Add Settlement Summary Report with net settlement calculation (BlazorServer only)

[Copilot]

Implements a settlement summary report showing per-merchant settlement outcomes with gross value, fees, and net settlement amounts. The report supports filtering by date range, merchant, and settlement status (pending, settled, failed).

All implementation is contained within the BlazorServer project - no changes to BusinessLogic project.

Data Model

• SettlementSummaryModel in BlazorServer/Models/Models.cs with settlement period, merchant info, gross/net values, fees, and status
• Net settlement calculated as gross - fees per acceptance criteria

BlazorServer Implementation

• GetSettlementSummaryQuery in BlazorServer/Requests/Requests.cs with optional filters for merchant and status
• Handler in BlazorServer/Services/TestMediatorService.cs generates mock data for testing
• Self-contained implementation following BlazorServer-only report pattern

UI (SettlementSummary.razor)

• Filter panel: date range, merchant dropdown, status dropdown
• KPI cards: merchant count, gross value, fees, net settlement
• Data grid with color-coded status badges (green/yellow/red)
• Standard loading/error/empty states

Implementation follows existing BlazorServer report patterns and does not depend on BusinessLogic project.

// Net settlement calculation in TestMediatorService handler
var grossValue = (decimal)(random.NextDouble() * 100000 + 10000);
var totalFees = Math.Round(grossValue * DefaultFeePercentage, 2);
var netAmount = Math.Round(grossValue - totalFees, 2);

Original prompt

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This section details on the original issue you should resolve

<issue_title>Settlement Summary Report</issue_title>
<issue_description>Description: Provide a summary of settlement outcomes per merchant.
Business Value: Supports finance operations and merchant payout visibility.

Data Requirements

• Settlement period
• Merchant
• Gross transaction value
• Total fees
• Net settlement amount
• Settlement status (pending, settled, failed)

Acceptance Criteria

• Net settlement = gross – fees.
• Settlement status reflects settlement engine state accurately.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Settlement Summary Report #560

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[StuartFerguson]

@copilot can you do all the changes in the blazor server app and nothing in the business logic project

[Copilot]

@copilot can you do all the changes in the blazor server app and nothing in the business logic project

Done! All Settlement Summary changes are now in the BlazorServer project only. I've removed the changes from BusinessLogic, BusinessLogic.Tests, and Testing projects, and added the handler to TestMediatorService.

Changes in commit 34fa458:

• ❌ Removed: EstateManagementUI.BusinessLogic/Models/SettlementSummaryModel.cs
• ❌ Removed: Handler from EstateManagementUI.BusinessLogic/RequestHandlers/ReportingRequestHandler.cs
• ❌ Removed: Query from EstateManagementUI.BusinessLogic/Requests/Queries.cs
• ❌ Removed: Test data from EstateManagementUI.BusinessLogic.Tests/MediatorTests.cs and EstateManagementUI.Testing/TestData.cs
• ✅ Kept: All BlazorServer files (Models, Requests, UI page)
• ✅ Added: Handler in EstateManagementUI.BlazorServer/Services/TestMediatorService.cs

The implementation is now entirely self-contained within the BlazorServer project.