docs: bring phase 14 planning files into worktree

.planning/phases/14-postgresql-migration/14-VALIDATION.md

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+---
+phase: 14
+slug: postgresql-migration
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-04-04
+---
+
+# Phase 14 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | bun test |
+| **Config file** | none — uses bun built-in test runner |
+| **Quick run command** | `bun test tests/` |
+| **Full suite command** | `bun test tests/` |
+| **Estimated runtime** | ~10 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `bun test tests/`
+- **After every plan wave:** Run `bun test tests/`
+- **Before `/gsd:verify-work`:** Full suite must be green
+- **Max feedback latency:** 10 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| TBD | TBD | TBD | DB-01 | integration | `bun test tests/` | ❌ W0 | ⬜ pending |
+| TBD | TBD | TBD | DB-02 | integration | `bun test tests/` | ❌ W0 | ⬜ pending |
+| TBD | TBD | TBD | DB-03 | integration | `bun test tests/` | ❌ W0 | ⬜ pending |
+| TBD | TBD | TBD | DB-04 | integration | `bun test tests/` | ❌ W0 | ⬜ pending |
+| TBD | TBD | TBD | DB-05 | smoke | `docker compose -f docker-compose.dev.yml up -d` | ❌ W0 | ⬜ pending |
+
+*Status: <20><> pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] `tests/helpers/db.ts` — Rewrite to use PGlite instead of bun:sqlite
+- [ ] Existing test files updated from sync to async patterns
+
+*Test infrastructure exists but needs migration from SQLite to PGlite.*
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| SQLite data migration preserves all records | DB-04 | One-time script, not automatable in CI | Run migration script against test SQLite DB, verify row counts match |
+| Docker Compose starts Postgres | DB-05 | Requires Docker runtime | Run `docker compose -f docker-compose.dev.yml up -d`, verify `pg_isready` |
+
+---
+
+## Validation Sign-Off
+
+- [ ] All tasks have `<automated>` verify or Wave 0 dependencies
+- [ ] Sampling continuity: no 3 consecutive tasks without automated verify
+- [ ] Wave 0 covers all MISSING references
+- [ ] No watch-mode flags
+- [ ] Feedback latency < 10s
+- [ ] `nyquist_compliant: true` set in frontmatter
+
+**Approval:** pending