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>

10_Wiki/Topics/Domain_Programming/Topic_CSharp/CSharp_Intro.md

@@ -0,0 +1,63 @@
+---
+id: csharp-intro
+title: "C# Introduction"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["What is C#", "C-Sharp", "C# 소개"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.87
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["csharp", "programming-language", "w3schools", "intro"]
+raw_sources: ["https://www.w3schools.com/cs/cs_intro.php"]
+applied_in: []
+github_commit: ""
+---
+
+# [[CSharp Intro]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+C# is explicitly introduced as sitting in the SAME "C family" lineage as the two languages this wiki just finished (C, C++) plus Java, but with a decisive fork: it's not an independent open standard like C/C++, it's a Microsoft-owned language tied to the .NET Framework — meaning the "which compiler/runtime do I use" question that barely mattered for C/C++ (any standards-compliant compiler works) becomes central for C# (tooling is Microsoft-specific, as the next chapter's Visual-Studio-only "Get Started" flow will confirm). [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **C# ("C-Sharp")** — an object-oriented programming language created by Microsoft, runs on the .NET Framework. [S1]
+- **Family lineage** — has roots in the C family; syntactically close to C++ and Java (explicitly stated, not implied). [S1]
+- **History** — first released in 2002; latest version at time of writing is C# 13 (November 2024). [S1]
+- **Use cases** — mobile apps, desktop apps, web apps/services/sites, games, VR, database applications. [S1]
+- **Why C#** — popularity, ease of learning, huge community support, object-oriented structure enabling code reuse (lowers development cost), and easy migration to/from C/C++/Java due to syntactic closeness. [S1]
+
+## 📖 세부 내용 (Details)
+- No prior programming experience is assumed for the tutorial. [S1]
+- The explicit "close to C, C++, and Java" claim is the tutorial's own framing for why switching between these languages is easy — a claim this wiki can directly test chapter-by-chapter against the already-completed Topic_C/Topic_CPP/Topic_Java. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **C/C++는 특정 회사 소유가 아니었지만 C#은 Microsoft 소유**: Topic_C/Topic_CPP는 언어 표준이 특정 기업에 종속되지 않았지만(ISO 표준), C#은 Microsoft가 만들고 .NET Framework 위에서 동작하는 언어라는 점이 이번 챕터에서 확인된 근본적 차이 — 이는 다음 챕터(Get Started)에서 Visual Studio 전용 설치 절차로 구체화됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 모바일/데스크톱/웹 앱, 게임, VR, 데이터베이스 애플리케이션 등 광범위한 사용처가 원문에서 나열됨. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+없음 — 이 챕터는 코드 예제가 없는 개념 소개 챕터.
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.87
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[C# Tutorial]]
+- **관련 개념:** [[CSharp Get Started]], [[CPP Intro]], [[Java Intro]]
+- **참조 맥락:** C# 튜토리얼의 첫 챕터 — Get Started로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — C# Introduction — https://www.w3schools.com/cs/cs_intro.php
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "C# Introduction" page (Astra wiki-curation, P-Reinforce v3.1 format).