Initial commit: SubManager Flutter App

주요 구현 완료 기능:
- 구독 관리 (추가/편집/삭제/카테고리 분류)
- 이벤트 할인 시스템 (기본값 자동 설정)
- SMS 자동 스캔 및 구독 정보 추출
- 알림 시스템 (타임존 처리 안정화)
- 환율 변환 지원 (KRW/USD)
- 반응형 UI 및 애니메이션
- 다국어 지원 (한국어/영어)

버그 수정:
- NotificationService tz.local 초기화 오류 해결
- MainScreenSummaryCard 레이아웃 오버플로우 수정
- 구독 추가 시 LateInitializationError 완전 해결

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

scripts/example_prd.txt

@@ -0,0 +1,47 @@
+<context>
+# Overview  
+[Provide a high-level overview of your product here. Explain what problem it solves, who it's for, and why it's valuable.]
+
+# Core Features  
+[List and describe the main features of your product. For each feature, include:
+- What it does
+- Why it's important
+- How it works at a high level]
+
+# User Experience  
+[Describe the user journey and experience. Include:
+- User personas
+- Key user flows
+- UI/UX considerations]
+</context>
+<PRD>
+# Technical Architecture  
+[Outline the technical implementation details:
+- System components
+- Data models
+- APIs and integrations
+- Infrastructure requirements]
+
+# Development Roadmap  
+[Break down the development process into phases:
+- MVP requirements
+- Future enhancements
+- Do not think about timelines whatsoever -- all that matters is scope and detailing exactly what needs to be build in each phase so it can later be cut up into tasks]
+
+# Logical Dependency Chain
+[Define the logical order of development:
+- Which features need to be built first (foundation)
+- Getting as quickly as possible to something usable/visible front end that works
+- Properly pacing and scoping each feature so it is atomic but can also be built upon and improved as development approaches]
+
+# Risks and Mitigations  
+[Identify potential risks and how they'll be addressed:
+- Technical challenges
+- Figuring out the MVP that we can build upon
+- Resource constraints]
+
+# Appendix  
+[Include any additional information:
+- Research findings
+- Technical specifications]
+</PRD>