Initialize project structure with foundational files including .gitignore, README, and specification templates. Establish project constitution outlining core principles for code quality, testing, user experience, and performance. Add initial feature specification for Reference Board Viewer application.

specs/001-reference-board-viewer/checklists/requirements.md

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+# Specification Quality Checklist: Reference Board Viewer
+
+**Purpose**: Validate specification completeness and quality before proceeding to planning  
+**Created**: 2025-11-02  
+**Feature**: [spec.md](../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
+
+**Notes:** Spec successfully avoids implementation details, focuses on WHAT users need and WHY. All requirements written in business terms.
+
+## 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
+- [x] Dependencies and assumptions identified
+
+**Notes:** 
+- **All clarifications resolved:**
+  1. FR3: Configurable share permissions (View-only or View+Comment) - owner decides per link
+  2. FR16: Hybrid connection detection (automatic with manual override)
+  3. FR13: User-configurable navigation order (Chronological, Spatial, Alphabetical, Random)
+- All requirements have clear acceptance criteria
+- Success criteria are measurable and technology-agnostic
+- User scenarios cover primary flows comprehensively
+- Scope clearly defined with 18 functional requirements
+
+## 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:** 18 functional requirements with detailed acceptance criteria. 5 user scenarios covering critical paths.
+
+## Clarification Resolutions
+
+All clarification questions have been answered:
+
+### Question 1: Viewer Annotation Capability ✅ RESOLVED
+
+**User's Answer:** C - Configurable per share link (owner decides)
+
+**Implementation Details Added to Spec:**
+- Share links have two permission levels: View-only or View+Comment
+- Owner chooses permission level when creating share link
+- Owner can change permission level of existing links
+- View+Comment allows annotations but not image/layout modifications
+- Comments from viewers are visually distinct from owner content
+
+### Question 2: Connection Speed Detection Method ✅ RESOLVED
+
+**User's Answer:** C - Hybrid: Auto-detect with manual override option
+
+**Implementation Details Added to Spec:**
+- Automatic detection using browser Network Information API and speed test
+- Three quality tiers: Low (<1 Mbps), Medium (1-5 Mbps), High (>5 Mbps)
+- Manual override available: Auto/Low/Medium/High setting
+- Quality setting selector easily accessible in UI
+- Periodic re-evaluation (every 5 minutes) in Auto mode
+- Setting persists across sessions
+
+### Question 3: Image Navigation Order ✅ RESOLVED
+
+**User's Answer:** C - User-configurable, with additional options (Random and Alphabetical)
+
+**Implementation Details Added to Spec:**
+- Four navigation order options: Chronological (default), Spatial, Alphabetical, Random
+- Navigation order applies to both focus mode and slideshow
+- User preference saved and persists across sessions
+- Also added "Random" option to FR18 (Arrange Images by Criteria)
+
+## Validation Status: ✅ COMPLETE
+
+Specification is **READY FOR PLANNING** (`/speckit.plan`)
+
+### Quality Summary
+
+- **18 Functional Requirements** with detailed, testable acceptance criteria
+- **7 Non-Functional Requirements** aligned with constitutional principles
+- **5 User Scenarios** covering critical workflows
+- **14 Success Criteria** (measurable, technology-agnostic)
+- **All clarifications resolved** (no open questions)
+- **696 lines** of comprehensive specification
+
+### Constitutional Alignment Verified
+
+- **Code Quality (Principle 1):** Modularity and separation of concerns emphasized in NFR4
+- **Testing (Principle 2):** 80% coverage requirement in NFR2, all requirements have testable acceptance criteria
+- **UX Consistency (Principle 3):** WCAG 2.1 AA compliance, keyboard navigation, clear error messages in NFR3
+- **Performance (Principle 4):** Specific performance budgets defined in NFR1 (60fps, <200ms response, 1000 concurrent users)
+
+### Next Steps
+
+1. Run `/speckit.plan` to create the implementation plan
+2. Plan will break down the 18 functional requirements into phased development approach
+3. Technical architecture and Nix deployment strategy will be defined in planning phase
+