docs(18): complete phase research, validation, and plans

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/phases/18-auto-take-ownership/18-VALIDATION.md

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+---
+phase: 18
+slug: auto-take-ownership
+status: draft
+nyquist_compliant: false
+wave_0_complete: false
+created: 2026-04-09
+---
+
+# Phase 18 — Validation Strategy
+
+> Per-phase validation contract for feedback sampling during execution.
+
+---
+
+## Test Infrastructure
+
+| Property | Value |
+|----------|-------|
+| **Framework** | xUnit 2.9.3 |
+| **Config file** | none — implicit discovery |
+| **Quick run command** | `dotnet test SharepointToolbox.Tests --filter "Category=Unit" --no-build` |
+| **Full suite command** | `dotnet test SharepointToolbox.Tests --no-build` |
+| **Estimated runtime** | ~15 seconds |
+
+---
+
+## Sampling Rate
+
+- **After every task commit:** Run `dotnet test SharepointToolbox.Tests --filter "Category=Unit" --no-build`
+- **After every plan wave:** Run `dotnet test SharepointToolbox.Tests --no-build`
+- **Before `/gsd:verify-work`:** Full suite must be green
+- **Max feedback latency:** 15 seconds
+
+---
+
+## Per-Task Verification Map
+
+| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
+|---------|------|------|-------------|-----------|-------------------|-------------|--------|
+| 18-01-01 | 01 | 1 | OWN-01 | unit | `dotnet test --filter "FullyQualifiedName~SettingsServiceTests"` | ❌ W0 | ⬜ pending |
+| 18-01-02 | 01 | 1 | OWN-01 | unit | `dotnet test --filter "FullyQualifiedName~SettingsViewModelOwnershipTests"` | ❌ W0 | ⬜ pending |
+| 18-01-03 | 01 | 1 | OWN-02 | unit | `dotnet test --filter "FullyQualifiedName~OwnershipElevationServiceTests"` | ❌ W0 | ⬜ pending |
+| 18-02-01 | 02 | 2 | OWN-02 | unit | `dotnet test --filter "FullyQualifiedName~PermissionsViewModelOwnershipTests"` | ❌ W0 | ⬜ pending |
+| 18-02-02 | 02 | 2 | OWN-01 | integration | `dotnet test --filter "FullyQualifiedName~SettingsView"` | ❌ W0 | ⬜ pending |
+
+*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*
+
+---
+
+## Wave 0 Requirements
+
+- [ ] `SharepointToolbox.Tests/Services/OwnershipElevationServiceTests.cs` — stubs for OWN-02 elevation
+- [ ] `SharepointToolbox.Tests/ViewModels/SettingsViewModelOwnershipTests.cs` — stubs for OWN-01 toggle
+- [ ] `SharepointToolbox.Tests/ViewModels/PermissionsViewModelOwnershipTests.cs` — stubs for OWN-02 scan retry
+
+*Existing infrastructure covers framework requirements.*
+
+---
+
+## Manual-Only Verifications
+
+| Behavior | Requirement | Why Manual | Test Instructions |
+|----------|-------------|------------|-------------------|
+| Settings toggle visible in UI | OWN-01 | XAML visual | Open Settings tab, verify checkbox present and defaults to unchecked |
+| Auto-elevated row visually distinct | OWN-02 | XAML visual | Run scan with toggle ON against access-denied site, verify amber highlight |
+
+---
+
+## 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 < 15s
+- [ ] `nyquist_compliant: true` set in frontmatter
+
+**Approval:** pending