Update Mihomo configuration and documentation for clarity

- Revised comments in `config.example.yaml` to enhance understanding of Mihomo integration, including environment variable usage and Docker Compose setup.
- Updated `docker-compose.yml` comments to clarify the relationship between the gateway and Mihomo service.
- Enhanced `GATEWAY_RUN.md` to provide clearer instructions on configuring Mihomo parameters and their usage in the gateway.

web/src/lib/api/client.ts

@@ -28,9 +28,20 @@ export function mihomoWsUrl(alias: string, path: string): string {
 	return `${wsBase}/api/${encodeURIComponent(alias)}/mihomo/${p}`;
 }
 
+async function parseMihomoBody(res: Response): Promise<unknown> {
+	const text = await res.text();
+	if (!text) return null;
+	try {
+		return JSON.parse(text);
+	} catch {
+		const snip = text.length > 200 ? `${text.slice(0, 200)}…` : text;
+		throw new ApiError(`Ответ не JSON (HTTP ${res.status}): ${snip}`, res.status, text);
+	}
+}
+
 export async function fetchMihomoMeta(alias: string): Promise<MihomoMetaResponse> {
 	const res = await fetch(mihomoUrl(alias, 'meta'));
-	const body = (await parseJson(res)) as Record<string, unknown> | null;
+	const body = (await parseMihomoBody(res)) as Record<string, unknown> | null;
 	if (res.status === 404) {
 		throw new ApiError('Mihomo не настроен для этой ноды', 404, body);
 	}
@@ -45,7 +56,7 @@ export async function fetchMihomoMeta(alias: string): Promise<MihomoMetaResponse
 
 export async function fetchMihomoJson<T>(alias: string, path: string): Promise<T> {
 	const res = await fetch(mihomoUrl(alias, path));
-	const body = await parseJson(res);
+	const body = await parseMihomoBody(res);
 	if (res.status === 404) {
 		throw new ApiError('Mihomo не настроен для этой ноды', 404, body);
 	}
@@ -62,11 +73,11 @@ export async function mihomoPut(alias: string, path: string, jsonBody: unknown):
 		body: JSON.stringify(jsonBody)
 	});
 	if (res.status === 404) {
-		const body = await parseJson(res);
+		const body = await parseMihomoBody(res);
 		throw new ApiError('Mihomo не настроен для этой ноды', 404, body);
 	}
 	if (!res.ok) {
-		const body = await parseJson(res);
+		const body = await parseMihomoBody(res);
 		throw new ApiError(`Mihomo PUT HTTP ${res.status}`, res.status, body);
 	}
 }