feat: add ecc2 global rebalance controls

ecc2/src/main.rs

@@ -90,6 +90,18 @@ enum Commands {
         #[arg(long, default_value_t = 10)]
         lead_limit: usize,
     },
+    /// Rebalance unread handoffs across lead teams with backed-up delegates
+    RebalanceAll {
+        /// Agent type for routed delegates
+        #[arg(short, long, default_value = "claude")]
+        agent: String,
+        /// Create a dedicated worktree if new delegates must be spawned
+        #[arg(short, long, default_value_t = true)]
+        worktree: bool,
+        /// Maximum lead sessions to sweep in one pass
+        #[arg(long, default_value_t = 10)]
+        lead_limit: usize,
+    },
     /// Rebalance unread handoffs off backed-up delegates onto clearer team capacity
     RebalanceTeam {
         /// Lead session ID or alias
@@ -337,6 +349,38 @@ async fn main() -> Result<()> {
                 }
             }
         }
+        Some(Commands::RebalanceAll {
+            agent,
+            worktree: use_worktree,
+            lead_limit,
+        }) => {
+            let outcomes = session::manager::rebalance_all_teams(
+                &db,
+                &cfg,
+                &agent,
+                use_worktree,
+                lead_limit,
+            )
+            .await?;
+            if outcomes.is_empty() {
+                println!("No delegate backlog needed global rebalancing");
+            } else {
+                let total_rerouted: usize =
+                    outcomes.iter().map(|outcome| outcome.rerouted.len()).sum();
+                println!(
+                    "Rebalanced {} task handoff(s) across {} lead session(s)",
+                    total_rerouted,
+                    outcomes.len()
+                );
+                for outcome in outcomes {
+                    println!(
+                        "- {} | rerouted {}",
+                        short_session(&outcome.lead_session_id),
+                        outcome.rerouted.len()
+                    );
+                }
+            }
+        }
         Some(Commands::RebalanceTeam {
             session_id,
             agent,
@@ -747,6 +791,31 @@ mod tests {
         }
     }
 
+    #[test]
+    fn cli_parses_rebalance_all_command() {
+        let cli = Cli::try_parse_from([
+            "ecc",
+            "rebalance-all",
+            "--agent",
+            "claude",
+            "--lead-limit",
+            "6",
+        ])
+        .expect("rebalance-all should parse");
+
+        match cli.command {
+            Some(Commands::RebalanceAll {
+                agent,
+                lead_limit,
+                ..
+            }) => {
+                assert_eq!(agent, "claude");
+                assert_eq!(lead_limit, 6);
+            }
+            _ => panic!("expected rebalance-all subcommand"),
+        }
+    }
+
     #[test]
     fn cli_parses_rebalance_team_command() {
         let cli = Cli::try_parse_from([

ecc2/src/tui/app.rs

@@ -41,6 +41,7 @@ pub async fn run(db: StateStore, cfg: Config) -> Result<()> {
                     (_, KeyCode::Char('n')) => dashboard.new_session().await,
                     (_, KeyCode::Char('a')) => dashboard.assign_selected().await,
                     (_, KeyCode::Char('b')) => dashboard.rebalance_selected_team().await,
+                    (_, KeyCode::Char('B')) => dashboard.rebalance_all_teams().await,
                     (_, KeyCode::Char('i')) => dashboard.drain_inbox_selected().await,
                     (_, KeyCode::Char('g')) => dashboard.auto_dispatch_backlog().await,
                     (_, KeyCode::Char('p')) => dashboard.toggle_auto_dispatch_policy(),

ecc2/src/tui/dashboard.rs

@@ -407,7 +407,7 @@ impl Dashboard {
 
     fn render_status_bar(&self, frame: &mut Frame, area: Rect) {
         let text = format!(
-            " [n]ew session  [a]ssign  re[b]alance  dra[i]n inbox  [g]lobal dispatch  toggle [p]olicy  [,/.] dispatch limit  [s]top  [u]resume  [x]cleanup  [d]elete  [r]efresh  [Tab] switch pane  [j/k] scroll  [+/-] resize  [{}] layout  [?] help  [q]uit ",
+            " [n]ew session  [a]ssign  re[b]alance  global re[B]alance  dra[i]n inbox  [g]lobal dispatch  toggle [p]olicy  [,/.] dispatch limit  [s]top  [u]resume  [x]cleanup  [d]elete  [r]efresh  [Tab] switch pane  [j/k] scroll  [+/-] resize  [{}] layout  [?] help  [q]uit ",
             self.layout_label()
         );
         let text = if let Some(note) = self.operator_note.as_ref() {
@@ -454,6 +454,7 @@ impl Dashboard {
             "  n       New session",
             "  a       Assign follow-up work from selected session",
             "  b       Rebalance backed-up delegate inboxes for selected lead",
+            "  B       Rebalance backed-up delegate inboxes across lead teams",
             "  i       Drain unread task handoffs from selected session inbox",
             "  g       Auto-dispatch unread handoffs across lead sessions",
             "  p       Toggle daemon auto-dispatch policy and persist config",
@@ -840,6 +841,52 @@ impl Dashboard {
         }
     }
 
+    pub async fn rebalance_all_teams(&mut self) {
+        let agent = self.cfg.default_agent.clone();
+        let lead_limit = self.sessions.len().max(1);
+
+        let outcomes = match manager::rebalance_all_teams(
+            &self.db,
+            &self.cfg,
+            &agent,
+            true,
+            lead_limit,
+        )
+        .await
+        {
+            Ok(outcomes) => outcomes,
+            Err(error) => {
+                tracing::warn!("Failed to rebalance teams from dashboard: {error}");
+                self.set_operator_note(format!("global rebalance failed: {error}"));
+                return;
+            }
+        };
+
+        let total_rerouted: usize = outcomes.iter().map(|outcome| outcome.rerouted.len()).sum();
+        let selected_session_id = self
+            .sessions
+            .get(self.selected_session)
+            .map(|session| session.id.clone());
+
+        self.refresh();
+        self.sync_selection_by_id(selected_session_id.as_deref());
+        self.sync_selected_output();
+        self.sync_selected_diff();
+        self.sync_selected_messages();
+        self.sync_selected_lineage();
+        self.refresh_logs();
+
+        if total_rerouted == 0 {
+            self.set_operator_note("no delegate backlog needed global rebalancing".to_string());
+        } else {
+            self.set_operator_note(format!(
+                "rebalanced {} handoff(s) across {} lead session(s)",
+                total_rerouted,
+                outcomes.len()
+            ));
+        }
+    }
+
     pub async fn stop_selected(&mut self) {
         let Some(session) = self.sessions.get(self.selected_session) else {
             return;
@@ -2365,6 +2412,38 @@ mod tests {
         Ok(())
     }
 
+    #[tokio::test]
+    async fn rebalance_all_teams_sets_operator_note_when_clear() -> Result<()> {
+        let db_path = std::env::temp_dir().join(format!("ecc2-dashboard-{}.db", Uuid::new_v4()));
+        let db = StateStore::open(&db_path)?;
+        let now = Utc::now();
+
+        db.insert_session(&Session {
+            id: "lead-1".to_string(),
+            task: "coordinate".to_string(),
+            agent_type: "claude".to_string(),
+            working_dir: PathBuf::from("/tmp"),
+            state: SessionState::Running,
+            pid: None,
+            worktree: None,
+            created_at: now,
+            updated_at: now,
+            metrics: SessionMetrics::default(),
+        })?;
+
+        let dashboard_store = StateStore::open(&db_path)?;
+        let mut dashboard = Dashboard::new(dashboard_store, Config::default());
+        dashboard.rebalance_all_teams().await;
+
+        assert_eq!(
+            dashboard.operator_note.as_deref(),
+            Some("no delegate backlog needed global rebalancing")
+        );
+
+        let _ = std::fs::remove_file(db_path);
+        Ok(())
+    }
+
     #[test]
     fn grid_layout_renders_four_panes() {
         let mut dashboard = test_dashboard(vec![sample_session("grid-1", "claude", SessionState::Running, None, 1, 1)], 0);