chore: complete v1.0 milestone

Archive 5 phases (36 plans) to milestones/v1.0-phases/.
Archive roadmap, requirements, and audit to milestones/.
Evolve PROJECT.md with shipped state and validated requirements.
Collapse ROADMAP.md to one-line milestone summary.

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

.planning/milestones/v1.0-REQUIREMENTS.md

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+# Requirements Archive: v1.0 MVP
+
+**Archived:** 2026-04-07
+**Status:** SHIPPED
+
+For current requirements, see `.planning/REQUIREMENTS.md`.
+
+---
+
+# Requirements: SharePoint Toolbox v2
+
+**Defined:** 2026-04-02
+**Core Value:** Administrators can audit and manage SharePoint/Teams permissions and storage across multiple client tenants from a single, reliable desktop application.
+
+## v1 Requirements
+
+Requirements for initial release. Each maps to roadmap phases.
+
+### Foundation
+
+- [x] **FOUND-01**: Application built with C#/WPF (.NET 10 LTS) using MVVM architecture
+- [x] **FOUND-02**: Multi-tenant profile registry — user can create, rename, delete, and switch between tenant profiles (tenant URL, client ID, display name)
+- [x] **FOUND-03**: Multi-tenant session caching — user stays authenticated across tenant switches without re-logging in (MSAL token cache per tenant)
+- [x] **FOUND-04**: Interactive Azure AD OAuth login via browser — no client secrets or certificates stored
+- [x] **FOUND-05**: All long-running operations report progress to the UI in real-time
+- [x] **FOUND-06**: User can cancel any long-running operation mid-execution
+- [x] **FOUND-07**: All errors surface to the user with actionable messages — no silent failures
+- [x] **FOUND-08**: Structured logging for diagnostics (Serilog or equivalent)
+- [x] **FOUND-09**: Localization system supporting English and French with dynamic language switching
+- [x] **FOUND-10**: JSON-based local storage for profiles, settings, and templates (compatible with current app's format for migration)
+- [x] **FOUND-11**: Self-contained single EXE distribution — no .NET runtime dependency for end users
+- [x] **FOUND-12**: Configurable data output folder for exports
+
+### Permissions
+
+- [x] **PERM-01**: User can scan permissions on a single SharePoint site with configurable depth
+- [x] **PERM-02**: User can scan permissions across multiple selected sites in one operation
+- [x] **PERM-03**: Permissions scan includes owners, members, guests, external users, and broken inheritance
+- [x] **PERM-04**: User can choose to include or exclude inherited permissions
+- [x] **PERM-05**: User can export permissions report to CSV (raw data)
+- [x] **PERM-06**: User can export permissions report to interactive HTML (sortable, filterable, groupable by user)
+- [x] **PERM-07**: SharePoint 5,000-item list view threshold handled via pagination — no silent failures on large libraries
+
+### Storage
+
+- [x] **STOR-01**: User can view storage consumption per library on a site
+- [x] **STOR-02**: User can view storage consumption per site with configurable folder depth
+- [x] **STOR-03**: Storage metrics include total size, version size, item count, and last modified date
+- [x] **STOR-04**: User can export storage metrics to CSV
+- [x] **STOR-05**: User can export storage metrics to interactive HTML with collapsible tree view
+
+### File Search
+
+- [x] **SRCH-01**: User can search files across sites using multiple criteria (extension, name/regex, dates, creator, editor)
+- [x] **SRCH-02**: User can configure maximum search results (up to 50,000)
+- [x] **SRCH-03**: User can export search results to CSV
+- [x] **SRCH-04**: User can export search results to interactive HTML (sortable, filterable)
+
+### Duplicate Detection
+
+- [x] **DUPL-01**: User can scan for duplicate files by name, size, creation date, modification date
+- [x] **DUPL-02**: User can scan for duplicate folders by name, subfolder count, file count
+- [x] **DUPL-03**: User can export duplicate report to HTML with grouped display and visual indicators
+
+### Site Templates
+
+- [x] **TMPL-01**: User can capture site structure (libraries, folders, permission groups, logo, settings) as a template
+- [x] **TMPL-02**: User can apply template to create new Communication or Teams site
+- [x] **TMPL-03**: Templates persist locally as JSON
+- [x] **TMPL-04**: User can manage templates (create, rename, delete)
+
+### Folder Structure
+
+- [x] **FOLD-01**: User can create folder structures on a site from a CSV template
+- [x] **FOLD-02**: Example CSV templates provided for common structures
+
+### Bulk Operations
+
+- [x] **BULK-01**: User can transfer files and folders between sites with progress tracking
+- [x] **BULK-02**: User can add members to groups in bulk from CSV
+- [x] **BULK-03**: User can create multiple sites in bulk from CSV
+- [x] **BULK-04**: All bulk operations support cancellation mid-execution
+- [x] **BULK-05**: Bulk operation errors are reported per-item (not silently skipped)
+
+## v2 Requirements
+
+Deferred to after v1 parity is confirmed. New features from project goals.
+
+### User Access Audit
+
+- **UACC-01**: User can export all SharePoint/Teams accesses a specific user has across selected sites
+- **UACC-02**: Export includes direct assignments, group memberships, and inherited access
+
+### Simplified Permissions
+
+- **SIMP-01**: User can toggle plain-language permission labels (e.g., "Can edit files" instead of "Contribute")
+- **SIMP-02**: Permissions report includes summary counts and color coding for untrained readers
+- **SIMP-03**: Configurable detail level (simple/detailed) for reports
+
+### Storage Visualization
+
+- **VIZZ-01**: Storage Metrics tab includes a graph showing space by file type
+- **VIZZ-02**: User can toggle between pie/donut chart and bar chart views
+- **VIZZ-03**: Graph updates when storage scan completes
+
+## Out of Scope
+
+| Feature | Reason |
+|---------|--------|
+| Cross-platform (Mac/Linux) | WPF is Windows-only; not justified for current user base |
+| Real-time monitoring / alerts | Requires background service, webhooks — turns desktop tool into a service |
+| Automated remediation (auto-revoke) | Liability risk; one wrong rule destroys client access |
+| SQLite / database storage | Breaks single-EXE distribution; JSON sufficient |
+| Cloud sync / shared profiles | Requires server infrastructure — out of scope for local tool |
+| AI-powered recommendations | Competes with Microsoft's own Copilot roadmap |
+| Content migration between tenants | Separate product category (ShareGate territory) |
+| Mobile app | Desktop admin tool |
+| OAuth with client secrets/certificates | Interactive login only — no stored credentials |
+| Version history management | Deep separate problem; surface totals in storage metrics only |
+
+## Traceability
+
+Which phases cover which requirements. Updated during roadmap creation.
+
+| Requirement | Phase | Status |
+|-------------|-------|--------|
+| FOUND-01 | Phase 1 | Complete |
+| FOUND-02 | Phase 1 | Complete |
+| FOUND-03 | Phase 1 | Complete |
+| FOUND-04 | Phase 1 | Complete |
+| FOUND-05 | Phase 1 | Complete |
+| FOUND-06 | Phase 1 | Complete |
+| FOUND-07 | Phase 1 | Complete |
+| FOUND-08 | Phase 1 | Complete |
+| FOUND-09 | Phase 1 | Complete |
+| FOUND-10 | Phase 1 | Complete |
+| FOUND-11 | Phase 5 | Complete |
+| FOUND-12 | Phase 1 | Complete |
+| PERM-01 | Phase 2 | Complete |
+| PERM-02 | Phase 2 | Complete |
+| PERM-03 | Phase 2 | Complete |
+| PERM-04 | Phase 2 | Complete |
+| PERM-05 | Phase 2 | Complete |
+| PERM-06 | Phase 2 | Complete |
+| PERM-07 | Phase 2 | Complete |
+| STOR-01 | Phase 3 | Complete |
+| STOR-02 | Phase 3 | Complete |
+| STOR-03 | Phase 3 | Complete |
+| STOR-04 | Phase 3 | Complete |
+| STOR-05 | Phase 3 | Complete |
+| SRCH-01 | Phase 3 | Complete |
+| SRCH-02 | Phase 3 | Complete |
+| SRCH-03 | Phase 3 | Complete |
+| SRCH-04 | Phase 3 | Complete |
+| DUPL-01 | Phase 3 | Complete |
+| DUPL-02 | Phase 3 | Complete |
+| DUPL-03 | Phase 3 | Complete |
+| TMPL-01 | Phase 4 | Complete |
+| TMPL-02 | Phase 4 | Complete |
+| TMPL-03 | Phase 4 | Complete |
+| TMPL-04 | Phase 4 | Complete |
+| FOLD-01 | Phase 4 | Complete |
+| FOLD-02 | Phase 4 | Complete |
+| BULK-01 | Phase 4 | Complete |
+| BULK-02 | Phase 4 | Complete |
+| BULK-03 | Phase 4 | Complete |
+| BULK-04 | Phase 4 | Complete |
+| BULK-05 | Phase 4 | Complete |
+
+**Coverage:**
+- v1 requirements: 42 total
+- Mapped to phases: 42
+- Unmapped: 0
+
+---
+*Requirements defined: 2026-04-02*
+*Last updated: 2026-04-02 after roadmap creation — all 42 v1 requirements mapped*