refactor(topics): 멀티 에이전트용 지식 재편 — _Common(공통 기본기) + Domain_* 구조
에이전트 8종(대화형/프로그래머 C·S/디자이너/설계자/기획자/QA/PD/PM)에게 [공통 기본 능력 + 롤별 Specialty] 2층으로 지식을 주입하기 위한 재분류. 문서 내용·포맷은 무수정, 폴더 이동만 (6,372개 문서 수 보존 확인). - Topic_Programming → Domain_Programming (내부 구조 보존) - Topic_Graphic → Domain_Design - Topic_Business → Domain_Product - Topic_General → Domain_General - _Common 신설: Math(구 Topic_Math_Specialty), Reasoning(구 General/From_Thinking & Reasoning), Reasoning_Creativity(구 General/From_창의성), Communication(Poetic_Blog_Writing + From_writing) - 타 도메인의 From_* 폴더는 유지 (출처 표기일 뿐, 이미 도메인에 맞게 분류된 문서) - 빈 폴더 정리 (memory/procedures) - 에이전트→폴더 매핑은 workspace의 .astra/agent-knowledge-map.json (9개 에이전트) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Antigravity Agent
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---
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id: wiki-2026-0508-모듈식-컴포넌트-modular-components
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title: 모듈식 컴포넌트 (Modular Components)
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category: 10_Wiki/Topics
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status: verified
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canonical_id: self
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aliases: [Modular Components, Composable UI, Component-Driven Architecture]
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duplicate_of: none
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source_trust_level: A
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confidence_score: 0.9
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verification_status: applied
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tags: [architecture, ui, design-system, composition]
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raw_sources: []
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last_reinforced: 2026-05-10
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github_commit: pending
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tech_stack:
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language: typescript
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framework: React 19 / Web Components
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---
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# 모듈식 컴포넌트 (Modular Components)
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## 매 한 줄
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> **"매 single-responsibility의 재사용 가능한 unit을 composable interface로 묶어 system을 build"**. 2003 Brad Frost의 Atomic Design → 2013 React 도입 → 2020 design-token 기반 Headless UI (Radix, shadcn) → 2026 현재 Server Components + Web Components의 hybrid composition이 mainstream.
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## 매 핵심
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### 매 5 Properties of Modular Component
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- **Single Responsibility**: 매 component 하나의 명확한 purpose.
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- **Encapsulation**: 매 internal state / DOM 외부 격리.
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- **Composability**: 매 children / slots 통한 nested 조합 가능.
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- **Configurability via props**: 매 behavior 외부 inject (no hard-coded).
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- **Testability in isolation**: 매 mock 없이 unit-test 가능.
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### 매 Composition Patterns
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- **Compound Components**: 매 `<Tabs><Tabs.List/><Tabs.Panel/></Tabs>` — context-shared.
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- **Slots / Render Props**: 매 children 위치 customization.
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- **Polymorphic `as` prop**: 매 `<Button as="a" href=...>` — element type swap.
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- **Headless / Bring-Your-Own-Style**: 매 logic만 제공, style은 consumer 결정 (Radix).
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### 매 응용
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1. Atomic Design (Atoms → Molecules → Organisms → Templates).
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2. Material UI / Chakra / shadcn-ui — design-system implementations.
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3. Storybook — component-driven dev / docs.
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4. Web Components (LitElement) — framework-agnostic, browser-native.
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## 💻 패턴
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### Compound Component (React)
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```tsx
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import { createContext, useContext, useState, ReactNode } from 'react';
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const TabsCtx = createContext<{active: string; setActive: (v: string) => void} | null>(null);
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export function Tabs({ defaultValue, children }: { defaultValue: string; children: ReactNode }) {
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const [active, setActive] = useState(defaultValue);
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return <TabsCtx.Provider value={{active, setActive}}>{children}</TabsCtx.Provider>;
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}
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Tabs.List = ({ children }: { children: ReactNode }) => <div role="tablist">{children}</div>;
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Tabs.Trigger = ({ value, children }: { value: string; children: ReactNode }) => {
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const ctx = useContext(TabsCtx)!;
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return (
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<button role="tab" aria-selected={ctx.active === value} onClick={() => ctx.setActive(value)}>
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{children}
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</button>
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);
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};
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Tabs.Panel = ({ value, children }: { value: string; children: ReactNode }) => {
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const ctx = useContext(TabsCtx)!;
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return ctx.active === value ? <div role="tabpanel">{children}</div> : null;
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};
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```
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### Polymorphic Component
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```tsx
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type AsProp<C extends React.ElementType> = { as?: C };
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type PolymorphicProps<C extends React.ElementType, P = {}> =
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P & AsProp<C> & Omit<React.ComponentPropsWithoutRef<C>, keyof (P & AsProp<C>)>;
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export function Box<C extends React.ElementType = 'div'>(
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{ as, children, ...rest }: PolymorphicProps<C, { variant?: 'card' | 'inline' }>
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) {
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const Tag = as || 'div';
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return <Tag {...rest}>{children}</Tag>;
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}
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// usage: <Box as="a" href="/x">link</Box>
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```
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### Headless Hook (Disclosure)
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```tsx
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import { useState, useId, useCallback } from 'react';
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export function useDisclosure(initial = false) {
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const [open, setOpen] = useState(initial);
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const id = useId();
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return {
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isOpen: open,
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toggle: useCallback(() => setOpen(o => !o), []),
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open: useCallback(() => setOpen(true), []),
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close: useCallback(() => setOpen(false), []),
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triggerProps: { 'aria-expanded': open, 'aria-controls': id },
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panelProps: { id, hidden: !open },
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};
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}
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```
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### Web Component (Lit)
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```ts
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import { LitElement, html, css } from 'lit';
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import { customElement, property } from 'lit/decorators.js';
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@customElement('ag-button')
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export class AgButton extends LitElement {
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static styles = css`
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button { padding: 0.5rem 1rem; border-radius: 0.375rem; }
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:host([variant="primary"]) button { background: var(--ag-primary, #2563eb); color: white; }
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`;
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@property() variant: 'primary' | 'ghost' = 'primary';
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render() {
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return html`<button @click=${() => this.dispatchEvent(new CustomEvent('ag-click'))}>
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<slot></slot>
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</button>`;
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}
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}
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```
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### Design Token (CSS variables)
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```css
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:root {
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--color-primary-50: #eff6ff;
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--color-primary-500: #3b82f6;
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--color-primary-900: #1e3a8a;
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--space-1: 0.25rem;
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--space-2: 0.5rem;
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--radius-md: 0.375rem;
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--shadow-sm: 0 1px 2px rgb(0 0 0 / 0.05);
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}
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.btn {
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padding: var(--space-2) var(--space-2);
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background: var(--color-primary-500);
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border-radius: var(--radius-md);
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box-shadow: var(--shadow-sm);
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}
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```
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### React Server Component composition
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```tsx
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// app/dashboard/page.tsx — Server Component
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import { Suspense } from 'react';
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import { ChartCard } from '@/components/ChartCard';
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import { ClientFilters } from './filters.client';
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export default async function Page() {
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const data = await fetchDashboardData(); // server-only
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return (
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<main>
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<ClientFilters />
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<Suspense fallback={<Skeleton />}>
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<ChartCard data={data.revenue} />
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</Suspense>
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</main>
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);
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}
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```
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## 매 결정 기준
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| 상황 | Approach |
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|---|---|
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| 단일 React app | Compound + headless hooks |
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| Cross-framework / micro-frontend | Web Components |
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| Design system 배포 | Headless (Radix-style) + design tokens |
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| SSR-heavy | RSC + selective Client Components |
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| Mobile (RN) | Headless logic + platform-specific render |
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**기본값**: Compound components + design tokens + Storybook isolation.
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## 🔗 Graph
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- 부모: [[Design_System]]
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- 변형: [[Headless_UI]] · [[Compound_Components]]
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- 응용: [[Storybook]] · [[Radix_UI]] · [[shadcn]] · [[Lit]]
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- Adjacent: [[Atomic_Design]] · [[Design_Tokens]] · [[React_Server_Components]]
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## 🤖 LLM 활용
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**언제**: scaffold component variants, prop-type derivation, story / test generation, a11y attribute fill-in.
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**언제 X**: 매 design decisions (token system shape, theming model) — 매 human design-system curator 영역.
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## ❌ 안티패턴
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- **God component**: 매 1000-line component, 다목적 props 30개.
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- **Prop drilling 5+ levels**: 매 context / composition으로 refactor.
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- **Style leakage**: 매 :global / inherited styles → encapsulation 깨짐.
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- **Tight coupling to data fetch**: 매 component 내부에서 직접 fetch → reuse 불가능.
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## 🧪 검증 / 중복
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- Verified (Brad Frost *Atomic Design*, React docs, Radix UI specs).
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- 신뢰도 A.
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## 🕓 Changelog
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| 날짜 | 변경 |
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|---|---|
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| 2026-05-08 | Phase 1 |
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| 2026-05-10 | Manual cleanup — modular component 5-property + composition patterns + RSC 정리 |
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