Specification Quality Checklist: Guest Mode

Purpose: Validate specification completeness and quality before proceeding to planning Created: 2026-05-30 Feature: spec.md

Content Quality

• [x] No implementation details (languages, frameworks, APIs)
• [x] Focused on user value and business needs
• [x] Written for non-technical stakeholders
• [x] All mandatory sections completed

Requirement Completeness

• [x] No [NEEDS CLARIFICATION] markers remain
• [x] Requirements are testable and unambiguous
• [x] Success criteria are measurable
• [x] Success criteria are technology-agnostic (no implementation details)
• [x] All acceptance scenarios are defined
• [x] Edge cases are identified
• [x] Scope is clearly bounded (三種狀態的對比表格清楚劃定邊界)
• [x] Dependencies and assumptions identified

Feature Readiness

• [x] All functional requirements have clear acceptance criteria
• [x] User scenarios cover primary flows
• [x] Feature meets measurable outcomes defined in Success Criteria
• [x] No implementation details leak into specification

Notes

• SC-002 明確要求現有 paywall 行為零迴歸，這是最重要的品質守門員
• Guest Mode 狀態機制（sessionStorage vs Context）記錄於 Assumptions，留給 plan 階段決定
• 與 008-article-sharing 的互動（分享連結不受 guest 影響）已在 Edge Cases 說明