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_Java/Java_BufferedWriter.md

@@ -0,0 +1,73 @@
+---
+id: java-bufferedwriter
+title: "Java BufferedWriter"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["자바 BufferedWriter"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.88
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["java", "programming", "w3schools", "io", "bufferedwriter", "character-stream"]
+raw_sources: ["https://www.w3schools.com/java/java_bufferedwriter.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Java BufferedWriter]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`BufferedWriter`'s `newLine()` is the platform-independent way to insert line breaks — unlike hardcoding `"\n"` in a string, `newLine()` uses the correct line separator for whatever OS the program runs on, though the source primarily frames it as a convenience method rather than a portability guarantee. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`BufferedWriter`** — writes text line/string at a time; must be paired with `FileWriter` (which opens/creates the file). [S1]
+- **`.newLine()`** — inserts a line break, an alternative to embedding `\n` manually. [S1]
+- **Default overwrite** — like FileWriter, replaces existing file content unless append mode is used. [S1]
+- **Append mode** — pass `true` to the underlying `FileWriter` constructor: `new FileWriter("filename.txt", true)`. [S1]
+
+## 📖 세부 내용 (Details)
+- Basic write with newLine(): `try (BufferedWriter bw = new BufferedWriter(new FileWriter("filename.txt"))) { bw.write("First line"); bw.newLine(); bw.write("Second line"); } catch (IOException e) {...}`. [S1]
+- Append mode: `try (BufferedWriter bw = new BufferedWriter(new FileWriter("filename.txt", true))) { bw.newLine(); bw.write("Appended line"); }`. [S1]
+- Class comparison: FileWriter (simple/quick), BufferedWriter (faster for large files, easy newLine()), FileOutputStream (binary files). [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 여러 줄의 텍스트를 newLine()으로 구분하며 파일에 쓰는 표준 패턴이다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Writing multiple lines with newLine() (Java):
+```java
+try (BufferedWriter bw = new BufferedWriter(new FileWriter("filename.txt"))) {
+    bw.write("First line");
+    bw.newLine(); // add line break
+    bw.write("Second line");
+    System.out.println("Successfully wrote to the file.");
+} catch (IOException e) {
+    System.out.println("Error writing file.");
+}
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.88
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[Java Tutorial]]
+- **관련 개념:** [[Java BufferedReader]], [[Java FileOutputStream]], [[Java Files Write]]
+- **참조 맥락:** 버퍼링을 통한 빠른 텍스트 쓰기 — Data Structures & Collections 섹션으로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Java BufferedWriter — https://www.w3schools.com/java/java_bufferedwriter.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Java BufferedWriter" page (Astra wiki-curation, P-Reinforce v3.1 format).