docs: initial spec, v0-plan, brainstorming, CLAUDE.md harness rules

- docs/spec.md: 정식 spec (브랜드·시장·기술 스택·일정·Day 0 검증 결과)
- docs/v0-plan.md: W1~W4 13 task 구현 plan (TDD + manual test 절차)
- docs/brainstorming-raw.md: 2026-05-23 brainstorming 원본
- CLAUDE.md: 하네스 운영 규약 (컨텍스트 3단·agentic 7 구성요소·박재오 Why 정합도)
- README.md: 입구 + v0 상태 표
- .gitattributes: Windows ↔ macOS LF 통일 + pbxproj 바이너리 처리
- src/, modules/ 폴더 구조 (.gitkeep)

박재오 + AI agent 협업 표준 정립. 7월 착수 → 5/24 앞당김.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitattributes

@@ -0,0 +1,37 @@
+# Auto detect text files and perform LF normalization (Windows ↔ macOS 호환)
+* text=auto eol=lf
+
+# Shell / build scripts must stay LF
+*.sh text eol=lf
+
+# Windows batch must stay CRLF
+*.bat text eol=crlf
+*.cmd text eol=crlf
+
+# iOS Xcode project file — merge conflicts are nightmare, treat as binary
+*.pbxproj -text
+
+# Binary assets
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.zip binary
+*.jar binary
+*.keystore binary
+
+# Fonts
+*.ttf binary
+*.woff binary
+*.woff2 binary
+*.eot binary
+*.otf binary
+
+# Media
+*.mp4 binary
+*.mov binary
+*.webm binary
+*.mp3 binary
+*.wav binary