docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

Topic_CSS/Topic_HTML/Topic_JavaScript/Topic_Prompt/Topic_Comfyui 등 기존 카테고리 폴더를 정리하고, Topic_Graphic/Dev 등 신규 산출물과 Topics 내부 세션/메모리 기록을 동기화.
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+---
+id: java-identifiers
+title: "Java Identifiers"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["자바 식별자"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["java", "programming", "w3schools", "identifiers", "naming"]
+raw_sources: ["https://www.w3schools.com/java/java_variables_identifiers.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Java Identifiers]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+A valid Java identifier must start with a letter, `$`, or `_` (never a digit), contain no spaces, avoid reserved keywords, and is case-sensitive — with descriptive names strongly favored over terse ones for maintainability. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Identifier** — the unique name for a variable. [S1]
+- **Naming rules** — letters, digits, underscores, `$` allowed; must begin with a letter (or `$`/`_`); no whitespace; case-sensitive; cannot be a reserved keyword. [S1]
+- **Convention** — start with lowercase; descriptive names recommended for readability. [S1]
+- **Invalid examples** — `2ndNumber` (starts with digit), `my var` (contains space), `int` (reserved keyword used as name). [S1]
+
+## 📖 세부 내용 (Details)
+- Good vs. terse naming: `int minutesPerHour = 60;` (clear) vs. `int m = 60;` (works, less clear). [S1]
+- Invalid identifiers: `int 2ndNumber = 5;`, `int my var = 10;`, `int int = 20;` — all raise errors. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — Python Variable Names 챕터와 동일한 규칙 구조(문자/숫자 시작 제약, 대소문자 구분, 예약어 금지)를 공유한다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Descriptive vs. terse naming (Java):
+```java
+int minutesPerHour = 60;  // Good: clear intent
+int m = 60;               // OK, but less clear
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.90
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[Java Tutorial]]
+- **관련 개념:** [[Java Variables]], [[Python Variable Names]]
+- **참조 맥락:** 변수명 작성 규칙 — Python Variable Names와 유사한 구조.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Java Identifiers — https://www.w3schools.com/java/java_variables_identifiers.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Java Identifiers" page (Astra wiki-curation, P-Reinforce v3.1 format).