---
milestone: v0.5.5
audited: 2026-04-05
status: passed
scores:
  requirements: 33/33
  phases: 6/6
  integration: 33/33
  flows: 2/2
gaps:
  requirements: []
  integration: []
  flows: []
tech_debt:
  - phase: 42
    items:
      - "TIDY-03: inferred_types() helper defined but never called — table_function.rs still uses direct .iter().zip() pattern"
      - "TIDY-07: VERIFICATION body shows PARTIAL but was resolved post-verification by commit bac534f (compile-time const assertion)"
      - "Phase 42 has no SUMMARY.md files (3 plans executed without summaries)"
      - "TIDY-01 scope: alter.rs and drop.rs still use read-then-write pattern, but write ops re-check so no corruption risk"
      - "define.rs:98-104 has one remaining string-interpolated SQL query (read-only PK catalog lookup, not a persistence write path)"
  - phase: all
    items:
      - "VALIDATION.md nyquist_compliant frontmatter never updated from false to true (paperwork only — all phases verified)"
      - "REQUIREMENTS.md TIDY-01 through TIDY-08 checkboxes never updated (paperwork — all verified as satisfied)"
      - "Most SUMMARY.md files lack requirements_completed frontmatter field"
nyquist:
  compliant_phases: []
  partial_phases: [37, 38, 39, 40, 41, 42]
  missing_phases: []
  overall: PARTIAL (all VALIDATION.md exist but frontmatter not updated to true)
---

# Milestone v0.5.5 — Audit Report

## Summary

**Milestone:** v0.5.5 SHOW/DESCRIBE Alignment & Refactoring
**Status:** PASSED
**Score:** 33/33 requirements satisfied, 6/6 phases verified, 2/2 E2E flows complete

All SHOW/DESCRIBE commands aligned to Snowflake column schemas. Two largest source files decomposed into module directories. Metadata storage added for timestamps and context. Persistence hardened with TOCTOU fix and parameterized queries. Test coverage expanded with proptests, layout guard, and file-backed round-trip. Zero regressions.

## Phase Results

| Phase | Name | Verification | Score | Date |
|-------|------|-------------|-------|------|
| 37 | Extract Shared Utilities | passed | 4/4 | 2026-04-01 |
| 38 | Module Directory Splits | passed | 4/4 | 2026-04-01 |
| 39 | Metadata Storage | passed | 4/4 | 2026-04-02 |
| 40 | SHOW Command Alignment | passed | 8/8 | 2026-04-02 |
| 41 | DESCRIBE Rewrite | passed | 7/7 | 2026-04-02 |
| 42 | Refactor & Test Reorg | passed | 8/8 | 2026-04-05 |

## Requirements Coverage (3-Source Cross-Reference)

| REQ-ID | VERIFICATION.md | SUMMARY Frontmatter | REQUIREMENTS.md | Final Status |
|--------|----------------|--------------------|-----------------| -------------|
| REF-01 | passed (Phase 38) | missing | [x] | satisfied |
| REF-02 | passed (Phase 38) | missing | [x] | satisfied |
| REF-03 | passed (Phase 37) | listed (37-01) | [x] | satisfied |
| REF-04 | passed (Phase 37) | listed (37-01) | [x] | satisfied |
| REF-05 | passed (Phase 38) | missing | [x] | satisfied |
| META-01 | passed (Phase 39) | missing | [x] | satisfied |
| META-02 | passed (Phase 39) | missing | [x] | satisfied |
| META-03 | passed (Phase 39) | missing | [x] | satisfied |
| META-04 | passed (Phase 39) | missing | [x] | satisfied |
| META-05 | passed (Phase 39) | missing | [x] | satisfied |
| SHOW-01 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-02 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-03 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-04 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-05 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-06 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-07 | passed (Phase 40) | missing | [x] | satisfied |
| SHOW-08 | passed (Phase 40) | missing | [x] | satisfied |
| DESC-01 | passed (Phase 41) | missing | [x] | satisfied |
| DESC-02 | passed (Phase 41) | missing | [x] | satisfied |
| DESC-03 | passed (Phase 41) | missing | [x] | satisfied |
| DESC-04 | passed (Phase 41) | missing | [x] | satisfied |
| DESC-05 | passed (Phase 41) | missing | [x] | satisfied |
| DESC-06 | passed (Phase 41) | missing | [x] | satisfied |
| DESC-07 | passed (Phase 41) | missing | [x] | satisfied |
| TIDY-01 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-02 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-03 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-04 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-05 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-06 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-07 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |
| TIDY-08 | passed (Phase 42) | missing (no summary) | [ ] | satisfied (update checkbox) |

**Orphaned requirements:** None
**Unsatisfied requirements:** None

Notes on TIDY requirements:
- TIDY-03: `inferred_types()` helper exists on `SemanticViewDefinition` (model.rs:229) — requirement is met. Integration note: method is not yet called by its intended consumer (`table_function.rs:459-462` still uses direct `.iter().zip()`). Listed as tech debt.
- TIDY-07: VERIFICATION body initially recorded PARTIAL, but commit `bac534f` resolved the gap by adding compile-time const assertions in `table_function.rs:819-828`. Frontmatter updated to 8/8 passed.

## Cross-Phase Integration

All 14 cross-phase exports properly wired:

| From | To | Wiring | Status |
|------|----|--------|--------|
| Phase 37 (util.rs) | Phase 38 (expand/ submodules) | `crate::util::suggest_closest` | WIRED |
| Phase 37 (util.rs) | Phase 38 (graph/ submodules) | `crate::util::suggest_closest` | WIRED |
| Phase 37 (errors.rs) | parse.rs, body_parser.rs | `crate::errors::ParseError` | WIRED |
| Phase 38 (expand/ mod.rs) | All prior consumers | Re-exports preserve API | WIRED |
| Phase 38 (graph/ mod.rs) | All prior consumers | Re-exports preserve API | WIRED |
| Phase 39 (created_on) | Phase 40 (list.rs) | `def.created_on` → SHOW VIEWS col 0 | WIRED |
| Phase 39 (database_name) | Phase 40 (list.rs, show_dims/metrics/facts) | `def.database_name` → col 0 | WIRED |
| Phase 39 (schema_name) | Phase 40 (list.rs, show_dims/metrics/facts) | `def.schema_name` → col 1 | WIRED |
| Phase 39 (Fact.output_type) | Phase 40 (show_facts.rs) | `f.output_type` → data_type column | WIRED |
| Phase 39 (database_name) | Phase 41 (describe.rs) | `def.database_name` → BASE_TABLE_DATABASE_NAME | WIRED |
| Phase 39 (schema_name) | Phase 41 (describe.rs) | `def.schema_name` → BASE_TABLE_SCHEMA_NAME | WIRED |
| Phase 39 (Fact.output_type) | Phase 41 (describe.rs) | `fact.output_type` → DATA_TYPE property | WIRED |
| Phase 42 (persist.rs) | define.rs, drop.rs, alter.rs | `execute_parameterized` replaces string interpolation | WIRED |
| Phase 42 (catalog.rs) | DDL flow | Single write lock for check-and-mutate | WIRED |

**Orphaned exports:** 1 — `inferred_types()` (defined but uncalled; tech debt, not a broken connection)
**Missing connections:** 0

## E2E Flows

| Flow | Status | Evidence |
|------|--------|----------|
| CREATE → metadata capture → catalog storage → SHOW → DESCRIBE → query | Complete | define.rs captures metadata, persists via parameterized SQL, SHOW/DESCRIBE VTabs consume stored fields, table_function.rs executes queries |
| File-backed persistence round-trip (CREATE → restart → SHOW → DROP) | Complete | phase42_persistence.test with `restart` directive |

## Nyquist Compliance

| Phase | VALIDATION.md | Compliant | Note |
|-------|---------------|-----------|------|
| 37 | exists | false (draft) | Frontmatter not updated after execution |
| 38 | exists | false (draft) | Frontmatter not updated after execution |
| 39 | exists | false (draft) | Frontmatter not updated after execution |
| 40 | exists | false (draft) | Frontmatter not updated after execution |
| 41 | exists | false (draft) | Frontmatter not updated after execution |
| 42 | exists | false (draft) | Frontmatter not updated after execution |

All phases have VALIDATION.md with sampling rates and automated verify commands. The `nyquist_compliant: false` frontmatter values are draft markers that were never flipped to `true` — this is a paperwork gap, not a functional gap. All phases passed their verification gates.

## Tech Debt

| Phase | Item | Severity |
|-------|------|----------|
| 42 | `inferred_types()` helper defined but never called by `table_function.rs` | Low (code quality) |
| 42 | Phase 42 has no SUMMARY.md files (3 plans executed without summaries) | Low (paperwork) |
| 42 | `alter.rs` and `drop.rs` use read-then-write pattern (write ops re-check, no corruption) | Low (advisory) |
| 42 | `define.rs:98-104` has one string-interpolated SQL (read-only PK catalog lookup) | Low (not a write path) |
| All | VALIDATION.md nyquist_compliant frontmatter never updated | Low (paperwork) |
| All | REQUIREMENTS.md TIDY-01-08 checkboxes not updated | Low (paperwork) |
| All | Most SUMMARY.md files lack requirements_completed frontmatter | Low (paperwork) |

## Quality Gate

- 487 Rust tests pass (unit + proptest + doc + integration)
- 19 sqllogictests pass
- DuckLake CI passes (when run outside sandbox)
- Zero regressions from v0.5.4

---
*Audited: 2026-04-05*
