docs(phase-16): add validation strategy

.planning/phases/16-tablo-detail/16-VALIDATION.md

@@ -0,0 +1,78 @@
+---
+phase: 16
+slug: tablo-detail
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-05-16
+---
+
+# Phase 16 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | go test |
+| **Config file** | `go-backend/go.mod` |
+| **Quick run command** | `cd go-backend && go test ./internal/web/handlers/... -run TestTablo` |
+| **Full suite command** | `cd go-backend && go test ./...` |
+| **Estimated runtime** | ~5 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `cd go-backend && go test ./internal/web/handlers/... -run TestTablo`
+- **After every plan wave:** Run `cd go-backend && go test ./...`
+- **Before `/gsd-verify-work`:** Full suite must be green
+- **Max feedback latency:** 10 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Threat Ref | Secure Behavior | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|------------|-----------------|-----------|-------------------|-------------|--------|
+| 16-01-01 | 01 | 1 | DETAIL-01 | — | N/A (template/CSS only) | build | `cd go-backend && go build ./...` | ✅ | ⬜ pending |
+| 16-01-02 | 01 | 1 | DETAIL-02 | — | N/A | build | `cd go-backend && go build ./...` | ✅ | ⬜ pending |
+| 16-02-01 | 02 | 1 | DETAIL-03 | — | N/A | unit | `cd go-backend && go test ./internal/web/handlers/... -run TestTask` | ✅ | ⬜ pending |
+| 16-03-01 | 03 | 2 | DETAIL-04 | — | N/A | unit | `cd go-backend && go test ./internal/web/handlers/... -run TestFile` | ✅ | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+Existing infrastructure covers all phase requirements. No new test stubs needed — the phase goal is restyling existing functionality. Handler tests must remain green throughout.
+
+- [ ] Baseline: `cd go-backend && go test ./...` passes before any Phase 16 changes
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| Tablo detail header renders project-card-top layout | DETAIL-01 | Visual/CSS — no automated assertion | Navigate to `/tablos/{id}`, verify title + avatar + action controls render as specified in UI-SPEC header contract |
+| Kanban columns render horizontally with status grouping | DETAIL-02 | Visual layout | Open tablo with tasks in multiple statuses; verify 3 columns (Todo / In Progress / Done) render side by side |
+| Etape group headers render with color dot | DETAIL-03 | Visual | Open tablo with etapes assigned to tasks; verify group header shows color dot + etape name |
+| File table row actions (download, delete) respond | DETAIL-04 | HTMX interaction | Upload a file to a tablo; verify download link and delete button trigger correct HTMX responses |
+
+---
+
+## 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