feat: Agent Orchestrator — multi-project agent dashboard

Tauri + Svelte 5 + Rust application for orchestrating multiple AI coding agents.
Includes Claude, Aider, Codex, and Ollama provider support, multi-agent
communication (btmsg/bttask), session anchors, plugin sandbox, FTS5 search,
Landlock sandboxing, and 507 vitest + 110 cargo tests.

src-tauri/src/commands/session.rs

@@ -0,0 +1,81 @@
+use tauri::State;
+use crate::AppState;
+use crate::session::{Session, LayoutState, SshSession};
+
+// --- Session persistence ---
+
+#[tauri::command]
+pub fn session_list(state: State<'_, AppState>) -> Result<Vec<Session>, String> {
+    state.session_db.list_sessions()
+}
+
+#[tauri::command]
+pub fn session_save(state: State<'_, AppState>, session: Session) -> Result<(), String> {
+    state.session_db.save_session(&session)
+}
+
+#[tauri::command]
+pub fn session_delete(state: State<'_, AppState>, id: String) -> Result<(), String> {
+    state.session_db.delete_session(&id)
+}
+
+#[tauri::command]
+pub fn session_update_title(state: State<'_, AppState>, id: String, title: String) -> Result<(), String> {
+    state.session_db.update_title(&id, &title)
+}
+
+#[tauri::command]
+pub fn session_touch(state: State<'_, AppState>, id: String) -> Result<(), String> {
+    state.session_db.touch_session(&id)
+}
+
+#[tauri::command]
+pub fn session_update_group(state: State<'_, AppState>, id: String, group_name: String) -> Result<(), String> {
+    state.session_db.update_group(&id, &group_name)
+}
+
+// --- Layout ---
+
+#[tauri::command]
+pub fn layout_save(state: State<'_, AppState>, layout: LayoutState) -> Result<(), String> {
+    state.session_db.save_layout(&layout)
+}
+
+#[tauri::command]
+pub fn layout_load(state: State<'_, AppState>) -> Result<LayoutState, String> {
+    state.session_db.load_layout()
+}
+
+// --- Settings ---
+
+#[tauri::command]
+pub fn settings_get(state: State<'_, AppState>, key: String) -> Result<Option<String>, String> {
+    state.session_db.get_setting(&key)
+}
+
+#[tauri::command]
+pub fn settings_set(state: State<'_, AppState>, key: String, value: String) -> Result<(), String> {
+    state.session_db.set_setting(&key, &value)
+}
+
+#[tauri::command]
+pub fn settings_list(state: State<'_, AppState>) -> Result<Vec<(String, String)>, String> {
+    state.session_db.get_all_settings()
+}
+
+// --- SSH sessions ---
+
+#[tauri::command]
+pub fn ssh_session_list(state: State<'_, AppState>) -> Result<Vec<SshSession>, String> {
+    state.session_db.list_ssh_sessions()
+}
+
+#[tauri::command]
+pub fn ssh_session_save(state: State<'_, AppState>, session: SshSession) -> Result<(), String> {
+    state.session_db.save_ssh_session(&session)
+}
+
+#[tauri::command]
+pub fn ssh_session_delete(state: State<'_, AppState>, id: String) -> Result<(), String> {
+    state.session_db.delete_ssh_session(&id)
+}