Add File Processing upload page with required profile/file validation

[Copilot]

This PR adds the File Processing upload screen under /file-processing/upload and enforces the required input flow: select a file profile and select a CSV file before submission.

• New File Processing upload page

  • Added Components/Pages/FileProcessing/Upload.razor
  • Introduced UI for:
    • file profile selection (InputSelect)
    • CSV file selection (InputFile, .csv accept filter)
  • Added standard page actions (Upload / Cancel) and navigation back to /file-processing

• Validation behavior

  • Added form model validation for required profile selection ([Required])
  • Added submit-time validation for required file selection
  • Displays inline validation messages for missing profile and missing file

• Page-level test coverage

  • Added FileProcessingUploadPageTests.cs with coverage for:
    • rendering required controls
    • submission with missing profile + file
    • submission with profile selected but file missing

<EditForm EditContext="@editContext" OnSubmit="@HandleSubmit">
    <DataAnnotationsValidator />
    <InputSelect @bind-Value="model.FileProfile" class="input w-full" name="FileProfile">
        <option value="">Select a file profile...</option>
        @foreach (var fileProfile in fileProfiles)
        {
            <option value="@fileProfile">@fileProfile</option>
        }
    </InputSelect>

    <InputFile OnChange="@HandleFileSelected" accept=".csv" class="input w-full" />
    <ValidationMessage For="@(() => model.FileProfile)" />
</EditForm>

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=4248 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.yBbmMW --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,11142278794958536398,17079323376769413295,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,2754949299023374613,11921179128440717630,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --disable-gpu --no-sandbox --screenshot=/tmp/file-upload-preview.png --window-size=1280,900 file:///tmp/file-upload-preview.html (dns block)
• clients2.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=4248 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.yBbmMW --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,11142278794958536398,17079323376769413295,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,2754949299023374613,11921179128440717630,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --disable-gpu --no-sandbox --screenshot=/tmp/file-upload-preview.png --window-size=1280,900 file:///tmp/file-upload-preview.html (dns block)
• f.feedz.io
  • Triggering command: /usr/bin/dotnet dotnet test EstateManagementUI.BlazorServer.Tests/EstateManagementUI.BlazorServer.Tests.csproj --no-logo (dns block)
  • Triggering command: /usr/bin/dotnet dotnet test EstateManagementUI.BlazorServer.Tests/EstateManagementUI.BlazorServer.Tests.csproj --filter FullyQualifiedName~FileProcessing --no-logo (dns block)
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.25.1/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp /opt/hostedtoolcache/CodeQL/2.25.1/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp (dns block)
• redirector.gvt1.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=4248 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.yBbmMW --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,11142278794958536398,17079323376769413295,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,2754949299023374613,11921179128440717630,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --disable-gpu --no-sandbox --screenshot=/tmp/file-upload-preview.png --window-size=1280,900 file:///tmp/file-upload-preview.html (dns block)
• www.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=4248 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.yBbmMW --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,11142278794958536398,17079323376769413295,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,2754949299023374613,11921179128440717630,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --disable-gpu --no-sandbox --screenshot=/tmp/file-upload-preview.png --window-size=1280,900 file:///tmp/file-upload-preview.html (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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