feat(V2-1b): packages/core 추출 — 공유 타입/에러/채널/유틸 분리

packages/core (@d3ro/core) 신규 생성:
- types.ts, errors.ts, ipc-channels.ts, constants.ts (shared에서 이동)
- utils/meeting-markdown.ts, utils/markdown-to-docx.ts (main/utils에서 이동)
- subpath exports 정의 (./types, ./errors, ./ipc-channels, ./constants,
  ./utils/meeting-markdown, ./utils/markdown-to-docx)
- src/index.ts barrel export 추가
- docx를 core 자체 dependency로 선언

apps/desktop 연결:
- package.json에 @d3ro/core: '*' dep 추가
- tsconfig.node/web.json paths에 @d3ro/core/* 추가
- electron.vite.config.ts 3개 섹션 alias 추가 (main/preload/renderer)
- externalizeDepsPlugin exclude에 @d3ro/core (workspace 소스 번들 대상)
- vitest.config.ts alias 추가

일괄 치환 (79 파일, 167건):
- @shared/{types,errors,ipc-channels,constants} → @d3ro/core/*
- static/dynamic import + type expression import 모두 포함
- MeetingModeService.ts의 ../utils/* 상대 경로 → @d3ro/core/utils/*
- @shared/theme-vars는 V2-1c 범위로 남김 (WindowManager만 사용)

M1 수정 포함:
- electron.vite.config.ts의 resolve('src/shared') → resolve(__dirname, ...)
  CWD 독립적으로 동작하도록 견고화

검증:
- typecheck 통과
- build 통과 (main+preload+renderer)
- dev 런타임 → DB/핫키/Ollama 모두 정상, 기존 데이터 연속성 유지

apps/desktop/src/renderer/pages/CommandsPage.tsx

@@ -15,7 +15,7 @@ import { PageHeader, EmptyStateCard } from '../components/shared'
 import { d3roPalette, d3roFontMono, d3roTypo, d3roRadius } from '../theme'
 import { useI18n } from '../i18n'
 import { TemplateSection } from '../components/TemplateSection'
-import type { VoiceCommandRule, VoiceCommandKeyword, KeywordMatchMode, LLMChain, ChainStep } from '@shared/types'
+import type { VoiceCommandRule, VoiceCommandKeyword, KeywordMatchMode, LLMChain, ChainStep } from '@d3ro/core/types'
 
 interface CustomInstruction {
   id: string
@@ -69,10 +69,10 @@ export function CommandsPage(): React.ReactElement {
     const newId = activeId === id ? null : id
     setActiveId(newId)
     if (newId) {
-      window.electronAPI.config.set({ key: 'activeInstructionId' as keyof import('@shared/types').AppConfig, value: newId as never })
+      window.electronAPI.config.set({ key: 'activeInstructionId' as keyof import('@d3ro/core/types').AppConfig, value: newId as never })
       window.electronAPI.config.set({ key: 'defaultLLMAction', value: 'custom' })
     } else {
-      window.electronAPI.config.set({ key: 'activeInstructionId' as keyof import('@shared/types').AppConfig, value: '' as never })
+      window.electronAPI.config.set({ key: 'activeInstructionId' as keyof import('@d3ro/core/types').AppConfig, value: '' as never })
       window.electronAPI.config.set({ key: 'defaultLLMAction', value: 'none' })
     }
   }

apps/desktop/src/renderer/pages/DashboardPage.tsx

@@ -10,7 +10,7 @@ import { d3roPalette, d3roTypo } from '../theme'
 import { useI18n } from '../i18n'
 import { formatRecordingTime, formatRecordingTimeUnit, formatNumber, getDateKey } from '../utils/formatters'
 import { FileDropZone } from '../components/FileDropZone'
-import type { StatsSummary, HistoryEntry, HotkeyBinding, CaptionState, LicenseTier, UsageQuota } from '@shared/types'
+import type { StatsSummary, HistoryEntry, HotkeyBinding, CaptionState, LicenseTier, UsageQuota } from '@d3ro/core/types'
 
 // ── 메인 컴포넌트 ─────────────────────────────────────
 

apps/desktop/src/renderer/pages/DictionaryPage.tsx

@@ -10,7 +10,7 @@ import { MetalCard, PhosphorText } from '../components/ds'
 import { PageHeader, SearchInput, EmptyStateCard } from '../components/shared'
 import { d3roPalette, d3roFontMono, d3roTypo } from '../theme'
 import { useI18n } from '../i18n'
-import type { DictionaryEntry, DictionaryPage as DictPageData } from '@shared/types'
+import type { DictionaryEntry, DictionaryPage as DictPageData } from '@d3ro/core/types'
 
 const PAGE_SIZE = 50
 

apps/desktop/src/renderer/pages/HistoryPage.tsx

@@ -10,7 +10,7 @@ import { d3roPalette, d3roTypo, d3roFontMono, d3roRadius } from '../theme'
 import { useI18n } from '../i18n'
 import { getDateKey } from '../utils/formatters'
 import { EmptyStateCard, SearchInput, PageHeader, HistoryEntryCard } from '../components/shared'
-import type { HistoryEntry, HistoryPage as HistoryPageData, TagCount } from '@shared/types'
+import type { HistoryEntry, HistoryPage as HistoryPageData, TagCount } from '@d3ro/core/types'
 
 const PAGE_SIZE = 50
 

apps/desktop/src/renderer/pages/KnowledgeBasePage.tsx

@@ -14,7 +14,7 @@ import { MetalCard, PhosphorText, Led, PhysicalButton, ScreenPanel } from '../co
 import { PageHeader, EmptyStateCard } from '../components/shared'
 import { d3roPalette, d3roFontMono, d3roTypo } from '../theme'
 import { useI18n } from '../i18n'
-import type { RAGDocument, RAGQueryResult, RAGIndexProgress } from '@shared/types'
+import type { RAGDocument, RAGQueryResult, RAGIndexProgress } from '@d3ro/core/types'
 
 export function KnowledgeBasePage(): React.ReactElement {
   const { t } = useI18n()

apps/desktop/src/renderer/pages/MeetingModePage.tsx

@@ -25,7 +25,7 @@ import type {
   MeetingProcessingProgress,
   CaptionSegment,
   MeetingMemo,
-} from '@shared/types'
+} from '@d3ro/core/types'
 
 type MeetingView = 'list' | 'recording' | 'detail'
 

apps/desktop/src/renderer/pages/VoiceConversationPage.tsx

@@ -17,7 +17,7 @@ import type {
   ConversationState,
   ConversationMessage,
   ConversationAssistantDelta,
-} from '@shared/types'
+} from '@d3ro/core/types'
 
 export function VoiceConversationPage(): React.ReactElement {
   const { t } = useI18n()