fix: inspect_page 폴링에서 404 응답을 재시도하도록 수정

검사 시작 직후 결과가 아직 DB에 저장되기 전 404가 반환되면
폴링을 계속하도록 에러 핸들링 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

mcp/src/tools/inspect-page.ts

@@ -13,17 +13,25 @@ export async function inspectPage(
   // 1. Start inspection
   const { inspection_id } = await client.startInspection(url, standard);
 
-  // 2. Poll until completion
+  // 2. Poll until completion (404 = not yet saved, keep polling)
   let result: InspectionResult | null = null;
   for (let i = 0; i < MAX_POLLS; i++) {
     await sleep(POLL_INTERVAL);
-    const data = await client.getInspection(inspection_id);
-    if (data.status === "completed") {
-      result = data;
-      break;
-    }
-    if (data.status === "error") {
-      throw new Error(`Inspection failed for ${url}`);
+    try {
+      const data = await client.getInspection(inspection_id);
+      if (data.status === "completed") {
+        result = data;
+        break;
+      }
+      if (data.status === "error") {
+        throw new Error(`Inspection failed for ${url}`);
+      }
+    } catch (err) {
+      // 404 or transient error — keep polling
+      if (err instanceof Error && err.message.includes("failed")) {
+        continue;
+      }
+      throw err;
     }
   }