v0.4.0 — Module Design ↔ Unit Testing

v0.4.0 — Module Design ↔ Unit Testing (Feature 004)

Fourth V-Model layer completing the full Requirements → Acceptance, System Design → System Test, Architecture Design → Integration Test, Module Design → Unit Test chain.

Added

• module-design command — DO-178C/ISO 26262-compliant low-level module designs with four mandatory views (Algorithmic/Logic, State Machine, Internal Data Structures, Error Handling & Return Codes)
• unit-test command — ISO 29119-4 white-box unit test plans with five named techniques (Statement & Branch Coverage, Boundary Value Analysis, Equivalence Partitioning, State Transition Testing, Strict Isolation) and Dependency & Mock Registries
• validate-module-coverage.sh / validate-module-coverage.ps1 — Deterministic ARCH→MOD→UTP→UTS bidirectional coverage validation with EXTERNAL and CROSS-CUTTING module support
• Matrix D (Unit Verification) in traceability matrix — ARCH → MOD → UTP → UTS with parent ARCH annotations
• --require-module-design, --require-unit-test flags for setup-v-model (bash + PowerShell)
• Module design and unit test fixtures across all scenario directories (minimal, complex, gaps, empty, golden)
• Module-level validators and MOD-NNN, UTP-NNN-X, UTS-NNN-X# ID patterns
• EXTERNAL and DERIVED MODULE tags for third-party and emergent module designs
• Module design and unit test LLM-as-judge quality metrics and E2E evaluation tests
• docs/id-schema-guide.md — Comprehensive guide to the four-tier ID schema, lifecycle, and end-to-end traceability

Changed

• Renamed validate-coverage → validate-requirement-coverage for consistent validate-{design-level}-coverage naming convention
• trace.md updated from triple-matrix to quadruple-matrix output (A + B + C + D)
• Total commands: 7 → 9; BATS tests: 67 → 91; Pester tests: 67 → 91; Structural evals: 37 → 51; LLM-as-judge evals: 26 → 36; E2E evals: 24 → 32

Fixed

• PowerShell validate-system-coverage.ps1 partial mode and empty file handling
• Minimal module-design fixture typed signatures for eval compliance

Stats

• 91 files changed, +14,664 lines
• 9 commands, 4 validators, 4 traceability matrices
• 119 evals passing (51 structural + 36 LLM-as-judge + 32 E2E)

Full Changelog: v0.3.0...v0.4.0