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docs/product-plan-v2-CHANGELOG.md

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+# Product Plan v2 - Change Log
+
+## [v2.1] - 2026-02-01
+
+### New Features
+
+#### Epic 7: Dashboard Enhancement
+- Added **US-7.1**: Data quality metrics panel showing annotation completeness rate
+- Added **US-7.2**: Active model status panel with mAP/precision/recall metrics
+- Added **US-7.3**: Recent activity feed showing last 10 system activities
+- Added **US-7.4**: Meaningful stats cards (Total/Complete/Incomplete/Pending)
+
+#### Annotation Completeness Definition
+- Defined "annotation complete" criteria:
+  - Must have `invoice_number` OR `ocr_number` (identifier)
+  - Must have `bankgiro` OR `plusgiro` (payment account)
+
+### New API Endpoints
+- Added `GET /api/v1/admin/dashboard/stats` - Dashboard statistics with completeness calculation
+- Added `GET /api/v1/admin/dashboard/active-model` - Active model info with running training status
+- Added `GET /api/v1/admin/dashboard/activity` - Recent activity feed aggregated from multiple sources
+
+### New UI Components
+- Added **5.0 Dashboard Overview** wireframe with:
+  - Stats cards row (Total/Complete/Incomplete/Pending)
+  - Data Quality panel with percentage ring
+  - Active Model panel with metrics display
+  - Recent Activity list with icons and relative timestamps
+  - System Status bar
+
+---
+
+## [v2.0] - 2024-01-15
+- Initial version with Epic 1-6
+- Batch upload, document management, annotation workflow, training management