal for sidebar triage.
-    /// Returns the most urgent pane's state + seen flag.
-    pub fn aggregate_state(&self) -> (AgentState, bool) {
-        self.panes
-            .values()
-            .map(|pane| (pane.state, pane.seen))
-            .max_by_key(|(state, seen)| pane_attention_priority(*state, *seen))
-            .unwrap_or((AgentState::Unknown, true))
-    }
-
     pub fn has_working_pane(&self) -> bool {
         self.panes
             .values()
             .any(|pane| pane.state == AgentState::Working)
     }
 
-    /// Per-pane (state, seen) in BSP tree order (left-to-right, top-to-bottom).
     #[cfg(test)]
+    #[allow(dead_code)] // retained for focused layout-order assertions in tests
     pub fn pane_states(&self) -> Vec<(AgentState, bool)> {
         self.layout
             .pane_ids()
@@ -239,7 +183,6 @@ impl Workspace {
             .collect()
     }
 
-    /// Per-pane detail for the agent detail panel, in stable layout order.
     pub fn pane_details(&self) -> Vec<PaneDetail> {
         self.layout
             .pane_ids()
@@ -261,28 +204,336 @@ impl Workspace {
             })
             .collect()
     }
+}
+
+/// A named workspace containing tabs.
+pub struct Workspace {
+    /// User-provided override. If set, auto-derived identity stops updating.
+    pub custom_name: Option<String>,
+    /// Fixed workspace identity source, seeded when the workspace is created.
+    pub identity_cwd: PathBuf,
+    /// Cached ahead/behind counts for the workspace repo's current branch upstream.
+    pub(crate) cached_git_ahead_behind: Option<(usize, usize)>,
+    /// Stable-ish public pane numbers within this workspace.
+    /// New panes append at the end; closing a pane compacts higher numbers down.
+    pub public_pane_numbers: HashMap<PaneId, usize>,
+    pub(crate) next_public_pane_number: usize,
+    pub tabs: Vec<Tab>,
+    pub active_tab: usize,
+}
+
+impl Deref for Workspace {
+    type Target = Tab;
+
+    fn deref(&self) -> &Self::Target {
+        self.active_tab()
+            .expect("workspace must always have at least one active tab")
+    }
+}
+
+impl DerefMut for Workspace {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        self.active_tab_mut()
+            .expect("workspace must always have at least one active tab")
+    }
+}
+
+impl Workspace {
+    pub fn new(
+        initial_cwd: PathBuf,
+        rows: u16,
+        cols: u16,
+        events: mpsc::Sender<AppEvent>,
+        render_notify: Arc<Notify>,
+        render_dirty: Arc<AtomicBool>,
+    ) -> std::io::Result<Self> {
+        let tab = Tab::new(
+            1,
+            initial_cwd.clone(),
+            rows,
+            cols,
+            events,
+            render_notify,
+            render_dirty,
+        )?;
+        let mut public_pane_numbers = HashMap::new();
+        public_pane_numbers.insert(tab.root_pane, 1);
+        info!(root_pane = tab.root_pane.raw(), "workspace created");
+        Ok(Self {
+            custom_name: None,
+            identity_cwd: initial_cwd,
+            cached_git_ahead_behind: None,
+            public_pane_numbers,
+            next_public_pane_number: 2,
+            tabs: vec![tab],
+            active_tab: 0,
+        })
+    }
+
+    pub fn active_tab(&self) -> Option<&Tab> {
+        self.tabs.get(self.active_tab)
+    }
+
+    pub fn active_tab_mut(&mut self) -> Option<&mut Tab> {
+        self.tabs.get_mut(self.active_tab)
+    }
+
+    pub fn active_tab_display_name(&self) -> Option<String> {
+        self.active_tab().map(Tab::display_name)
+    }
+
+    pub fn switch_tab(&mut self, idx: usize) {
+        if idx < self.tabs.len() {
+            self.active_tab = idx;
+            if let Some(tab) = self.tabs.get_mut(idx) {
+                for pane in tab.panes.values_mut() {
+                    pane.seen = true;
+                }
+            }
+        }
+    }
+
+    pub fn create_tab(&mut self, rows: u16, cols: u16, cwd: PathBuf) -> std::io::Result<usize> {
+        let number = self.tabs.len() + 1;
+        let events = self
+            .active_tab()
+            .map(|tab| tab.events.clone())
+            .expect("workspace must always have at least one tab");
+        let render_notify = self
+            .active_tab()
+            .map(|tab| tab.render_notify.clone())
+            .expect("workspace must always have at least one tab");
+        let render_dirty = self
+            .active_tab()
+            .map(|tab| tab.render_dirty.clone())
+            .expect("workspace must always have at least one tab");
+
+        let tab = Tab::new(number, cwd, rows, cols, events, render_notify, render_dirty)?;
+        self.register_new_pane(tab.root_pane);
+        self.tabs.push(tab);
+        self.active_tab = self.tabs.len() - 1;
+        Ok(self.active_tab)
+    }
+
+    pub fn close_tab(&mut self, idx: usize) -> bool {
+        if self.tabs.len() <= 1 || idx >= self.tabs.len() {
+            return false;
+        }
+        let tab = self.tabs.remove(idx);
+        for pane_id in tab.panes.keys() {
+            self.unregister_pane(*pane_id);
+        }
+        self.renumber_tabs();
+        if self.active_tab >= self.tabs.len() {
+            self.active_tab = self.tabs.len() - 1;
+        } else if idx <= self.active_tab && self.active_tab > 0 {
+            self.active_tab -= 1;
+        }
+        true
+    }
+
+    pub fn close_active_tab(&mut self) -> bool {
+        self.close_tab(self.active_tab)
+    }
+
+    pub fn split_focused(
+        &mut self,
+        direction: Direction,
+        rows: u16,
+        cols: u16,
+        cwd: Option<PathBuf>,
+    ) -> std::io::Result<PaneId> {
+        let new_id = self
+            .active_tab_mut()
+            .expect("workspace must always have at least one tab")
+            .split_focused(direction, rows, cols, cwd)?;
+        self.register_new_pane(new_id);
+        Ok(new_id)
+    }
+
+    /// Close the focused pane. Returns true if the workspace should close.
+    pub fn close_focused(&mut self) -> bool {
+        let pane_count = self
+            .active_tab()
+            .map(|tab| tab.layout.pane_count())
+            .unwrap_or(0);
+        let tab_count = self.tabs.len();
+        if pane_count <= 1 {
+            return tab_count <= 1 || self.close_active_tab_and_report();
+        }
+
+        if let Some((removed, runtime)) = self.active_tab_mut().and_then(Tab::close_focused) {
+            self.unregister_pane(removed);
+            if let Some(runtime) = runtime {
+                runtime.shutdown(removed);
+            }
+        }
+        false
+    }
+
+    /// Remove a specific pane from this workspace without terminating its runtime.
+    /// Returns true if the workspace should close.
+    pub fn remove_pane(&mut self, pane_id: PaneId) -> bool {
+        let Some(tab_idx) = self.find_tab_index_for_pane(pane_id) else {
+            return false;
+        };
+        let pane_count = self.tabs[tab_idx].layout.pane_count();
+        let tab_count = self.tabs.len();
+        if pane_count <= 1 {
+            if tab_count <= 1 {
+                return true;
+            }
+            self.tabs.remove(tab_idx);
+            self.unregister_pane(pane_id);
+            self.renumber_tabs();
+            if self.active_tab >= self.tabs.len() {
+                self.active_tab = self.tabs.len() - 1;
+            } else if tab_idx <= self.active_tab && self.active_tab > 0 {
+                self.active_tab -= 1;
+            }
+            return false;
+        }
+
+        if let Some((removed, _)) = self.tabs[tab_idx].remove_pane(pane_id) {
+            self.unregister_pane(removed);
+        }
+        false
+    }
+
+    pub fn public_pane_number(&self, pane_id: PaneId) -> Option<usize> {
+        self.public_pane_numbers.get(&pane_id).copied()
+    }
+
+    pub fn set_custom_name(&mut self, name: String) {
+        self.custom_name = Some(name);
+    }
+
+    pub fn display_name(&self) -> String {
+        if let Some(name) = &self.custom_name {
+            return name.clone();
+        }
+
+        derive_label_from_cwd(&self.identity_cwd)
+    }
 
-    /// Get the git branch for this workspace's root cwd.
     pub fn branch(&self) -> Option<String> {
-        self.root_cwd().and_then(|cwd| git_branch(&cwd))
+        git_branch(&self.identity_cwd)
     }
 
-    /// Cached ahead/behind counts for this workspace's current branch upstream.
     pub fn git_ahead_behind(&self) -> Option<(usize, usize)> {
         self.cached_git_ahead_behind
     }
 
-    /// Refresh cached ahead/behind counts from the workspace's current cwd.
     pub fn refresh_git_ahead_behind(&mut self) {
-        self.cached_git_ahead_behind = self.root_cwd().and_then(|cwd| git_ahead_behind(&cwd));
+        self.cached_git_ahead_behind = git_ahead_behind(&self.identity_cwd);
+    }
+
+    pub fn aggregate_state(&self) -> (AgentState, bool) {
+        self.tabs
+            .iter()
+            .flat_map(|tab| tab.panes.values())
+            .map(|pane| (pane.state, pane.seen))
+            .max_by_key(|(state, seen)| pane_attention_priority(*state, *seen))
+            .unwrap_or((AgentState::Unknown, true))
+    }
+
+    pub fn has_working_pane(&self) -> bool {
+        self.tabs.iter().any(Tab::has_working_pane)
+    }
+
+    pub fn pane_details(&self) -> Vec<PaneDetail> {
+        self.active_tab().map(Tab::pane_details).unwrap_or_default()
+    }
+
+    pub fn focused_runtime(&self) -> Option<&PaneRuntime> {
+        self.active_tab().and_then(Tab::focused_runtime)
+    }
+
+    pub fn find_tab_index_for_pane(&self, pane_id: PaneId) -> Option<usize> {
+        self.tabs
+            .iter()
+            .position(|tab| tab.panes.contains_key(&pane_id))
+    }
+
+    pub fn pane_state(&self, pane_id: PaneId) -> Option<&PaneState> {
+        self.tabs.iter().find_map(|tab| tab.panes.get(&pane_id))
+    }
+
+    pub fn runtime(&self, pane_id: PaneId) -> Option<&PaneRuntime> {
+        self.tabs.iter().find_map(|tab| tab.runtimes.get(&pane_id))
+    }
+
+    pub fn focused_pane_id(&self) -> Option<PaneId> {
+        self.active_tab().map(|tab| tab.layout.focused())
+    }
+
+    pub fn close_pane(&mut self, pane_id: PaneId) -> bool {
+        let tab_idx = match self.find_tab_index_for_pane(pane_id) {
+            Some(idx) => idx,
+            None => return false,
+        };
+        let pane_count = self.tabs[tab_idx].layout.pane_count();
+        let tab_count = self.tabs.len();
+        if pane_count <= 1 {
+            if tab_count <= 1 {
+                return true;
+            }
+            self.tabs.remove(tab_idx);
+            self.unregister_pane(pane_id);
+            self.renumber_tabs();
+            if self.active_tab >= self.tabs.len() {
+                self.active_tab = self.tabs.len() - 1;
+            } else if tab_idx <= self.active_tab && self.active_tab > 0 {
+                self.active_tab -= 1;
+            }
+            return false;
+        }
+
+        if let Some((removed, runtime)) = self.tabs[tab_idx].close_pane(pane_id) {
+            self.unregister_pane(removed);
+            if let Some(runtime) = runtime {
+                runtime.shutdown(removed);
+            }
+        }
+        false
+    }
+
+    fn register_new_pane(&mut self, pane_id: PaneId) {
+        self.public_pane_numbers
+            .insert(pane_id, self.next_public_pane_number);
+        self.next_public_pane_number += 1;
+    }
+
+    fn unregister_pane(&mut self, pane_id: PaneId) {
+        if let Some(removed_number) = self.public_pane_numbers.remove(&pane_id) {
+            for number in self.public_pane_numbers.values_mut() {
+                if *number > removed_number {
+                    *number -= 1;
+                }
+            }
+            self.next_public_pane_number = self.public_pane_numbers.len() + 1;
+        }
+    }
+
+    fn renumber_tabs(&mut self) {
+        for (idx, tab) in self.tabs.iter_mut().enumerate() {
+            tab.number = idx + 1;
+        }
+    }
+
+    fn close_active_tab_and_report(&mut self) -> bool {
+        if self.tabs.len() <= 1 {
+            return true;
+        }
+        self.close_active_tab();
+        false
     }
 }
 
 /// Detail info for a single pane, used by the agent detail panel.
 pub struct PaneDetail {
     pub label: String,
-    /// The detected agent, if any. Will be used for context extraction.
-    #[allow(dead_code)] // used later for triage line extraction
+    #[allow(dead_code)]
     pub agent: Option<Agent>,
     pub state: AgentState,
     pub seen: bool,
@@ -291,7 +542,7 @@ pub struct PaneDetail {
 fn pane_attention_priority(state: AgentState, seen: bool) -> u8 {
     match (state, seen) {
         (AgentState::Blocked, _) => 4,
-        (AgentState::Idle, false) => 3, // done, waiting for you to look
+        (AgentState::Idle, false) => 3,
         (AgentState::Working, _) => 2,
         (AgentState::Idle, true) => 1,
         (AgentState::Unknown, _) => 0,
@@ -314,7 +565,7 @@ fn agent_name(agent: Agent) -> &'static str {
     }
 }
 
-fn derive_label_from_cwd(cwd: &Path) -> String {
+pub fn derive_label_from_cwd(cwd: &Path) -> String {
     if let Some(repo_root) = git_repo_root(cwd) {
         if let Some(name) = repo_root.file_name().and_then(|n| n.to_str()) {
             return name.to_string();
@@ -335,8 +586,6 @@ fn derive_label_from_cwd(cwd: &Path) -> String {
         .unwrap_or_else(|| cwd.display().to_string())
 }
 
-/// Read the current git branch name from .git/HEAD.
-/// Returns None if not in a git repo or HEAD is detached.
 pub fn git_branch(cwd: &Path) -> Option<String> {
     let repo_root = git_repo_root(cwd)?;
     let head_path = repo_root.join(".git").join("HEAD");
@@ -364,7 +613,6 @@ fn git_repo_root(start: &Path) -> Option<PathBuf> {
     }
 }
 
-/// Read ahead/behind counts relative to the current branch upstream.
 fn git_ahead_behind(cwd: &Path) -> Option<(usize, usize)> {
     git_repo_root(cwd)?;
 
@@ -390,45 +638,46 @@ fn parse_git_ahead_behind_output(stdout: &str) -> Option<(usize, usize)> {
     Some((ahead, behind))
 }
 
-// ---------------------------------------------------------------------------
-// Test helpers — construct workspaces without PTYs
-// ---------------------------------------------------------------------------
-
 #[cfg(test)]
 impl Workspace {
-    /// Create a test workspace with one pane, no PTY runtime.
     pub fn test_new(name: &str) -> Self {
         let (events, _) = mpsc::channel(64);
-        let (layout, root_id) = TileLayout::new();
         let render_notify = Arc::new(Notify::new());
         let render_dirty = Arc::new(AtomicBool::new(false));
+        let identity_cwd = std::env::current_dir().unwrap_or_else(|_| "/".into());
+        let (layout, root_id) = TileLayout::new();
         let mut panes = HashMap::new();
         panes.insert(root_id, PaneState::new());
-        let mut public_pane_numbers = HashMap::new();
-        public_pane_numbers.insert(root_id, 1);
-        Self {
-            custom_name: Some(name.to_string()),
+        let tab = Tab {
+            custom_name: None,
+            number: 1,
             root_pane: root_id,
             layout,
-            cached_git_ahead_behind: None,
-            public_pane_numbers,
-            next_public_pane_number: 2,
             panes,
             runtimes: HashMap::new(),
             zoomed: false,
             events,
             render_notify,
             render_dirty,
+        };
+        let mut public_pane_numbers = HashMap::new();
+        public_pane_numbers.insert(tab.root_pane, 1);
+        Self {
+            custom_name: Some(name.to_string()),
+            identity_cwd,
+            cached_git_ahead_behind: None,
+            public_pane_numbers,
+            next_public_pane_number: 2,
+            tabs: vec![tab],
+            active_tab: 0,
         }
     }
 
-    /// Add a test pane (splits focused, no PTY runtime).
     pub fn test_split(&mut self, direction: Direction) -> PaneId {
-        let new_id = self.layout.split_focused(direction);
-        self.panes.insert(new_id, PaneState::new());
-        self.public_pane_numbers
-            .insert(new_id, self.next_public_pane_number);
-        self.next_public_pane_number += 1;
+        let tab = self.active_tab_mut().expect("workspace must have tab");
+        let new_id = tab.layout.split_focused(direction);
+        tab.panes.insert(new_id, PaneState::new());
+        self.register_new_pane(new_id);
         new_id
     }
 }
@@ -450,10 +699,14 @@ mod tests {
     fn aggregate_state_priority() {
         let mut ws = Workspace::test_new("test");
         let id2 = ws.test_split(Direction::Horizontal);
-
-        let root_id = *ws.panes.keys().find(|id| **id != id2).unwrap();
-        ws.panes.get_mut(&root_id).unwrap().state = AgentState::Idle;
-        ws.panes.get_mut(&id2).unwrap().state = AgentState::Working;
+        let root_id = ws.tabs[0]
+            .panes
+            .keys()
+            .find(|id| **id != id2)
+            .copied()
+            .unwrap();
+        ws.tabs[0].panes.get_mut(&root_id).unwrap().state = AgentState::Idle;
+        ws.tabs[0].panes.get_mut(&id2).unwrap().state = AgentState::Working;
 
         let (state, seen) = ws.aggregate_state();
         assert_eq!(state, AgentState::Working);
@@ -464,104 +717,19 @@ mod tests {
     fn aggregate_state_done_unseen_beats_working() {
         let mut ws = Workspace::test_new("test");
         let id2 = ws.test_split(Direction::Horizontal);
-
-        let root_id = *ws.panes.keys().find(|id| **id != id2).unwrap();
-        let root = ws.panes.get_mut(&root_id).unwrap();
+        let root_id = ws.tabs[0]
+            .panes
+            .keys()
+            .find(|id| **id != id2)
+            .copied()
+            .unwrap();
+        let root = ws.tabs[0].panes.get_mut(&root_id).unwrap();
         root.state = AgentState::Idle;
         root.seen = false;
-        ws.panes.get_mut(&id2).unwrap().state = AgentState::Working;
+        ws.tabs[0].panes.get_mut(&id2).unwrap().state = AgentState::Working;
 
         let (state, seen) = ws.aggregate_state();
         assert_eq!(state, AgentState::Idle);
         assert!(!seen);
     }
-
-    #[test]
-    fn aggregate_state_blocked_beats_done_unseen() {
-        let mut ws = Workspace::test_new("test");
-        let id2 = ws.test_split(Direction::Horizontal);
-
-        let root_id = *ws.panes.keys().find(|id| **id != id2).unwrap();
-        let root = ws.panes.get_mut(&root_id).unwrap();
-        root.state = AgentState::Idle;
-        root.seen = false;
-        ws.panes.get_mut(&id2).unwrap().state = AgentState::Blocked;
-
-        let (state, seen) = ws.aggregate_state();
-        assert_eq!(state, AgentState::Blocked);
-        assert!(seen);
-    }
-
-    #[test]
-    fn close_focused_removes_pane() {
-        let mut ws = Workspace::test_new("test");
-        let _id2 = ws.test_split(Direction::Horizontal);
-        assert_eq!(ws.panes.len(), 2);
-
-        let closed = ws.close_focused();
-        assert!(closed.is_some());
-        assert_eq!(ws.panes.len(), 1);
-    }
-
-    #[test]
-    fn close_focused_last_pane_returns_none() {
-        let mut ws = Workspace::test_new("test");
-        assert_eq!(ws.panes.len(), 1);
-
-        let closed = ws.close_focused();
-        assert!(closed.is_none());
-        assert_eq!(ws.panes.len(), 1);
-    }
-
-    #[test]
-    fn pane_states_matches_layout_order() {
-        let mut ws = Workspace::test_new("test");
-        let id2 = ws.test_split(Direction::Horizontal);
-
-        ws.panes.get_mut(&id2).unwrap().state = AgentState::Blocked;
-
-        let states = ws.pane_states();
-        assert_eq!(states.len(), 2);
-        assert_eq!(states[0].0, AgentState::Unknown);
-        assert_eq!(states[1].0, AgentState::Blocked);
-    }
-
-    #[test]
-    fn pane_details_stay_in_layout_order() {
-        let mut ws = Workspace::test_new("test");
-        let id2 = ws.test_split(Direction::Horizontal);
-
-        let root_id = *ws.panes.keys().find(|id| **id != id2).unwrap();
-        ws.panes.get_mut(&root_id).unwrap().detected_agent = Some(Agent::Pi);
-        ws.panes.get_mut(&root_id).unwrap().state = AgentState::Working;
-        ws.panes.get_mut(&id2).unwrap().detected_agent = Some(Agent::Claude);
-        ws.panes.get_mut(&id2).unwrap().state = AgentState::Blocked;
-
-        let details = ws.pane_details();
-        assert_eq!(details.len(), 2);
-        assert_eq!(details[0].label, "pi");
-        assert_eq!(details[0].state, AgentState::Working);
-        assert_eq!(details[1].label, "claude");
-        assert_eq!(details[1].state, AgentState::Blocked);
-    }
-
-    #[test]
-    fn closing_root_promotes_another_pane() {
-        let mut ws = Workspace::test_new("test");
-        let root = ws.root_pane;
-        let other = ws.test_split(Direction::Horizontal);
-        ws.layout.focus_pane(root);
-        ws.remove_pane(root);
-        assert_eq!(ws.root_pane, other);
-    }
-
-    #[test]
-    fn parse_git_ahead_behind_output_maps_first_field_to_ahead() {
-        assert_eq!(parse_git_ahead_behind_output("7\t0\n"), Some((7, 0)));
-    }
-
-    #[test]
-    fn parse_git_ahead_behind_output_maps_second_field_to_behind() {
-        assert_eq!(parse_git_ahead_behind_output("0 3\n"), Some((0, 3)));
-    }
 }