[S3-2] Shared component bUnit tests — Pagination, FilterPanel, SearchInput + 5 more

[mpaulosky]

Summary

Write bUnit tests for 8 shared Razor components that have no test coverage.

Components to test

• Pagination.razor — page navigation, boundary conditions
• FilterPanel.razor — filter selection, clear state
• SearchInput.razor — input binding, debounce behaviour
• StatusBadge.razor — renders correct CSS class per status
• CategoryBadge.razor — renders correct CSS class per category
• SignalRConnection.razor — connection state rendering
• ToastContainer.razor — adds/removes toasts
• DeleteConfirmationModal.razor — confirm/cancel callbacks

Sprint 3 — Shared Components
Part of milestone: Code Coverage Improvement

[github-actions]

📋 Assigned to Legolas (Frontend Dev)

Issue: #205 — [S3-2] Shared component bUnit tests — Pagination, FilterPanel, SearchInput + 5 more

Legolas will pick this up in the next Copilot session.

For Copilot coding agent: If enabled, this issue will be worked automatically.
Otherwise, start a Copilot session and say:
Legolas, work on issue #205