Remove provider badge from file list and add upload indicator to right sidebar

- Remove per-provider label from left sidebar file list since files are
  now uploaded to all providers simultaneously
- Add uploading spinner to right sidebar "Upload & Attach" button
- Always upload with provider 'local' from right sidebar settings tab

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2 files changed, 9 insertions, 20 deletions

diff --git a/frontend/src/components/LeftSidebar.tsx b/frontend/src/components/LeftSidebar.tsx
index 5c464bb..54c2527 100644
--- a/frontend/src/components/LeftSidebar.tsx
+++ b/frontend/src/components/LeftSidebar.tsx
@@ -1041,11 +1041,6 @@ const LeftSidebar: React.FC<LeftSidebarProps> = ({ isOpen, onToggle }) => {
                       <span className={`text-[11px] ${isDark ? 'text-gray-500' : 'text-gray-500'}`}>
                         {formatSize(f.size)} • {new Date(f.created_at * 1000).toLocaleString()}
                       </span>
-                      {f.provider && (
-                        <span className={`text-[11px] inline-flex items-center gap-1 mt-0.5 px-2 py-0.5 rounded ${isDark ? 'bg-gray-800 text-gray-300 border border-gray-700' : 'bg-gray-100 text-gray-700 border border-gray-200'}`}>
-                          Provider: {f.provider === 'openai' ? 'OpenAI' : f.provider === 'google' ? 'Gemini' : f.provider}
-                        </span>
-                      )}
                     </div>
                     <div className="flex items-center gap-2">
                       <button
diff --git a/frontend/src/components/Sidebar.tsx b/frontend/src/components/Sidebar.tsx
index 65d5cd2..f3a0679 100644
--- a/frontend/src/components/Sidebar.tsx
+++ b/frontend/src/components/Sidebar.tsx
@@ -38,6 +38,7 @@ const Sidebar: React.FC<SidebarProps> = ({ isOpen, onToggle, onInteract }) => {
   const [showAttachModal, setShowAttachModal] = useState(false);
   const [attachSearch, setAttachSearch] = useState('');
   const settingsUploadRef = useRef<HTMLInputElement>(null);
+  const [settingsUploading, setSettingsUploading] = useState(false);
   
   // Response Modal & Edit states
   const [isModalOpen, setIsModalOpen] = useState(false);
@@ -164,22 +165,15 @@ const Sidebar: React.FC<SidebarProps> = ({ isOpen, onToggle, onInteract }) => {
   const handleUploadAndAttach = async (e: React.ChangeEvent<HTMLInputElement>) => {
     if (!e.target.files || e.target.files.length === 0 || !selectedNode) return;
     const file = e.target.files[0];
+    setSettingsUploading(true);
     try {
-      // Determine provider based on node model
-      const model = selectedNode.data.model;
-      let provider: 'local' | 'openai' | 'google' = 'local';
-      if (model.startsWith('gpt') || model.startsWith('o1') || model.startsWith('o3')) {
-        provider = 'openai';
-      } else if (model.startsWith('gemini')) {
-        provider = 'google';
-      }
-
-      const meta = await uploadFile(file, { provider });
+      const meta = await uploadFile(file, { provider: 'local' });
       handleAttach(meta.id);
     } catch (err) {
       alert(`Upload failed: ${(err as Error).message}`);
     } finally {
       e.target.value = '';
+      setSettingsUploading(false);
     }
   };
 
@@ -1937,16 +1931,16 @@ const Sidebar: React.FC<SidebarProps> = ({ isOpen, onToggle, onInteract }) => {
               <div className="flex gap-2 mb-3">
                 <button
                   onClick={() => settingsUploadRef.current?.click()}
-                  disabled={isGemini}
+                  disabled={isGemini || settingsUploading}
                   className={`flex-1 flex items-center justify-center gap-1.5 py-1.5 px-3 rounded text-xs font-medium transition-colors ${
-                    isGemini
+                    isGemini || settingsUploading
                       ? 'opacity-50 cursor-not-allowed bg-gray-400 text-gray-200'
                       : isDark ? 'bg-blue-600 hover:bg-blue-700 text-white' : 'bg-blue-600 hover:bg-blue-700 text-white'
                   }`}
-                  title={isGemini ? 'Not supported for Gemini models' : 'Upload & Attach'}
+                  title={isGemini ? 'Not supported for Gemini models' : settingsUploading ? 'Uploading...' : 'Upload & Attach'}
                 >
-                  <Upload size={14} />
-                  Upload & Attach
+                  {settingsUploading ? <Loader2 size={14} className="animate-spin" /> : <Upload size={14} />}
+                  {settingsUploading ? 'Uploading...' : 'Upload & Attach'}
                 </button>
                 <input
                   ref={settingsUploadRef}