# Specification Quality Checklist: M3 Expressive Design System Adoption

**Purpose**: Validate specification completeness and quality before proceeding to planning
**Created**: 2026-05-13
**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

## 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

## 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

- Spec references `ExperimentalMaterial3ExpressiveApi` and `MaterialExpressiveTheme` as design system identifiers (not implementation guidance) — acceptable per M3E being the named design system
- FR-012 mentions the `@OptIn` annotation — this is a boundary-level implementation constraint necessary for safety, not implementation detail
- Typography variant names (e.g., `titleMediumEmphasized`) are M3 Expressive design token names, not code references
- All success criteria measure user-observable outcomes (fps, tap count, render time, visual hierarchy) rather than code metrics
