docs(07-02): complete UserAccessAuditService plan

- Add 07-02-SUMMARY.md with implementation details
- Update STATE.md: progress 62%, decisions, session
- Update ROADMAP.md: phase 7 now 3/8 plans complete

.planning/ROADMAP.md

@@ -53,7 +53,7 @@ Plans:
   2. Running the audit returns a list of all access entries the user holds across the selected sites
   3. Results distinguish between direct role assignments, SharePoint group memberships, and inherited access
   4. Results can be exported to CSV or HTML in the same format established by v1.0 export patterns
-**Plans:** 1/8 plans executed
+**Plans:** 3/8 plans executed
 Plans:
 - [ ] 07-01-PLAN.md — UserAccessEntry model + service interfaces (Wave 1)
 - [ ] 07-02-PLAN.md — UserAccessAuditService implementation (Wave 2)
@@ -96,6 +96,6 @@ Plans:
 | 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 | 5/5 | Complete   | 2026-04-07 | - |
-| 7. User Access Audit | 1/8 | In Progress|  | - |
+| 7. User Access Audit | 3/8 | In Progress|  | - |
 | 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 07-03-PLAN.md
+stopped_at: Completed 07-02-PLAN.md
-last_updated: "2026-04-07T10:40:07.964Z"
+last_updated: "2026-04-07T10:40:45.186Z"
 last_activity: 2026-04-07 — Roadmap created (Phases 6-9), 10/10 requirements mapped
 progress:
   total_phases: 4
   completed_phases: 1
   total_plans: 13
-  completed_plans: 7
+  completed_plans: 8
 ---
 
 # Project State
@@ -49,6 +49,7 @@ Phase 6 [ ] → Phase 7 [ ] → Phase 8 [ ] → Phase 9 [ ]
 | Phase 06-global-site-selection P05 | 2 | 1 tasks | 1 files |
 | Phase 07-user-access-audit P01 | 5 | 2 tasks | 3 files |
 | Phase 07-user-access-audit P03 | 2 | 1 tasks | 1 files |
+| Phase 07-user-access-audit P02 | 1 | 1 tasks | 1 files |
 
 ## Accumulated Context
 
@@ -76,6 +77,8 @@ Decisions are logged in PROJECT.md Key Decisions table.
 - [Phase 07-03]: Minimum 2-character query guard prevents overly broad Graph API requests
 - [Phase 07-03]: OData single-quote escaping (replace apostrophe with two apostrophes) prevents injection in startsWith filter
 - [Phase 07-03]: ConsistencyLevel=eventual and Count=true both required for startsWith on Graph directory objects
+- [Phase 07-user-access-audit]: TenantProfile.ClientId empty in service — session pre-authenticated at ViewModel level; SessionManager returns cached context by URL key
+- [Phase 07-user-access-audit]: Bidirectional contains matching for user login — handles both plain email and full SharePoint claim formats
 
 ### Pending Todos
 
@@ -87,6 +90,6 @@ None.
 
 ## Session Continuity
 
-Last session: 2026-04-07T10:40:07.961Z
+Last session: 2026-04-07T10:40:45.184Z
-Stopped at: Completed 07-03-PLAN.md
+Stopped at: Completed 07-02-PLAN.md
 Resume file: None

.planning/phases/07-user-access-audit/07-02-SUMMARY.md

@@ -0,0 +1,79 @@
+---
+phase: 07-user-access-audit
+plan: 02
+subsystem: audit-engine
+tags: [service, business-logic, user-access-audit, permissions, transform]
+dependency_graph:
+  requires: [07-01]
+  provides: [UserAccessAuditService]
+  affects: [07-04, 07-05, 07-06, 07-07, 07-08]
+tech_stack:
+  added: []
+  patterns: [iterator pattern (yield return), HashSet for O(1) lookup, case-insensitive contains matching]
+key_files:
+  created:
+    - SharepointToolbox/Services/UserAccessAuditService.cs
+  modified: []
+decisions:
+  - "TenantProfile.ClientId set to empty string in service — session must be pre-authenticated at ViewModel level; SessionManager returns cached context by URL key without requiring ClientId again"
+  - "User matching uses bidirectional contains (loginLower.Contains(target) || target.Contains(loginLower)) to handle both plain email and full SharePoint claim formats"
+  - "Each permission level emits a separate UserAccessEntry row (fully denormalized) — consistent with 07-01 design decision"
+metrics:
+  duration_minutes: 5
+  completed_date: "2026-04-07"
+  tasks_completed: 1
+  files_created: 1
+  files_modified: 0
+---
+
+# Phase 7 Plan 02: UserAccessAuditService Implementation Summary
+
+**One-liner:** UserAccessAuditService scans PermissionsService results across multiple sites, filters by target user logins via bidirectional contains matching, and emits fully-denormalized UserAccessEntry rows with access type classification, high-privilege detection, and external user flagging.
+
+## What Was Built
+
+**UserAccessAuditService.cs** — Core business logic service implementing `IUserAccessAuditService`:
+
+1. **Multi-site loop** — Iterates sites list, builds a `TenantProfile` per site (TenantUrl = site URL), obtains a `ClientContext` via the injected `ISessionManager`, then delegates to `IPermissionsService.ScanSiteAsync` for raw permission data. Progress is reported per site.
+
+2. **TransformEntries** — Static iterator method that splits semicolon-delimited `UserLogins`, `Users`, and `PermissionLevels` fields from each `PermissionEntry`. For each user/level combination that matches a target login, yields a `UserAccessEntry` record. Uses `yield return` for lazy evaluation.
+
+3. **User matching** — Case-insensitive bidirectional contains: `loginLower.Contains(target) || target.Contains(loginLower)`. Handles both plain email addresses and full SharePoint claim format (`i:0#.f|membership|alice@contoso.com`).
+
+4. **ClassifyAccessType** — Maps `HasUniquePermissions` + `GrantedThrough` to `AccessType` enum: `!HasUniquePermissions` → Inherited; `GrantedThrough` starts with "SharePoint Group:" → Group; else Direct.
+
+5. **HighPrivilegeLevels** — Static `HashSet<string>` (case-insensitive) containing "Full Control" and "Site Collection Administrator". O(1) lookup per entry.
+
+## Tasks
+
+| # | Task | Status | Commit |
+|---|------|--------|--------|
+| 1 | Implement UserAccessAuditService | Done | 44b238e |
+
+## Decisions Made
+
+1. **ClientId empty in service** — `TenantProfile.ClientId` is set to `string.Empty` when constructing per-site profiles. `SessionManager` validates ClientId only when creating a new context. Since the user authenticates at the ViewModel layer before invoking the service, the session is already cached and returned by URL key without re-checking ClientId.
+
+2. **Bidirectional contains matching** — The target login could be a short email ("alice@contoso.com") while the PermissionEntry stores the full claim ("i:0#.f|membership|alice@contoso.com"), or vice versa. Bidirectional contains handles both cases without requiring callers to normalize their input format.
+
+3. **Fully denormalized output** — Consistent with the 07-01 decision: one row per user + object + permission level. A single PermissionEntry with 2 users and 3 permission levels emits up to 6 UserAccessEntry rows.
+
+## Deviations from Plan
+
+None — plan executed exactly as written.
+
+## Verification
+
+- `dotnet build SharepointToolbox/SharepointToolbox.csproj` — 0 errors, 0 warnings
+- UserAccessAuditService implements IUserAccessAuditService interface
+- TransformEntries splits semicolon-delimited logins/names/levels correctly
+- ClassifyAccessType maps HasUniquePermissions + GrantedThrough to AccessType enum
+- HighPrivilegeLevels HashSet contains "Full Control" and "Site Collection Administrator"
+
+## Self-Check: PASSED
+
+Files confirmed present:
+- FOUND: SharepointToolbox/Services/UserAccessAuditService.cs
+
+Commits confirmed:
+- FOUND: 44b238e