docs(14-01): complete directory UI infrastructure plan

- SUMMARY.md with 3 tasks, 4 commits, 5 files modified
- STATE.md updated with position and decisions
- ROADMAP.md updated with phase 14 progress (1/2 plans)
- REQUIREMENTS.md: UDIR-05 marked complete

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

.planning/phases/14-user-directory-view/14-01-SUMMARY.md

@@ -0,0 +1,103 @@
+---
+phase: 14-user-directory-view
+plan: 01
+subsystem: ui
+tags: [wpf, localization, resx, relay-command, datagrid, directory]
+
+# Dependency graph
+requires:
+  - phase: 13-user-directory-data
+    provides: "GraphDirectoryUser model, IGraphUserDirectoryService, directory browse mode properties on ViewModel"
+provides:
+  - "14 localization keys (EN+FR) for directory browse UI"
+  - "SelectDirectoryUserCommand bridging directory selection to audit pipeline"
+  - "DirectoryDataGrid_MouseDoubleClick code-behind event handler"
+affects: [14-user-directory-view]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "SelectDirectoryUserCommand follows same RelayCommand<T> + duplicate UPN check pattern as AddUserCommand"
+    - "Code-behind event handler pattern: extract model from DataGrid.SelectedItem, invoke ViewModel command"
+
+key-files:
+  created: []
+  modified:
+    - "SharepointToolbox/Localization/Strings.resx"
+    - "SharepointToolbox/Localization/Strings.fr.resx"
+    - "SharepointToolbox/ViewModels/Tabs/UserAccessAuditViewModel.cs"
+    - "SharepointToolbox/Views/Tabs/UserAccessAuditView.xaml.cs"
+    - "SharepointToolbox.Tests/ViewModels/UserAccessAuditViewModelDirectoryTests.cs"
+
+key-decisions:
+  - "SelectDirectoryUserCommand does not clear SearchQuery/SearchResults since it operates in browse mode context"
+  - "ExecuteSelectDirectoryUser placed alongside ExecuteAddUser/ExecuteRemoveUser in command implementations section"
+
+patterns-established:
+  - "Directory-to-audit bridge: GraphDirectoryUser -> GraphUserResult conversion via SelectDirectoryUserCommand"
+
+requirements-completed: [UDIR-05, UDIR-01]
+
+# Metrics
+duration: 3min
+completed: 2026-04-09
+---
+
+# Phase 14 Plan 01: Directory UI Infrastructure Summary
+
+**Localization keys (EN+FR), SelectDirectoryUserCommand bridging directory selection to audit pipeline, and DataGrid double-click code-behind handler**
+
+## Performance
+
+- **Duration:** 3 min
+- **Started:** 2026-04-09T07:24:15Z
+- **Completed:** 2026-04-09T07:27:00Z
+- **Tasks:** 3
+- **Files modified:** 5
+
+## Accomplishments
+- 14 localization keys added to both EN and FR resource files for directory browse UI
+- SelectDirectoryUserCommand converts GraphDirectoryUser to GraphUserResult and adds to SelectedUsers with duplicate UPN check
+- DirectoryDataGrid_MouseDoubleClick code-behind handler ready for XAML wiring in Plan 14-02
+- 4 new tests added (20 total in directory test file), all passing
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Add localization keys (EN + FR)** - `70e8d12` (feat)
+2. **Task 2: Add SelectDirectoryUserCommand (TDD RED)** - `381081d` (test)
+3. **Task 2: Add SelectDirectoryUserCommand (TDD GREEN)** - `e6ba2d8` (feat)
+4. **Task 3: Add code-behind event handler** - `d1282ce` (feat)
+
+## Files Created/Modified
+- `SharepointToolbox/Localization/Strings.resx` - 14 EN localization keys for directory browse UI
+- `SharepointToolbox/Localization/Strings.fr.resx` - 14 FR localization keys for directory browse UI
+- `SharepointToolbox/ViewModels/Tabs/UserAccessAuditViewModel.cs` - SelectDirectoryUserCommand declaration, initialization in both constructors, ExecuteSelectDirectoryUser method
+- `SharepointToolbox/Views/Tabs/UserAccessAuditView.xaml.cs` - DirectoryDataGrid_MouseDoubleClick handler, using for Core.Models
+- `SharepointToolbox.Tests/ViewModels/UserAccessAuditViewModelDirectoryTests.cs` - 4 new tests (17-20) for SelectDirectoryUserCommand
+
+## Decisions Made
+- SelectDirectoryUserCommand does not clear SearchQuery/SearchResults since it operates in browse mode context (unlike AddUserCommand which clears search state)
+- ExecuteSelectDirectoryUser placed in command implementations section alongside ExecuteAddUser/ExecuteRemoveUser for code locality
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- All infrastructure for Plan 14-02 (XAML view) is in place
+- Localization keys ready for binding
+- SelectDirectoryUserCommand ready for DataGrid double-click binding
+- Code-behind handler ready to be wired via MouseDoubleClick event in XAML
+
+---
+*Phase: 14-user-directory-view*
+*Completed: 2026-04-09*