fix: correct OAuth path default behavior on blur

- Changed value prop to show empty string instead of default path
- Default path only appears as placeholder
- On blur, if field is empty, it sets the default path in config
- Removed redundant element.value assignment in handleBlur

This prevents the default path from immediately appearing while typing/deleting

Author: daniel-lxs

webview-ui/src/components/settings/providers/QwenCode.tsx

@@ -8,11 +8,21 @@ interface QwenCodeProps {
 }
 
 export const QwenCode: React.FC<QwenCodeProps> = ({ apiConfiguration, setApiConfigurationField }) => {
+	const defaultPath = "~/.qwen/oauth_creds.json"
+
 	const handleInputChange = (e: Event | React.FormEvent<HTMLElement>) => {
 		const element = e.target as HTMLInputElement
 		setApiConfigurationField("qwenCodeOauthPath", element.value)
 	}
 
+	const handleBlur = (e: Event | React.FormEvent<HTMLElement>) => {
+		const element = e.target as HTMLInputElement
+		// If the field is empty on blur, set it to the default value
+		if (!element.value || element.value.trim() === "") {
+			setApiConfigurationField("qwenCodeOauthPath", defaultPath)
+		}
+	}
+
 	return (
 		<div className="flex flex-col gap-4">
 			<div>
@@ -21,7 +31,8 @@ export const QwenCode: React.FC<QwenCodeProps> = ({ apiConfiguration, setApiConf
 					style={{ width: "100%", marginTop: 3 }}
 					type="text"
 					onInput={handleInputChange}
-					placeholder="~/.qwen/oauth_creds.json">
+					onBlur={handleBlur}
+					placeholder={defaultPath}>
 					OAuth Credentials Path
 				</VSCodeTextField>
 
@@ -31,7 +42,7 @@ export const QwenCode: React.FC<QwenCodeProps> = ({ apiConfiguration, setApiConf
 						marginTop: 3,
 						color: "var(--vscode-descriptionForeground)",
 					}}>
-					Path to your Qwen OAuth credentials file. Use ~/.qwen/oauth_creds.json or provide a custom path.
+					Path to your Qwen OAuth credentials file. Defaults to ~/.qwen/oauth_creds.json if left empty.
 				</p>
 
 				<div style={{ fontSize: "12px", color: "var(--vscode-descriptionForeground)", marginTop: "12px" }}>