Desktop: - No Custom Headers field for custom OpenAI-compatible providers (#6681)

Signed-off-by: Lymah123 <fimihanodunola625@gmail.com>
Co-authored-by: Zane Staggs <zane@squareup.com>

ui/desktop/src/components/settings/extensions/modal/ExtensionModal.tsx

@@ -156,6 +156,19 @@ export default function ExtensionModal({
   };
 
   const handleHeaderChange = (index: number, field: 'key' | 'value', value: string) => {
+    if (field === 'key') {
+      if (value.includes(' ')) {
+        return;
+      }
+      const trimmedNewKey = value.trim();
+      const normalizedNewKey = trimmedNewKey.toLowerCase();
+      const isDuplicate = formData.headers.some(
+        (h, i) => i !== index && h.key.trim().toLowerCase() === normalizedNewKey,
+      );
+      if (isDuplicate && trimmedNewKey !== '') {
+        return;
+      }
+    }
     const newHeaders = [...formData.headers];
     newHeaders[index][field] = value;
 

ui/desktop/src/components/settings/extensions/modal/HeadersSection.tsx

@@ -44,6 +44,10 @@ export default function HeadersSection({
     const keyEmpty = !newKey.trim();
     const valueEmpty = !newValue.trim();
     const keyHasSpaces = newKey.includes(' ');
+    const normalizedNewKey = newKey.trim().toLowerCase();
+    const isDuplicate = headers.some(
+      h => h.key.trim().toLowerCase() === normalizedNewKey
+    );
 
     if (keyEmpty || valueEmpty) {
       setInvalidFields({
@@ -63,6 +67,15 @@ export default function HeadersSection({
       return;
     }
 
+    if (isDuplicate) {
+      setInvalidFields({
+        key: true,
+        value: false,
+      });
+      setValidationError('A header with this name already exists');
+      return;
+    }
+
     setValidationError(null);
     setInvalidFields({ key: false, value: false });
     onAdd(newKey, newValue);

ui/desktop/src/components/settings/extensions/utils.ts

@@ -100,8 +100,8 @@ export function extensionToFormData(extension: FixedExtensionEntry): ExtensionFo
     description: extension.description || '',
     type:
       extension.type === 'frontend' ||
-      extension.type === 'inline_python' ||
-      extension.type === 'platform'
+        extension.type === 'inline_python' ||
+        extension.type === 'platform'
         ? 'stdio'
         : extension.type,
     cmd: extension.type === 'stdio' ? quoteShell([extension.cmd, ...extension.args]) : undefined,
@@ -155,7 +155,7 @@ export function createExtensionConfig(formData: ExtensionFormData): ExtensionCon
       timeout: formData.timeout,
       uri: formData.endpoint || '',
       ...(env_keys.length > 0 ? { env_keys } : {}),
-      ...(Object.keys(headers).length > 0 ? { headers } : {}),
+      headers,
     };
   } else {
     // For other types