feat: New Chat, moved new chat button, fixed reloading animation to be more user friendly

src/components/UnifiedDataBar/ChatsTab.tsx

@@ -29,7 +29,7 @@ interface ChatsTabProps {
   onSelectChat?: (chatId: string, featureInstanceId: string) => void;
   onDragStart?: (chatId: string, event: React.DragEvent) => void;
   activeWorkflowId?: string;
-  onCreateNew?: () => void;
+  chatListRefreshKey?: number;
   onRenameChat?: (chatId: string, newName: string) => void | Promise<void>;
   onDeleteChat?: (chatId: string) => void | Promise<void>;
 }
@@ -72,7 +72,7 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
   onSelectChat,
   onDragStart,
   activeWorkflowId,
-  onCreateNew,
+  chatListRefreshKey,
   onRenameChat,
   onDeleteChat,
 }) => {
@@ -82,13 +82,14 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
   const [search, setSearch] = useState('');
   const [filter, setFilter] = useState<ChatFilter>('active');
   const [expandedGroups, setExpandedGroups] = useState<Set<string>>(new Set());
-  const [loading, setLoading] = useState(true);
+  const [hasLoadedOnce, setHasLoadedOnce] = useState(false);
   const [editingId, setEditingId] = useState<string | null>(null);
   const [editName, setEditName] = useState('');
   const renameInputRef = useRef<HTMLInputElement>(null);
+  const groupsRef = useRef(groups);
+  groupsRef.current = groups;
 
   const _loadChats = useCallback(async (serverSearch?: string) => {
-    setLoading(true);
     try {
       const params: Record<string, unknown> = { includeArchived: true };
       if (serverSearch) params.search = serverSearch;
@@ -140,7 +141,7 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
     } catch (err) {
       console.error('Failed to load chats:', err);
     } finally {
-      setLoading(false);
+      setHasLoadedOnce(true);
     }
   }, [context.instanceId, t]);
 
@@ -163,6 +164,12 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
     }
   }, [activeWorkflowId]);
 
+  useEffect(() => {
+    if (chatListRefreshKey) {
+      _loadChats();
+    }
+  }, [chatListRefreshKey, _loadChats]);
+
   useEffect(() => {
     if (editingId && renameInputRef.current) {
       renameInputRef.current.focus();
@@ -188,8 +195,18 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
     const trimmed = editName.trim();
     setEditingId(null);
     if (!trimmed || !onRenameChat) return;
-    await onRenameChat(chatId, trimmed);
-    _loadChats();
+    const prev = groupsRef.current;
+    setGroups(gs => gs.map(g => ({
+      ...g,
+      chats: g.chats.map(c => (c.id === chatId ? { ...c, label: trimmed } : c)),
+    })));
+    try {
+      await onRenameChat(chatId, trimmed);
+      _loadChats();
+    } catch (err) {
+      console.error('Failed to rename chat:', err);
+      setGroups(prev);
+    }
   };
 
   const _handleRenameKeyDown = (e: React.KeyboardEvent, chatId: string) => {
@@ -201,23 +218,41 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
     }
   };
 
+  const _setChatStatus = useCallback((chatId: string, status: string) => {
+    setGroups(gs => gs.map(g => ({
+      ...g,
+      chats: g.chats.map(c => (c.id === chatId ? { ...c, status } : c)),
+    })));
+  }, []);
+
+  const _removeChat = useCallback((chatId: string) => {
+    setGroups(gs => gs.map(g => ({
+      ...g,
+      chats: g.chats.filter(c => c.id !== chatId),
+    })).filter(g => g.chats.length > 0));
+  }, []);
+
   const _archiveChat = useCallback(async (chatId: string) => {
+    const prev = groupsRef.current;
+    _setChatStatus(chatId, 'archived');
     try {
       await api.patch(`/api/workspace/${context.instanceId}/workflows/${chatId}`, { status: 'archived' });
-      _loadChats();
     } catch (err) {
       console.error('Failed to archive chat:', err);
+      setGroups(prev);
     }
-  }, [context.instanceId, _loadChats]);
+  }, [context.instanceId, _setChatStatus]);
 
   const _restoreChat = useCallback(async (chatId: string) => {
+    const prev = groupsRef.current;
+    _setChatStatus(chatId, 'active');
     try {
       await api.patch(`/api/workspace/${context.instanceId}/workflows/${chatId}`, { status: 'active' });
-      _loadChats();
     } catch (err) {
       console.error('Failed to restore chat:', err);
+      setGroups(prev);
     }
-  }, [context.instanceId, _loadChats]);
+  }, [context.instanceId, _setChatStatus]);
 
   const _isArchived = (chat: ChatItem) => chat.status === 'archived';
 
@@ -311,7 +346,17 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
               {onDeleteChat && (
                 <button
                   className={`${styles.actionBtn} ${styles.actionBtnDanger}`}
-                  onClick={async (e) => { e.stopPropagation(); await onDeleteChat(chat.id); _loadChats(); }}
+                  onClick={async (e) => {
+                    e.stopPropagation();
+                    const prev = groupsRef.current;
+                    _removeChat(chat.id);
+                    try {
+                      await onDeleteChat(chat.id);
+                    } catch (err) {
+                      console.error('Failed to delete chat:', err);
+                      setGroups(prev);
+                    }
+                  }}
                   title={t('Löschen')}
                 >
                   🗑️
@@ -334,8 +379,6 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
     return labels[code] || code;
   };
 
-  if (loading) return <div className={styles.loading}>{t('Chats werden geladen…')}</div>;
-
   return (
     <div className={styles.chatsTab}>
       <div className={styles.toolbar}>
@@ -346,11 +389,6 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
           value={search}
           onChange={(e) => setSearch(e.target.value)}
         />
-        {onCreateNew && (
-          <button className={styles.createBtn} onClick={() => { onCreateNew(); setTimeout(_loadChats, 500); }} title={t('Neuer Chat')}>
-            +
-          </button>
-        )}
         <button
           className={`${styles.modeToggle} ${flatMode ? styles.modeActive : ''}`}
           onClick={() => setFlatMode(!flatMode)}
@@ -437,7 +475,7 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
         </div>
       )}
 
-      {_allChats.length === 0 && (
+      {hasLoadedOnce && _allChats.length === 0 && (
         <div className={styles.emptyState}>
           {filter === 'archived' ? t('Keine archivierten Chats') : t('Keine aktiven Chats')}
         </div>

src/components/UnifiedDataBar/UnifiedDataBar.tsx

@@ -47,8 +47,8 @@ interface UnifiedDataBarProps {
   hideTabs?: UdbTab[];
   onSelectChat?: (chatId: string, featureInstanceId: string) => void;
   activeWorkflowId?: string;
-  onCreateNewChat?: () => void;
   onRenameChat?: (chatId: string, newName: string) => void;
+  chatListRefreshKey?: number;
   onDeleteChat?: (chatId: string) => void;
   onChatDragStart?: (chatId: string, event: React.DragEvent) => void;
   onFileSelect?: (fileId: string, fileName?: string) => void;
@@ -78,8 +78,8 @@ const UnifiedDataBar: React.FC<UnifiedDataBarProps> = ({
   hideTabs,
   onSelectChat,
   activeWorkflowId,
-  onCreateNewChat,
   onRenameChat,
+  chatListRefreshKey,
   onDeleteChat,
   onChatDragStart,
   onFileSelect,
@@ -122,7 +122,7 @@ const UnifiedDataBar: React.FC<UnifiedDataBarProps> = ({
             onSelectChat={onSelectChat}
             onDragStart={onChatDragStart}
             activeWorkflowId={activeWorkflowId}
-            onCreateNew={onCreateNewChat}
+            chatListRefreshKey={chatListRefreshKey}
             onRenameChat={onRenameChat}
             onDeleteChat={onDeleteChat}
           />

src/pages/views/workspace/WorkspacePage.tsx

@@ -94,6 +94,7 @@ export const WorkspacePage: React.FC<WorkspacePageProps> = ({ persistentInstance
   );
   const [mobileLeftOpen, setMobileLeftOpen] = useState(false);
   const [mobileRightOpen, setMobileRightOpen] = useState(false);
+  const [chatListRefreshKey, setChatListRefreshKey] = useState(0);
 
   useEffect(() => {
     const _handleResize = () => {
@@ -254,6 +255,27 @@ export const WorkspacePage: React.FC<WorkspacePageProps> = ({ persistentInstance
     workspace.loadWorkflow(wfId);
   };
 
+  const sidebarHeaderBtnStyle: React.CSSProperties = {
+    background: 'none',
+    border: 'none',
+    cursor: 'pointer',
+    fontSize: 14,
+    color: '#888',
+  };
+
+  const createChatBtnStyle: React.CSSProperties = {
+    ...sidebarHeaderBtnStyle,
+    fontSize: 20,
+    fontWeight: 700,
+    lineHeight: 1,
+    color: 'var(--text-secondary, #555)',
+  };
+
+  const _handleCreateNewChat = useCallback(() => {
+    workspace.resetToNew();
+    setChatListRefreshKey(k => k + 1);
+  }, [workspace]);
+
   const tabButtonStyle = (active: boolean): React.CSSProperties => ({
     flex: 1,
     padding: '6px 0',
@@ -356,7 +378,7 @@ export const WorkspacePage: React.FC<WorkspacePageProps> = ({ persistentInstance
       onTabChange={setUdbTab}
       onSelectChat={_handleConversationSelect}
       activeWorkflowId={workspace.workflowId ?? undefined}
-      onCreateNewChat={workspace.resetToNew}
+      chatListRefreshKey={chatListRefreshKey}
       onRenameChat={_handleRenameChat}
       onDeleteChat={_handleDeleteChat}
       onFileSelect={_handleFileSelect}
@@ -408,7 +430,10 @@ export const WorkspacePage: React.FC<WorkspacePageProps> = ({ persistentInstance
         }}>
           <div style={{ padding: '6px 12px', borderBottom: '1px solid var(--border-color, #e0e0e0)', display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
             <span style={{ fontWeight: 600, fontSize: 14 }}>{t('Workspace')}</span>
-            <button onClick={() => setLeftCollapsed(true)} style={{ background: 'none', border: 'none', cursor: 'pointer', fontSize: 14, color: '#888' }}>◀</button>
+            <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+              <button onClick={_handleCreateNewChat} style={createChatBtnStyle} title={t('Neuer Chat')}>+</button>
+              <button onClick={() => setLeftCollapsed(true)} style={sidebarHeaderBtnStyle}>◀</button>
+            </div>
           </div>
           {_leftPanelBody}
         </aside>
@@ -604,7 +629,10 @@ export const WorkspacePage: React.FC<WorkspacePageProps> = ({ persistentInstance
           >
             <div style={{ padding: '10px 12px', borderBottom: '1px solid var(--border-color, #e0e0e0)', display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
               <span style={{ fontWeight: 600, fontSize: 14 }}>{t('Workspace')}</span>
-              <button onClick={() => setMobileLeftOpen(false)} style={{ background: 'none', border: 'none', cursor: 'pointer', fontSize: 18, color: '#666' }}>×</button>
+              <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+                <button onClick={_handleCreateNewChat} style={createChatBtnStyle} title={t('Neuer Chat')}>+</button>
+                <button onClick={() => setMobileLeftOpen(false)} style={{ background: 'none', border: 'none', cursor: 'pointer', fontSize: 18, color: '#666' }}>×</button>
+              </div>
             </div>
             {_leftPanelBody}
           </aside>