---
milestone: v0.5.4
audited: "2026-03-27T14:00:00Z"
status: tech_debt
scores:
  requirements: 44/46
  phases: 5/6 verified (Phase 34 missing VERIFICATION.md)
  integration: 18/18 exports wired, 0 orphaned (integration checker verified)
  flows: 4/4 E2E flows verified, 2 example bugs found and fixed
gaps:
  requirements:
    - id: "CREG-04"
      status: "unsatisfied"
      phase: "Phase 36"
      claimed_by_plans: ["36-03-PLAN.md"]
      completed_by_plans: []
      verification_status: "human_needed"
      evidence: "Plan 36-03 is non-autonomous (human-action gates); requires squash-merge to main, GitHub account action to fork duckdb/community-extensions, and external CE build pipeline"
    - id: "CREG-05"
      status: "unsatisfied"
      phase: "Phase 36"
      claimed_by_plans: ["36-03-PLAN.md"]
      completed_by_plans: []
      verification_status: "human_needed"
      evidence: "Depends on CREG-04; CE PR must be merged and registry updated before INSTALL semantic_views FROM community can work"
    - id: "DKDB-01"
      status: "partial"
      phase: "Phase 34"
      claimed_by_plans: ["34-01-PLAN.md"]
      completed_by_plans: ["34-01-SUMMARY.md"]
      verification_status: "missing"
      evidence: "Phase 34 has no VERIFICATION.md; DKDB-01 not listed in any SUMMARY frontmatter; requirement [x] checked in REQUIREMENTS.md; code evidence: just test-all passes on DuckDB 1.5.x"
    - id: "DKDB-02"
      status: "partial"
      phase: "Phase 34"
      claimed_by_plans: ["34-02-PLAN.md"]
      completed_by_plans: ["34-02-SUMMARY.md"]
      verification_status: "missing"
      evidence: "Phase 34 has no VERIFICATION.md; DKDB-02 listed in 34-02 SUMMARY frontmatter; requirement [x] checked"
    - id: "DKDB-03"
      status: "partial"
      phase: "Phase 34"
      claimed_by_plans: ["34-02-PLAN.md"]
      completed_by_plans: ["34-02-SUMMARY.md"]
      verification_status: "missing"
      evidence: "Phase 34 has no VERIFICATION.md; listed in 34-02 SUMMARY frontmatter; duckdb/1.4.x branch exists"
    - id: "DKDB-04"
      status: "partial"
      phase: "Phase 34"
      claimed_by_plans: ["34-02-PLAN.md"]
      completed_by_plans: ["34-02-SUMMARY.md"]
      verification_status: "missing"
      evidence: "Phase 34 has no VERIFICATION.md; listed in 34-02 SUMMARY frontmatter; Build.yml dual matrix confirmed"
    - id: "DKDB-05"
      status: "partial"
      phase: "Phase 34"
      claimed_by_plans: ["34-02-PLAN.md"]
      completed_by_plans: ["34-02-SUMMARY.md"]
      verification_status: "missing"
      evidence: "Phase 34 has no VERIFICATION.md; listed in 34-02 SUMMARY frontmatter; .duckdb-version files on both branches"
    - id: "DKDB-06"
      status: "partial"
      phase: "Phase 34"
      claimed_by_plans: ["34-02-PLAN.md"]
      completed_by_plans: ["34-02-SUMMARY.md"]
      verification_status: "missing"
      evidence: "Phase 34 has no VERIFICATION.md; listed in 34-02 SUMMARY frontmatter; DuckDBVersionMonitor.yml dual-track workflow exists"
  integration: []
  flows: []
tech_debt:
  - phase: "34-duckdb-1-5-upgrade-lts-branch"
    items:
      - "Missing VERIFICATION.md — phase completed but never verified by gsd-verifier"
  - phase: "36-registry-publishing-maintainer-docs"
    items:
      - "CREG-04/CREG-05 are structural human-action checkpoints, not implementation gaps"
      - "description.yml ref field is PLACEHOLDER_COMMIT_SHA — replaced after squash-merge to main"
  - phase: "inherited"
    items:
      - "DDL pipeline uses all-VARCHAR result forwarding (TECH-DEBT.md item 12)"
      - "FFI execution layer not fuzz-covered standalone (TECH-DEBT.md arch limitation 1)"
      - "DuckDB version pinning = exact version (TECH-DEBT.md arch limitation 2)"
nyquist:
  compliant_phases: 0
  partial_phases: 6
  missing_phases: 0
  overall: "all_partial"
---

# v0.5.4 Milestone Audit Report

**Milestone:** v0.5.4 Snowflake-Parity & Registry Publishing
**Audited:** 2026-03-27
**Status:** tech_debt (no critical blockers; 2 human-action items + 1 missing verification)

## Summary

| Dimension | Score | Details |
|-----------|-------|---------|
| Requirements | 44/46 | 38 satisfied, 6 partial (verification gap), 2 unsatisfied (human-action) |
| Phases | 5/6 verified | Phase 34 missing VERIFICATION.md |
| Integration | Pass | Cross-phase wiring verified via VERIFICATION.md key link tables |
| E2E Flows | Pass | DDL→query, SHOW filtering, CE submission path all wired |
| Nyquist | 0/6 compliant | All phases have VALIDATION.md but none completed wave 0 |

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

### Satisfied (38/46)

| REQ-ID | REQUIREMENTS.md | VERIFICATION.md | SUMMARY Frontmatter | Status |
|--------|-----------------|-----------------|---------------------|--------|
| CARD-01 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-02 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-03 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-04 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-05 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-06 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-07 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-08 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| CARD-09 | [x] Complete | 33-VERIFICATION: SATISFIED | — | satisfied |
| DDL-01 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-02 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-03 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-04 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-05 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-06 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-07 | [x] Complete | 34.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-08 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-09 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-10 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-11 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-12 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-13 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-14 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-15 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-16 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-17 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-18 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DDL-19 | [x] Complete | 34.1.1-VERIFICATION: SATISFIED | — | satisfied |
| DOCS-01 | [x] Complete | 35-VERIFICATION: SATISFIED | 35-01 frontmatter | satisfied |
| DOCS-02 | [x] Complete | 35-VERIFICATION: SATISFIED | 35-01 frontmatter | satisfied |
| DOCS-03 | [x] Complete | 35-VERIFICATION: SATISFIED | 35-01 frontmatter | satisfied |
| DOCS-04 | [x] Complete | 35-VERIFICATION: SATISFIED | 35-01 frontmatter | satisfied |
| CREG-01 | [x] Complete | 36-VERIFICATION: SATISFIED | 36-01 frontmatter | satisfied |
| CREG-02 | [x] Complete | 36-VERIFICATION: SATISFIED (andium omitted by D-06 design) | 36-01 frontmatter | satisfied |
| CREG-03 | [x] Complete | 36-VERIFICATION: SATISFIED | 36-01 frontmatter | satisfied |
| MAINT-01 | [x] Complete | 36-VERIFICATION: SATISFIED | — | satisfied |
| MAINT-02 | [x] Complete | 36-VERIFICATION: SATISFIED | — | satisfied |
| MAINT-03 | [x] Complete | 36-VERIFICATION: SATISFIED | — | satisfied |

### Partial — Verification Gap (6/46)

These requirements are checked in REQUIREMENTS.md and listed in SUMMARY frontmatter but have no VERIFICATION.md evidence because Phase 34 was never formally verified.

| REQ-ID | REQUIREMENTS.md | VERIFICATION.md | SUMMARY Frontmatter | Status |
|--------|-----------------|-----------------|---------------------|--------|
| DKDB-01 | [x] Complete | MISSING | — | partial |
| DKDB-02 | [x] Complete | MISSING | 34-02 frontmatter | partial |
| DKDB-03 | [x] Complete | MISSING | 34-02 frontmatter | partial |
| DKDB-04 | [x] Complete | MISSING | 34-02 frontmatter | partial |
| DKDB-05 | [x] Complete | MISSING | 34-02 frontmatter | partial |
| DKDB-06 | [x] Complete | MISSING | 34-02 frontmatter | partial |

**Note:** Phase 34 work is complete (DuckDB 1.5.0 upgrade, LTS branch, dual CI) — the gap is procedural (missing VERIFICATION.md), not functional. All subsequent phases (34.1, 34.1.1, 35, 36) built on Phase 34's DuckDB 1.5.0 foundation and passed their verifications.

### Unsatisfied — Human Action Required (2/46)

| REQ-ID | REQUIREMENTS.md | VERIFICATION.md | SUMMARY Frontmatter | Status |
|--------|-----------------|-----------------|---------------------|--------|
| CREG-04 | [ ] Pending | 36-VERIFICATION: PENDING | — | unsatisfied |
| CREG-05 | [ ] Pending | 36-VERIFICATION: PENDING | — | unsatisfied |

**Note:** These are structural human-action checkpoints that depend on post-milestone actions:
1. Squash-merge milestone branch to main (produces real commit SHA)
2. Replace PLACEHOLDER_COMMIT_SHA in description.yml
3. Fork duckdb/community-extensions and submit PR
4. CE build pipeline validation on external infrastructure
5. CE team review and merge

All automated prerequisites (description.yml, LICENSE, hello_world, MAINTAINER.md) are complete.

## Phase Verification Summary

| Phase | VERIFICATION.md | Status | Score | Requirements |
|-------|-----------------|--------|-------|-------------|
| 33 — UNIQUE & Cardinality | Yes | passed | 20/20 | CARD-01 through CARD-09 (9/9 satisfied) |
| 34 — DuckDB 1.5 Upgrade | **No** | **unverified** | — | DKDB-01 through DKDB-06 (6/6 partial) |
| 34.1 — DDL Surface Parity | Yes | passed | 12/12 | DDL-01 through DDL-07 (7/7 satisfied) |
| 34.1.1 — SHOW Filtering | Yes | passed | 8/8 | DDL-08 through DDL-19 (12/12 satisfied) |
| 35 — Documentation Site | Yes | passed | 5/5 | DOCS-01 through DOCS-04 (4/4 satisfied) |
| 36 — Registry & Maintainer | Yes | human_needed | 6/8 | CREG-01/02/03/MAINT-01/02/03 satisfied; CREG-04/05 pending |

## Cross-Phase Integration (Integration Checker Report)

**Wiring:** 18/18 exports properly connected, 0 orphaned, 0 missing
**Flows:** 4 E2E flows verified, 2 example bugs found and **FIXED**

### Bugs Found and Fixed

1. **`examples/snowflake_parity.py` line 142** — `IF EXISTS` placed at wrong position in ALTER syntax. Fixed: moved before view name per parser prefix detection.
2. **`examples/snowflake_parity.py` line 202** — Used removed `MANY TO ONE` keyword. Fixed: removed keyword, cardinality inferred from PK declarations.
3. **`examples/advanced_features.py` lines 64, 65, 116, 117, 179** — Pre-existing: used `MANY TO ONE` keywords removed in Phase 33. Fixed: removed keywords, updated comments.

### Verified Integration Points

1. **Phase 33 → Phase 34.1**: Cardinality model (`Cardinality::ManyToOne`, `Cardinality::OneToOne`) flows from `model.rs` into `show_dims_for_metric.rs` fan-trap filtering. Verified in 34.1-VERIFICATION lines 104/133.
2. **Phase 33 → Phase 34.1**: `ancestors_to_root` and `collect_derived_metric_source_tables` (pub(crate) in `expand.rs`) imported by `show_dims_for_metric.rs`. Verified in 34.1-VERIFICATION key link table.
3. **Phase 34.1 → Phase 34.1.1**: SHOW VTab infrastructure reused — `parse_show_filter_clauses` injects WHERE/LIMIT into same VTab SELECT statements. Verified in 34.1.1-VERIFICATION.
4. **Phase 34 → Phase 34.1**: DuckDB 1.5.0 `parser_extension_compat.hpp` works with all new DDL forms (ALTER, 6 SHOW variants). Evidenced by all Phase 34.1 and 34.1.1 sqllogictests passing.
5. **Phase 36 → Phase 33**: `description.yml` hello_world uses UNIQUE-constraint syntax (no cardinality keywords). Verified in 36-VERIFICATION.
6. **Phase 36 → Phases 33/34.1/34.1.1**: `examples/snowflake_parity.py` exercises UNIQUE constraints, ALTER RENAME, SHOW commands, LIKE/STARTS WITH/LIMIT, FOR METRIC. Verified in 36-VERIFICATION.
7. **Phase 36 → Phase 34**: MAINTAINER.md documents dual-branch strategy from Phase 34. Verified in 36-VERIFICATION.
8. **Phase 35 → Phases 34.1/34.1.1**: Docs reference all DDL commands. Sphinx builds clean with -W. Verified in 35-VERIFICATION.

### E2E User Flows

| Flow | Steps | Status |
|------|-------|--------|
| Define → Query | CREATE SEMANTIC VIEW (UNIQUE, PK/FK) → semantic_view() with fan-trap detection | Verified (Phases 33, 34.1 sqllogictests) |
| Inspect → Filter | SHOW SEMANTIC DIMS/METRICS/FACTS → LIKE/STARTS WITH/LIMIT → FOR METRIC | Verified (Phases 34.1, 34.1.1 sqllogictests) |
| Modify → Re-query | ALTER SEMANTIC VIEW RENAME TO → query under new name | Verified (Phase 34.1 sqllogictest Test 1) |

## Nyquist Compliance

| Phase | VALIDATION.md | Compliant | Wave 0 | Action |
|-------|---------------|-----------|--------|--------|
| 33 | exists | false | false | `/gsd:validate-phase 33` |
| 34 | exists | false | false | `/gsd:validate-phase 34` |
| 34.1 | exists | false | false | `/gsd:validate-phase 34.1` |
| 34.1.1 | exists | false | false | `/gsd:validate-phase 34.1.1` |
| 35 | exists | false | false | `/gsd:validate-phase 35` |
| 36 | exists | false | false | `/gsd:validate-phase 36` |

All 6 phases have VALIDATION.md stubs but none completed Nyquist validation. This is non-blocking — all phases have comprehensive VERIFICATION.md reports (except Phase 34) with key link tables and behavioral spot-checks.

## Tech Debt Summary

### v0.5.4-Specific

| Phase | Item | Severity |
|-------|------|----------|
| 34 | Missing VERIFICATION.md (procedural gap, not functional) | Low |
| 36 | CREG-04/05 are human-action checkpoints awaiting post-milestone steps | Low |
| 36 | description.yml `ref: PLACEHOLDER_COMMIT_SHA` (replaced after squash-merge) | Info |

### Inherited (from TECH-DEBT.md)

| Item | Status | Impact |
|------|--------|--------|
| DDL pipeline all-VARCHAR result forwarding | Open | Low — DDL results are single-digit rows |
| FFI execution layer not fuzz-covered | Open | Mitigated by sqllogictest integration coverage |
| DuckDB exact version pinning | Open | Mitigated by Version Monitor CI workflow |
| Native EXPLAIN interception | Blocked | Architecturally impossible from loadable extension |

### Source Code Quality

- **No TODOs, FIXMEs, or HACKs** in `src/` directory
- **482 Rust tests** passing (392 + 6 proptest + 36 PBT + 42 integration + 5 vector ref + 1 doc)
- **18 sqllogictest files** passing
- **15,786 Rust LOC** in `src/`
- **113 commits** in milestone, +26,327/-3,395 lines across 156 files

## Milestone Statistics

| Metric | Value |
|--------|-------|
| Phases | 6 (+ 2 inserted: 34.1, 34.1.1) |
| Plans | 11 completed |
| Quick Tasks | 5 (hierarchies removal, Windows CI fix, Pygments lexer, optional PK, SHOW VIEWS filtering) |
| Timeline | 2026-03-15 to 2026-03-27 (13 days) |
| Commits | 113 |
| Files Changed | 156 |
| LOC Delta | +26,327 / -3,395 |
| Rust Tests | 482 |
| sqllogictest Files | 18 |

---

_Audited: 2026-03-27T14:00:00Z_
_Auditor: Claude (milestone-audit orchestrator)_
