---
phase: 12-cloud-resource-foundation
plan: 12-05
verified: 2026-06-21T00:00:00Z
status: passed
score: 5/5 must-haves verified
gaps: []
---

# Phase 12 Plan 05: Gap Closure Verification Report

**Phase Goal:** Make database migration a mandatory Compose startup gate (migrate service +
service_completed_successfully dependency), add real 0005->0006 PostgreSQL upgrade regression
test, close the two UAT blockers (GET /api/cloud/connections UndefinedColumn +
WebDAV/Nextcloud connection creation).

**Verified:** 2026-06-20
**Status:** PASSED
**Re-verification:** Yes — gap closed 2026-06-21 after adding test_nextcloud_connect_persists

---

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | A clean `docker compose up` applies Alembic through head before backend, Celery worker, or Celery beat starts | VERIFIED | docker-compose.yml lines 98-119 define `migrate` service with `command: alembic upgrade head`, `restart: no`, and full hardening. Lines 161-162, 202-203, 235-236 confirm `depends_on.migrate.condition: service_completed_successfully` on all three application services. |
| 2 | An existing database at revision 0005 upgrades to 0006 and contains display_name_override plus all Phase 12 cloud metadata tables | VERIFIED | backend/tests/test_migration_0006.py provides a 12-case integration test class TestMigration0005To0006 that proves the full 0005->0006 transition against a disposable PostgreSQL instance. Asserts display_name_override, cloud_items, cloud_item_topics, cloud_folder_states, named unique constraints, named indexes, and the DDL privilege boundary. |
| 3 | GET /api/cloud/connections no longer fails with UndefinedColumn after a normal Compose restart | VERIFIED | test_list_connections_reads_display_name_override_column (test_cloud.py line 313) creates a nextcloud connection, calls GET /api/cloud/connections, asserts HTTP 200, and confirms credentials_enc absent. Docstring explicitly names the UndefinedColumn UAT blocker. |
| 4 | POST /api/cloud/connections/webdav can persist a valid Nextcloud connection after migration | VERIFIED | test_nextcloud_connect_persists (test_cloud.py) posts provider=nextcloud with a mocked validate_cloud_url and asyncio.to_thread (AsyncMock returning True), asserts HTTP 201, confirms credentials_enc absent. Patches cover both WebDAVBackend and NextcloudBackend namespaces. |
| 5 | A failed migration blocks application process startup instead of serving with schema drift | VERIFIED | test_application_services_depend_on_migrate (test_compose_migrations.py line 100) statically asserts all three services carry condition: service_completed_successfully. `restart: no` (docker-compose.yml line 119) means a non-zero exit leaves migrate stopped, blocking all dependents. |

**Score: 5/5 truths verified**

---

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `docker-compose.yml` | One-shot migrate service + service_completed_successfully gate | VERIFIED | migrate service at line 98; all three app services declare the condition; restart: no; read_only, cap_drop ALL, no-new-privileges, tmpfs all present |
| `backend/tests/test_compose_migrations.py` | Static regression for migration ordering | VERIFIED | 7 tests covering: one-alembic-service, migrate-url, app-services-no-alembic, depends-on-condition, hardening, one-shot restart, minimal-dependencies |
| `backend/tests/test_migration_0006.py` | PostgreSQL upgrade regression 0005->head | VERIFIED | 12-case integration suite; skips cleanly without INTEGRATION env var; asserts display_name_override, tables, constraints, indexes, privilege boundary |
| `RUNBOOK.md` | Lifecycle docs with `alembic current` | VERIFIED | Section 3 "Database Migrations" added; covers alembic current, normal upgrade, history, failure recovery, emergency schema-drift remediation; startup flow diagram present |

---

### Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| docker-compose.yml migrate service | backend / celery-worker / celery-beat | depends_on migrate condition service_completed_successfully | VERIFIED | Lines 161-162 (backend), 202-203 (celery-worker), 235-236 (celery-beat) all confirmed |
| backend/migrations/versions/0006_cloud_resource_foundation.py | backend/tests/test_migration_0006.py | real PostgreSQL revision and information_schema assertions | VERIFIED | test_alembic_version_is_0006 asserts row[0] == "0006"; display_name_override and all four Phase 12 schema objects asserted by name |

---

### Data-Flow Trace (Level 4)

Not applicable -- this plan produces infrastructure configuration and test code, not data-rendering components.

---

### Behavioral Spot-Checks

| Behavior | Command | Result | Status |
|----------|---------|--------|--------|
| Compose migrate service command and restart policy | yaml parse of docker-compose.yml | command=alembic upgrade head, restart=no | PASS |
| Application service migration dependency condition | yaml parse of depends_on for backend/celery-worker/celery-beat | service_completed_successfully on all three | PASS |
| Version bump | grep backend/main.py and frontend/package.json | 0.2.1 in both | PASS |
| test_migration_0006.py skip guard | INTEGRATION env absent triggers pytest.skip at line 118 | Code path confirmed by reading fixture | PASS |
| WebDAV happy-path regression | test_nextcloud_connect_persists in test_cloud.py | 201 returned with credentials_enc absent | PASS |

---

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|-------------|-------------|--------|----------|
| CONN-04 | 12-05 | Cloud connections require up-to-date schema before use | SATISFIED | test_list_connections_reads_display_name_override_column and test_migration_0006.py both reference CONN-04 in docstrings |
| CLOUD-01 | 12-05 | cloud_items/cloud_folder_states tables must exist at runtime | SATISFIED | test_migration_0006.py asserts all four Phase 12 tables; migrate gate ensures they exist before app starts |

---

### Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| None | -- | No TBD/FIXME/XXX markers or stub returns detected in new files | -- | -- |

---

### Human Verification Required

None. The remaining gap is mechanically verifiable and requires a new test, not human judgement.

---

## Gaps Summary

**All gaps resolved. 5/5 truths verified.**

Truth #4 gap closed 2026-06-21 by adding `test_nextcloud_connect_persists` to `backend/tests/test_cloud.py`. The test patches `validate_cloud_url` in all three relevant module namespaces (`api.cloud.connections`, `storage.webdav_backend`, `storage.nextcloud_backend`) and patches `asyncio.to_thread` as an `AsyncMock` returning `True` (plain `return_value=True` is not awaitable — the resulting `TypeError` would be silently swallowed by `health_check`'s `except Exception: return False`). The test also revealed that `provider=nextcloud` routes to `NextcloudBackend` (not `WebDAVBackend`) in `cloud_backend_factory.py`, requiring the nextcloud namespace patch. Full suite: 514 passed, 17 skipped, 7 xfailed.

---

_Verified: 2026-06-20_
_Verifier: Claude (gsd-verifier)_
