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_PHP/PHP_Match.md

@@ -0,0 +1,74 @@
+---
+id: php-match
+title: "PHP Match"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["match expression", "PHP match"]
+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: ["php", "programming", "w3schools", "match", "php8"]
+raw_sources: ["https://www.w3schools.com/php/php_match.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP Match]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`match` (PHP 8.0+) uses STRICT comparison (`===`) internally while `switch` uses loose comparison (`==`) — this means `match` won't accidentally match a string `"1"` against an int `1` the way `switch` might, making `match` both safer and more predictable, on top of returning a value and auto-breaking after any match. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`match`** (PHP 8.0+) — evaluates an expression against alternatives using strict (`===`) comparison, returns a value. [S1]
+- **Four key differences from switch** — more readable syntax; returns a value (switch doesn't); auto-breaks after a match (switch needs explicit `break`); strict comparison (switch uses loose `==`). [S1]
+- **Syntax** — `$result = match($expr) { cond1 => val1, cond2, cond3 => val2, default => defaultVal };`. [S1]
+- **Multiple conditions per arm** — comma-separated conditions sharing one result. [S1]
+- **`UnhandledMatchError`** — thrown if no condition matches AND there's no `default` arm. [S1]
+
+## 📖 세부 내용 (Details)
+- Basic match (equivalent to the switch example): `$favcolor = "red"; $text = match($favcolor) { "red" => "Your favorite color is red!", "blue" => "...", "green" => "...", default => "..." }; echo $text;`. [S1]
+- Multiple values per arm: `$text = match($d) { 1, 2, 3, 4, 5 => "The week feels so long!", 6, 0 => "Weekends are best!", default => "Invalid day" };`. [S1]
+- No match, no default → exception: `$favcolor = "pink"; try { $text = match($favcolor) { "red" => ..., "blue" => ..., "green" => ... }; } catch (\UnhandledMatchError $e) { var_dump($e); }`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **match와 switch의 근본적 차이 4가지**: 값 반환 여부, 자동 break 여부, 엄격 비교(===) vs 느슨한 비교(==)가 명확히 구분됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 값이 없을 때 UnhandledMatchError를 try-catch로 처리하는 패턴이 견고한 매치 로직의 실전 예시다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Match expression with strict comparison and value return (PHP 8+):
+```php
+$favcolor = "red";
+$text = match($favcolor) {
+    "red" => "Your favorite color is red!",
+    "blue" => "Your favorite color is blue!",
+    "green" => "Your favorite color is green!",
+    default => "Your favorite color is neither red, blue, nor green!",
+};
+echo $text;
+```
+
+## ✅ 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:** [[PHP Tutorial]]
+- **관련 개념:** [[PHP Switch]], [[PHP Exceptions]], [[PHP Looping]]
+- **참조 맥락:** switch의 PHP 8 대안 — 반복문(Looping) 섹션으로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP match Expression — https://www.w3schools.com/php/php_match.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP match Expression" page (Astra wiki-curation, P-Reinforce v3.1 format).