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+---
+phase: 9
+slug: ux-tech-debt-closure
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-04-13
+---
+
+# Phase 9 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | pytest >= 8.0 (+ pytest-playwright for e2e) |
+| **Config file** | none — pytest discovers `tests/` by default |
+| **Quick run command** | `pytest tests/ -x -q --ignore=tests/e2e` |
+| **Full suite command** | `pytest tests/ -v` |
+| **E2E command** | `pytest tests/e2e/ -v` (requires `playwright install chromium`) |
+| **Estimated runtime** | ~20s unit/integration, ~15s e2e |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `pytest tests/ -x -q --ignore=tests/e2e`
+- **After every plan wave:** Run `pytest tests/ -v`
+- **Before `/gsd:verify-work`:** Full suite (including `tests/e2e/`) must be green
+- **Max feedback latency:** 30 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| 9-01-01 | 01 | 1 | UX-01 | integration | `pytest tests/test_driver_upload.py::test_upload_500_regression -x` | ❌ W0 | ⬜ pending |
+| 9-01-02 | 01 | 1 | UX-01 | integration | `pytest tests/test_driver_upload.py::test_upload_500_regression -x` | ❌ W0 | ⬜ pending |
+| 9-01-03 | 01 | 1 | UX-01 | integration | `pytest tests/test_driver_upload.py::test_upload_returns_oob_when_called_from_form -x` | ❌ W0 | ⬜ pending |
+| 9-01-04 | 01 | 1 | UX-01 | integration | `pytest tests/test_driver_upload.py::test_upload_oob_autoselects_new_driver -x` | ❌ W0 | ⬜ pending |
+| 9-01-05 | 01 | 1 | UX-01 | integration | `pytest tests/test_printer_form.py -x` | ✅ | ⬜ pending |
+| 9-02-01 | 02 | 2 | UX-02 | e2e | `pytest tests/e2e/test_port_autofill.py -v` | ❌ W0 | ⬜ pending |
+| 9-03-01 | 03 | 1 | UX-03 | integration | `pytest tests/test_script_download.py -x` | ❌ W0 | ⬜ pending |
+| 9-03-02 | 03 | 1 | UX-03 | integration | `pytest tests/test_packages.py::TestCommandPreview::test_detail_page_shows_script_links -x` | ❌ W0 | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+*Task IDs above are placeholders — planner refines to match actual PLAN.md task numbering.*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] `tests/test_driver_upload.py` — add stubs: `test_upload_500_regression`, `test_upload_returns_oob_when_called_from_form`, `test_upload_oob_autoselects_new_driver` (UX-01)
+- [ ] `tests/e2e/__init__.py` + `tests/e2e/conftest.py` — live server fixture (uvicorn thread on 127.0.0.1, readiness poll via `/health`, session-scoped tmp data dir) (UX-02)
+- [ ] `tests/e2e/test_port_autofill.py` — stub Playwright test for UX-02
+- [ ] `tests/test_script_download.py` — stubs for `.ps1` URL shape routes (UX-03)
+- [ ] `tests/test_packages.py::TestCommandPreview::test_detail_page_shows_script_links` — stub (UX-03)
+- [ ] Dev deps install: add `pytest-playwright` and `playwright` to `requirements-dev.txt`; run `pip install -r requirements-dev.txt && playwright install chromium`
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| Live browser visual confirmation of IP→port auto-fill | UX-02 | Success criterion explicitly requires "observed live in a real browser and recorded in VALIDATION.md" | Run `pytest tests/e2e/test_port_autofill.py -v --headed`, observe the browser window, save terminal output snippet here when executed |
+| Live browser visual confirmation of driver upload OOB refresh | UX-01 | Success criterion explicitly requires "without manually reloading the page" — Playwright headless covers this, but a live eyeball check is recommended once | Start app, open printer form, upload driver ZIP, confirm dropdown updates without F5 |
+| Live browser click of 3 script download links | UX-03 | Success criterion says "can click direct download links ... individually" | Start app, open printer detail page with a driver selected, click each of the 3 links, confirm `.ps1` file downloads |
+
+*Automated coverage is primary; manual checks serve as the live-verification evidence required by the phase success criteria.*
+
+---
+
+## 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 < 30s (quick suite)
+- [ ] `nyquist_compliant: true` set in frontmatter (after planner finalizes task IDs)
+
+**Approval:** pending