fix: use fetch API for streaming requests to enable error body reading

Obsidian's requestUrl throws on 4xx errors, making it impossible to read
the error response body. Switching to native fetch API allows proper error
handling and debugging of Codex API 400 errors.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: GoBeromsu

manifest.json

@@ -1,7 +1,7 @@
 {
 	"id": "metadata-auto-classifier",
 	"name": "Metadata Auto Classifier",
-	"version": "1.9.6",
+	"version": "1.9.7",
 	"minAppVersion": "0.15.0",
 	"description": "Automatically classifies and applies metadata to your notes.",
 	"author": "Beomsu Koh",

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "metadata-auto-classifier",
-	"version": "1.9.6",
+	"version": "1.9.7",
 	"description": "Metadata Auto Classifier is an innovative Obsidian plugin that harnesses the power of AI to revolutionize your note-taking experience. By automatically generating and classifying metadata for your notes, this plugin streamlines your workflow and enhances the organization of your knowledge base.",
 	"main": "main.js",
 	"scripts": {

src/provider/request.ts

@@ -107,6 +107,7 @@ const parseSSEEvents = (text: string): SSEEvent[] => {
 /**
  * Send a streaming request and accumulate text from SSE events
  * Uses provider-specific event parser to extract text deltas
+ * Uses fetch API instead of Obsidian's requestUrl for better error handling
  */
 export const sendStreamingRequest = async (
 	url: string,
@@ -124,8 +125,9 @@ export const sendStreamingRequest = async (
 		body,
 	});
 
-	const response = await requestUrl({
-		url,
+	// Use fetch instead of Obsidian's requestUrl for better error handling
+	// requestUrl throws on 4xx errors, making it impossible to read error body
+	const response = await fetch(url, {
 		method: 'POST',
 		headers: {
 			...headers,
@@ -134,17 +136,20 @@ export const sendStreamingRequest = async (
 		body: JSON.stringify(body),
 	});
 
-	if (response.status >= 400) {
+	if (!response.ok) {
+		const errorText = await response.text();
 		console.error('[API Streaming Error]', {
 			status: response.status,
 			url,
-			responseText: response.text,
+			responseText: errorText,
 		});
-		throw new Error(`Streaming request failed (HTTP ${response.status}): ${response.text}`);
+		throw new Error(`Streaming request failed (HTTP ${response.status}): ${errorText}`);
 	}
 
+	const responseText = await response.text();
+
 	// Parse SSE events from response text
-	const events = parseSSEEvents(response.text);
+	const events = parseSSEEvents(responseText);
 	let accumulatedText = '';
 
 	for (const event of events) {

versions.json

@@ -80,5 +80,6 @@
   "1.9.3": "0.15.0",
   "1.9.4": "0.15.0",
   "1.9.5": "0.15.0",
-  "1.9.6": "0.15.0"
+  "1.9.6": "0.15.0",
+  "1.9.7": "0.15.0"
 }