docs(06-04): complete tab-vms global site consumption plan

- Add 06-04-SUMMARY.md with all task details and self-check
- Update STATE.md: progress bar 80%, decisions, session record
- Update ROADMAP.md: phase 6 now 4/5 plans complete (In Progress)
- Mark SITE-02 complete in REQUIREMENTS.md

.planning/REQUIREMENTS.md

@@ -8,7 +8,7 @@
 ### Global Site Selection
 
 - [x] **SITE-01**: User can select one or multiple target sites from the toolbar and all feature tabs use that selection as default
-- [ ] **SITE-02**: User can override global site selection per-tab for single-site operations
+- [x] **SITE-02**: User can override global site selection per-tab for single-site operations
 
 ### User Access Audit
 
@@ -46,7 +46,7 @@ None deferred — all active requirements scoped to v1.1.
 | Requirement | Phase | Status |
 |-------------|-------|--------|
 | SITE-01 | Phase 6 | Complete |
-| SITE-02 | Phase 6 | Pending |
+| SITE-02 | Phase 6 | Complete |
 | UACC-01 | Phase 7 | Pending |
 | UACC-02 | Phase 7 | Pending |
 | SIMP-01 | Phase 8 | Pending |

.planning/ROADMAP.md

@@ -36,7 +36,7 @@
   2. Selecting sites in the toolbar causes all feature tabs to default to those sites when an operation is run
   3. A user can override the global selection on any individual tab without clearing the global state
   4. The global site selection persists across tab switches within the same session
-**Plans:** 3/5 plans executed
+**Plans:** 4/5 plans executed
 Plans:
 - [ ] 06-01-PLAN.md — GlobalSitesChangedMessage + FeatureViewModelBase extension
 - [ ] 06-02-PLAN.md — MainWindowViewModel global selection state + command
@@ -86,7 +86,7 @@ Plans:
 | 3. Storage and File Operations | v1.0 | 8/8 | Complete | 2026-04-02 |
 | 4. Bulk Operations and Provisioning | v1.0 | 10/10 | Complete | 2026-04-03 |
 | 5. Distribution and Hardening | v1.0 | 3/3 | Complete | 2026-04-03 |
-| 6. Global Site Selection | 3/5 | In Progress|  | - |
+| 6. Global Site Selection | 4/5 | In Progress|  | - |
 | 7. User Access Audit | v1.1 | 0/? | Not started | - |
 | 8. Simplified Permissions | v1.1 | 0/? | Not started | - |
 | 9. Storage Visualization | v1.1 | 0/? | Not started | - |

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: completed
-stopped_at: Completed 06-03-PLAN.md — toolbar Select Sites button, localization keys, and dialog factory wiring done
+stopped_at: Completed 06-04-PLAN.md — all 6 tab VMs wired to OnGlobalSitesChanged with local override protection
-last_updated: "2026-04-07T08:08:43.719Z"
+last_updated: "2026-04-07T08:10:03.678Z"
 last_activity: 2026-04-07 — Roadmap created (Phases 6-9), 10/10 requirements mapped
 progress:
   total_phases: 4
   completed_phases: 0
   total_plans: 5
-  completed_plans: 3
+  completed_plans: 4
 ---
 
 # Project State
@@ -45,6 +45,7 @@ Phase 6 [ ] → Phase 7 [ ] → Phase 8 [ ] → Phase 9 [ ]
 | Phase 06-global-site-selection P02 | 8 | 1 tasks | 1 files |
 | Phase 06-global-site-selection P01 | 2 | 2 tasks | 3 files |
 | Phase 06-global-site-selection P03 | 2 | 3 tasks | 5 files |
+| Phase 06-global-site-selection P04 | 2 | 3 tasks | 6 files |
 
 ## Accumulated Context
 
@@ -62,6 +63,9 @@ Decisions are logged in PROJECT.md Key Decisions table.
 - [Phase 06-01]: FeatureViewModelBase.OnGlobalSitesReceived (private) updates GlobalSites then calls OnGlobalSitesChanged (protected virtual) — separates storage from derived class hooks
 - [Phase 06-03]: Added using SharepointToolbox.Core.Models to MainWindow.xaml.cs for TenantProfile in SitePickerDialog factory lambda
 - [Phase 06-03]: toolbar.selectSites.tooltipDisabled added to resources but not wired in XAML — WPF Button disabled tooltip requires style trigger (deferred)
+- [Phase 06-global-site-selection]: PermissionsViewModel uses _hasLocalSiteOverride guard for SelectedSites; site picker sets flag, tenant switch resets it
+- [Phase 06-global-site-selection]: Single-site VMs use partial void OnSiteUrlChanged to detect local typing; clearing field reverts to global
+- [Phase 06-global-site-selection]: BulkMembersViewModel confirmed excluded: no SiteUrl field, CSV-driven per-row site URLs
 
 ### Pending Todos
 
@@ -73,6 +77,6 @@ None.
 
 ## Session Continuity
 
-Last session: 2026-04-07T08:08:43.717Z
+Last session: 2026-04-07T08:10:03.675Z
-Stopped at: Completed 06-03-PLAN.md — toolbar Select Sites button, localization keys, and dialog factory wiring done
+Stopped at: Completed 06-04-PLAN.md — all 6 tab VMs wired to OnGlobalSitesChanged with local override protection
 Resume file: None

.planning/phases/06-global-site-selection/06-04-SUMMARY.md

@@ -0,0 +1,119 @@
+---
+phase: 06-global-site-selection
+plan: 04
+subsystem: tab-viewmodels
+tags: [wpf, mvvm, community-toolkit, global-sites, override-pattern]
+
+# Dependency graph
+requires:
+  - 06-01 (FeatureViewModelBase.OnGlobalSitesChanged virtual hook)
+provides:
+  - PermissionsViewModel.OnGlobalSitesChanged (multi-site: pre-populates SelectedSites)
+  - StorageViewModel.OnGlobalSitesChanged (single-site: pre-fills SiteUrl)
+  - SearchViewModel.OnGlobalSitesChanged (single-site: pre-fills SiteUrl)
+  - DuplicatesViewModel.OnGlobalSitesChanged (single-site: pre-fills SiteUrl)
+  - FolderStructureViewModel.OnGlobalSitesChanged (single-site: pre-fills SiteUrl)
+  - TransferViewModel.OnGlobalSitesChanged (single-site: pre-fills SourceSiteUrl)
+affects:
+  - 06-05-per-tab-override (consumes GlobalSites in RunOperationAsync as fallback)
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "partial void OnXxxChanged — CommunityToolkit partial property change notification used to detect local user input and set override flag"
+    - "_hasLocalSiteOverride / _hasLocalSourceSiteOverride field pattern — prevents global site changes from overwriting user's local entry"
+    - "Tenant switch resets override flag — ensures fresh tenant starts with global site pre-fill active"
+
+key-files:
+  created: []
+  modified:
+    - SharepointToolbox/ViewModels/Tabs/PermissionsViewModel.cs
+    - SharepointToolbox/ViewModels/Tabs/StorageViewModel.cs
+    - SharepointToolbox/ViewModels/Tabs/SearchViewModel.cs
+    - SharepointToolbox/ViewModels/Tabs/DuplicatesViewModel.cs
+    - SharepointToolbox/ViewModels/Tabs/FolderStructureViewModel.cs
+    - SharepointToolbox/ViewModels/Tabs/TransferViewModel.cs
+
+key-decisions:
+  - "PermissionsViewModel uses _hasLocalSiteOverride to guard SelectedSites; site picker dialog sets flag to true, tenant switch resets it to false"
+  - "Single-site VMs use partial void OnSiteUrlChanged to detect local typing; clearing the field reverts to global, non-empty different value sets override"
+  - "BulkMembersViewModel excluded: confirmed no SiteUrl field (CSV-driven per-row site URLs)"
+  - "SettingsViewModel, BulkSitesViewModel, TemplatesViewModel excluded per CONTEXT decisions — not modified"
+
+# Metrics
+duration: 2min
+completed: 2026-04-07
+requirements-completed:
+  - SITE-01
+  - SITE-02
+---
+
+# Phase 06 Plan 04: Tab ViewModels Global Site Consumption Summary
+
+**All 6 consuming tab ViewModels wired to override OnGlobalSitesChanged — PermissionsViewModel pre-populates SelectedSites (multi-site), 4 single-site tabs pre-fill SiteUrl, TransferViewModel pre-fills SourceSiteUrl, all with local-override protection via _hasLocalSiteOverride flag**
+
+## Performance
+
+- **Duration:** ~2 min
+- **Started:** 2026-04-07T08:06:19Z
+- **Completed:** 2026-04-07T08:08:35Z
+- **Tasks:** 3
+- **Files modified:** 6
+
+## Accomplishments
+
+- PermissionsViewModel: Added `OnGlobalSitesChanged` override that pre-populates `SelectedSites` from global sites when no local override is active
+- PermissionsViewModel: Site picker dialog (`ExecuteOpenSitePicker`) now sets `_hasLocalSiteOverride = true` before clearing/repopulating SelectedSites
+- PermissionsViewModel: `OnTenantSwitched` resets `_hasLocalSiteOverride = false` so new tenant immediately uses global sites
+- StorageViewModel, SearchViewModel, DuplicatesViewModel, FolderStructureViewModel: Added identical `OnGlobalSitesChanged` + `partial void OnSiteUrlChanged` + `_hasLocalSiteOverride` pattern
+- TransferViewModel: Added `OnGlobalSitesChanged` + `partial void OnSourceSiteUrlChanged` + `_hasLocalSourceSiteOverride` pattern for `SourceSiteUrl`
+- BulkMembersViewModel confirmed excluded — no `SiteUrl` field, CSV-driven, no changes made
+- All 134 tests pass (0 failures, 22 skipped — same baseline as plan 06-01)
+- Build succeeds with 0 errors, 0 warnings
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Update PermissionsViewModel for multi-site global consumption** - `1bf47b5` (feat)
+2. **Task 2: Update single-site tab VMs (Storage, Search, Duplicates, FolderStructure)** - `6a2e4d1` (feat)
+3. **Task 3: Update TransferViewModel and verify BulkMembersViewModel excluded** - `0a91dd4` (feat)
+
+## Files Created/Modified
+
+- `SharepointToolbox/ViewModels/Tabs/PermissionsViewModel.cs` — Added `_hasLocalSiteOverride`, `OnGlobalSitesChanged`, updated `ExecuteOpenSitePicker` and `OnTenantSwitched`
+- `SharepointToolbox/ViewModels/Tabs/StorageViewModel.cs` — Added `_hasLocalSiteOverride`, `OnGlobalSitesChanged`, `OnSiteUrlChanged`, updated `OnTenantSwitched`
+- `SharepointToolbox/ViewModels/Tabs/SearchViewModel.cs` — Added `_hasLocalSiteOverride`, `OnGlobalSitesChanged`, `OnSiteUrlChanged`, updated `OnTenantSwitched`
+- `SharepointToolbox/ViewModels/Tabs/DuplicatesViewModel.cs` — Added `_hasLocalSiteOverride`, `OnGlobalSitesChanged`, `OnSiteUrlChanged`, updated `OnTenantSwitched`
+- `SharepointToolbox/ViewModels/Tabs/FolderStructureViewModel.cs` — Added `_hasLocalSiteOverride`, `OnGlobalSitesChanged`, `OnSiteUrlChanged`, updated `OnTenantSwitched`
+- `SharepointToolbox/ViewModels/Tabs/TransferViewModel.cs` — Added `_hasLocalSourceSiteOverride`, `OnGlobalSitesChanged`, `OnSourceSiteUrlChanged`, updated `OnTenantSwitched`
+
+## Decisions Made
+
+- Used `partial void OnSiteUrlChanged` (CommunityToolkit partial method) to detect user typing — this fires for every programmatic and user-driven change, so the guard `value != GlobalSites[0].Url` ensures global pre-fills don't incorrectly set the override flag
+- When user clears SiteUrl (empty string), the override resets and global is re-applied immediately — design choice to make clearing feel like "go back to global"
+- PermissionsViewModel pattern differs from single-site VMs: it has no `OnSiteUrlChanged` because its authoritative input is `SelectedSites` (managed by site picker dialog), not free text
+
+## Deviations from Plan
+
+None — plan executed exactly as written. BulkMembersViewModel was confirmed to have no `SiteUrl` field as expected.
+
+## Issues Encountered
+
+None.
+
+## User Setup Required
+
+None — no external service configuration required.
+
+## Self-Check: PASSED
+
+All 7 expected files found. All 3 task commits verified in git log.
+
+## Next Phase Readiness
+
+- All 6 consuming tab VMs now react to `GlobalSitesChangedMessage` automatically
+- Local override pattern is consistent across all tabs — users can type freely without clearing global state
+- Plan 06-05 (per-tab override enforcement in RunOperationAsync) can proceed
+- No blockers