diff --git a/src/main/ai/AiWorker.ts b/src/main/ai/AiWorker.ts
index 73a4b83..76718dc 100644
--- a/src/main/ai/AiWorker.ts
+++ b/src/main/ai/AiWorker.ts
@@ -140,15 +140,18 @@ export class AiWorker {
         const candidates = parseAllCandidates(note.rawText, todayDate);
         const vocab = this.repo.getTopUsedTags(VOCAB_TOP_N);
         // v0.3.1 Cut F — vision path: visionModel + note.media → base64 images
+        // final review fix: note.media[].bytes 로 fast-fail (readFile/base64 비용 회피).
+        // 5MB cap 초과 시 throw → AiWorker 의 'other' 분기 → markAiFailed 도달.
         const visionModel = this.settings ? await this.settings.getVisionModel() : null;
         let images: Array<{ base64: string; mime: string }> | undefined;
         if (visionModel && note.media.length > 0 && this.mediaStore) {
+          const oversize = note.media.find((m) => m.bytes > 5 * 1024 * 1024);
+          if (oversize) {
+            throw new Error(`image ${oversize.relPath} exceeds 5MB cap (${oversize.bytes} bytes)`);
+          }
           images = await Promise.all(
             note.media.map(async (m) => {
               const buf = await readFile(this.mediaStore!.absolutePath(m.relPath));
-              if (buf.byteLength > 5 * 1024 * 1024) {
-                throw new Error(`image ${m.relPath} exceeds 5MB cap`);
-              }
               return { base64: buf.toString('base64'), mime: m.mime };
             })
           );
diff --git a/src/main/ipc/settingsApi.ts b/src/main/ipc/settingsApi.ts
index 8294a11..1214ef5 100644
--- a/src/main/ipc/settingsApi.ts
+++ b/src/main/ipc/settingsApi.ts
@@ -14,6 +14,7 @@ import type { SyncTimer } from '../services/SyncTimer.js';
 import { collectAutostartState } from '../services/AutostartDiagnostic.js';
 import { getInboxWindow as getInboxWindowSingleton } from '../windows/inboxWindow.js';
 import { refreshVisionCache } from '../services/VisionDetect.js';
+import { DEFAULT_OLLAMA_ENDPOINT } from '../../shared/constants.js';
 
 /**
  * 외부 (트레이 / second-instance / 기타 main 프로세스 호출자) 에서 inbox 창에 view 전환을
@@ -395,11 +396,13 @@ export function registerSettingsApi(deps?: SettingsIpcDeps): void {
   });
 
   ipcMain.handle('settings:refresh-vision-cache', async () => {
+    // Cut F final review fix — index.ts 의 resolvedEndpoint (settings → env → default)
+    // 와 동일한 fallback 체인 사용. settings.ollama 미설정 + env / default 만 있는 dev
+    // 환경에서도 manual "다시 감지" 가 동작하도록.
     const all = await deps.settings.getAll();
-    const endpoint = all.ollama?.endpoint;
-    if (!endpoint) {
-      return { ok: false as const, reason: 'no_endpoint' };
-    }
+    const endpoint = all.ollama?.endpoint
+                  ?? process.env.INKLING_OLLAMA_ENDPOINT
+                  ?? DEFAULT_OLLAMA_ENDPOINT;
     return refreshVisionCache({ settings: deps.settings, endpoint });
   });
 }