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# Specification Quality Checklist: Python-Control Export

**Purpose**: Validate specification completeness and quality before proceeding to planning
**Created**: 2026-01-15
**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

**Validation Result**: ✅ ALL CHECKS PASSED

The specification is complete and ready for the next phase (`/speckit.plan`).

### Strengths:
1. Clear prioritization of user stories with independent testability
2. Comprehensive functional requirements covering all block types and validation scenarios
3. Measurable success criteria focused on user outcomes (export success, simulation correctness, performance)
4. Well-defined scope boundaries (SISO only, no reverse conversion, no MIMO)
5. Edge cases thoroughly documented
6. Dependencies and risks clearly identified

### Technical Notes (for planning phase):
- While the spec appropriately avoids implementation details, the functional requirements correctly reference python-control API elements (ct.tf, ct.ss, interconnect) because these are the **interface contract** that defines what "export to python-control" means
- The requirement to use specific constructors (FR-002 through FR-005) is necessary to ensure compatibility with python-control's ecosystem, not an implementation detail
- Sum block sign handling (FR-007, FR-015) is well-specified but will require careful testing due to indexing complexity with skipped "|" signs
