refactor(v032): KST_OFFSET_MS inline → @shared/util/kstDate import (#19)

5 callsite (NoteRepository, ftsHelpers, BackupService, ContinuityService,
NoteCard) 모두 canonical export 로 정리. 알고리즘 동일 (9 * 60 * 60 * 1000),
회귀 PASS 검증.

v0.2.6 commit 3cfa60b 가 4 callsite migrate 했지만 5 callsite 잔여.
Cut F audit 에서 발견.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/main/repository/NoteRepository.ts

@@ -1,7 +1,7 @@
 import type Database from 'better-sqlite3';
 import { v7 as uuidv7, v4 as uuidv4 } from 'uuid';
 import type { AiStatus, Note, NoteMedia, NoteRevision, NoteStatus, NoteTag } from '@shared/types';
-import { kstTodayIso } from '../../shared/util/kstDate.js';
+import { kstTodayIso, KST_OFFSET_MS } from '../../shared/util/kstDate.js';
 import { sanitizeFtsQuery, computeCutoff, type ReviewPeriod } from './ftsHelpers.js';
 
 export interface CreateNoteInput {
@@ -1039,7 +1039,6 @@ export class NoteRepository {
    * and count rows whose UTC ISO `created_at` lies inside.
    */
   countToday(now: Date = new Date()): number {
-    const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
     const kstNow = new Date(now.getTime() + KST_OFFSET_MS);
     const kstYear = kstNow.getUTCFullYear();
     const kstMonth = kstNow.getUTCMonth();

src/main/repository/ftsHelpers.ts

@@ -2,6 +2,8 @@
  * v0.2.11 Cut D — FTS5 검색 + 회고 view 의 순수 함수 헬퍼.
  */
 
+import { KST_OFFSET_MS } from '../../shared/util/kstDate.js';
+
 const FTS5_SPECIAL_CHARS_RE = /["*():]/g;
 const WS_COLLAPSE_RE = /\s+/g;
 
@@ -15,8 +17,6 @@ export function sanitizeFtsQuery(input: string): string {
 
 export type ReviewPeriod = 'daily' | 'weekly' | 'monthly';
 
-const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
-
 /**
  * 회고 cutoff = period 시작점의 KST 자정 (UTC ISO).
  * daily = 오늘 0시, weekly = 7일 전 0시, monthly = 30일 전 0시.

src/main/services/BackupService.ts

@@ -2,8 +2,7 @@ import type Database from 'better-sqlite3';
 import { mkdir, rename, stat, readdir, unlink, readFile, writeFile } from 'node:fs/promises';
 import { join } from 'node:path';
 import { applyGfsRetention } from './backupRotation.js';
-
-const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
+import { KST_OFFSET_MS } from '../../shared/util/kstDate.js';
 const MARKER_FILENAME = '.last-snapshot';
 
 function toKstDateKey(d: Date): string {

src/main/services/ContinuityService.ts

@@ -1,7 +1,6 @@
 import type Database from 'better-sqlite3';
 import type { WeeklyContinuity } from '@shared/types';
-
-const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
+import { KST_OFFSET_MS } from '../../shared/util/kstDate.js';
 const ONE_DAY_MS = 24 * 60 * 60 * 1000;
 const WEEK_TARGET = 7;
 const RECOVERY_GAP_DAYS = 7;

src/renderer/inbox/components/NoteCard.tsx

@@ -1,5 +1,6 @@
 import React, { useState } from 'react';
 import type { Note, NoteStatus } from '@shared/types';
+import { KST_OFFSET_MS } from '@shared/util/kstDate.js';
 import { inboxApi } from '../api.js';
 import { useInbox } from '../store.js';
 import { EditableField } from './EditableField.js';
@@ -27,7 +28,6 @@ function isPastDue(iso: string, today: string): boolean {
 }
 
 function todayKstIso(): string {
-  const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
   const k = new Date(Date.now() + KST_OFFSET_MS);
   return k.toISOString().slice(0, 10);
 }