Changeset 0.21.6 (#92)

src/js/app.js

@@ -211,13 +211,25 @@ async function startApp() {
     UI.renderChatList();
     UI.updateModelSelector();
 
-    // Restore last-active chat from sessionStorage (QOL: state restore on refresh)
-    try {
-        const savedChat = sessionStorage.getItem('cs-active-chat');
-        if (savedChat && App.chats.some(c => c.id === savedChat)) {
-            selectChat(savedChat);
-        }
-    } catch (_) {}
+    // Check for workspaces on startup — register editor surface early (v0.21.6)
+    // This ensures the Editor button + Files tab appear without needing to browse first.
+    if (typeof EditorMode !== 'undefined') {
+        try { await EditorMode.checkStartup(); } catch (_) {}
+    }
+
+    // Initialize hash router (v0.21.6) — replaces sessionStorage chat restore.
+    // Reads current URL hash and routes to the right surface/chat/workspace.
+    if (typeof Router !== 'undefined') {
+        Router.init();
+    } else {
+        // Fallback: restore last-active chat from sessionStorage
+        try {
+            const savedChat = sessionStorage.getItem('cs-active-chat');
+            if (savedChat && App.chats.some(c => c.id === savedChat)) {
+                selectChat(savedChat);
+            }
+        } catch (_) {}
+    }
 
     UI.updateUser();
     UI.showAdminButton(API.isAdmin);
@@ -443,6 +455,37 @@ function initListeners() {
     _initPanelSwipe();          // from panels.js — mobile swipe navigation
     _initPanelResponsive();     // from panels.js — auto-collapse dual on resize
     _initPanelOverlay();        // from panels.js — mobile tap-to-close overlay
+    _initSidebarTabs();          // v0.21.6: Chats/Files tab switching
+}
+
+function _initSidebarTabs() {
+    const tabBar = document.getElementById('sidebarTabs');
+    if (!tabBar) return;
+
+    tabBar.addEventListener('click', (e) => {
+        const btn = e.target.closest('.sidebar-tab');
+        if (!btn) return;
+        const tabName = btn.dataset.tab;
+
+        // Update active tab
+        tabBar.querySelectorAll('.sidebar-tab').forEach(t => t.classList.toggle('active', t === btn));
+
+        // Show/hide panels
+        document.querySelectorAll('.sidebar-tab-panel').forEach(p => {
+            p.style.display = p.dataset.tabPanel === tabName ? '' : 'none';
+        });
+    });
+}
+
+/** Show or hide the Files tab. Called by EditorMode on register/unregister. */
+function showSidebarFilesTab(show) {
+    const tab = document.getElementById('sidebarFilesTab');
+    if (tab) tab.style.display = show ? '' : 'none';
+    // If hiding and Files was active, switch back to Chats
+    if (!show && tab?.classList.contains('active')) {
+        const chatsTab = document.querySelector('.sidebar-tab[data-tab="chats"]');
+        if (chatsTab) chatsTab.click();
+    }
 }
 
 function _initGlobalKeyboard() {