Phase 5 구현: SQLite DB + History/Dictionary 서비스 + UI

- DB: better-sqlite3 + drizzle-orm (history/dictionary/stats, WAL 모드)
- HistoryService: CRUD + 검색 + 통계 + 30일 보존 정책, 세션 완료 시 자동 저장
- DictionaryService: CRUD + 검색 + 사용 횟수 추적 + STT 프롬프트 힌트
- HistoryPage: 목록 + 검색 + 삭제 + 복사 + 페이지네이션
- DictionaryPage: 목록 + 검색 + 추가 다이얼로그 + 삭제
- DashboardPage: 실데이터 통계 (총/오늘 세션, 시간, 단어수, 연속일수)
- IPC: history/dictionary/stats 핸들러 + preload API
- Bootstrap: DB 초기화 (critical) + 이력 자동 저장 연동

src/preload/index.ts

@@ -47,6 +47,20 @@ import type {
   SetServerUrlParams,
   LLMStatusChangedEvent,
   LLMProcessProgressEvent,
+  HistoryQueryParams,
+  HistoryPage,
+  HistoryGetByIdParams,
+  HistoryEntry,
+  HistoryDeleteParams,
+  HistorySearchParams,
+  DictionaryQueryParams,
+  DictionaryPage,
+  DictionaryEntry,
+  DictionaryAddParams,
+  DictionaryUpdateParams,
+  DictionaryDeleteParams,
+  DictionarySearchParams,
+  StatsSummary,
   PermissionStatus
 } from '@shared/types'
 import type { IPCResult } from '@shared/errors'
@@ -169,6 +183,40 @@ const electronAPI = {
       on(IPC_CHANNELS.LLM.PROCESS_PROGRESS, cb)
   },
 
+  // ── History ────────────────────────────────────────────
+  history: {
+    getAll: (params: HistoryQueryParams) =>
+      invoke<HistoryPage>(IPC_CHANNELS.HISTORY.GET_ALL, params),
+    getById: (params: HistoryGetByIdParams) =>
+      invoke<HistoryEntry | null>(IPC_CHANNELS.HISTORY.GET_BY_ID, params),
+    delete: (params: HistoryDeleteParams) =>
+      invoke<void>(IPC_CHANNELS.HISTORY.DELETE, params),
+    deleteAll: () => invoke<void>(IPC_CHANNELS.HISTORY.DELETE_ALL),
+    search: (params: HistorySearchParams) =>
+      invoke<HistoryPage>(IPC_CHANNELS.HISTORY.SEARCH, params),
+    onAdded: (cb: (e: HistoryEntry) => void): Unsubscribe =>
+      on(IPC_CHANNELS.HISTORY.ADDED, cb)
+  },
+
+  // ── Dictionary ─────────────────────────────────────────
+  dictionary: {
+    getAll: (params: DictionaryQueryParams) =>
+      invoke<DictionaryPage>(IPC_CHANNELS.DICTIONARY.GET_ALL, params),
+    add: (params: DictionaryAddParams) =>
+      invoke<DictionaryEntry>(IPC_CHANNELS.DICTIONARY.ADD, params),
+    update: (params: DictionaryUpdateParams) =>
+      invoke<DictionaryEntry>(IPC_CHANNELS.DICTIONARY.UPDATE, params),
+    delete: (params: DictionaryDeleteParams) =>
+      invoke<void>(IPC_CHANNELS.DICTIONARY.DELETE, params),
+    search: (params: DictionarySearchParams) =>
+      invoke<DictionaryPage>(IPC_CHANNELS.DICTIONARY.SEARCH, params)
+  },
+
+  // ── Stats ──────────────────────────────────────────────
+  stats: {
+    getSummary: () => invoke<StatsSummary>(IPC_CHANNELS.STATS.GET_SUMMARY)
+  },
+
   // ── Window ─────────────────────────────────────────────
   window: {
     minimize: () => send(IPC_CHANNELS.WINDOW.MINIMIZE),