fix: show error state on name field instead of toast when empty

Author: ammar-agent

src/browser/components/ChatInput/useCreationWorkspace.ts

@@ -152,13 +152,9 @@ export function useCreationWorkspace({
 
       try {
         // Wait for name generation to complete (blocks if still in progress)
+        // Returns empty string if generation failed or manual name is empty (error already set in hook)
         const workspaceName = await waitForGeneration();
         if (!workspaceName) {
-          setToast({
-            id: Date.now().toString(),
-            type: "error",
-            message: "Failed to generate workspace name. Please enter a name manually.",
-          });
           setIsSending(false);
           return false;
         }

src/browser/hooks/useWorkspaceName.ts

@@ -166,8 +166,12 @@ export function useWorkspaceName(options: UseWorkspaceNameOptions): UseWorkspace
   }, []);
 
   const waitForGeneration = useCallback(async (): Promise<string> => {
-    // If auto-generate is off, return the manual name
+    // If auto-generate is off, return the manual name (or set error if empty)
     if (!autoGenerate) {
+      if (!manualName.trim()) {
+        setError("Please enter a workspace name");
+        return "";
+      }
       return manualName;
     }