Harden transaction request deserialization by removing unsafe TypeNameHandling

[Copilot]

• Review the failing CI workflow and isolate the broken unit test
• Inspect the handler and existing test coverage for unsupported transaction payloads
• Update the unsupported-payload handler test to assert the bad-request result safely across environments
• Run the relevant TransactionProcessor.Tests coverage after the change
• Run validation checks on the final change

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 20 complexity · 0 duplication

Metric	Results
Complexity	20
Duplication	0

View in Codacy

_{TIP This summary will be updated as you push new changes. Give us feedback}

[StuartFerguson]

@copilot code looks fine but can you address the codacy issues please

[Copilot]

@copilot code looks fine but can you address the codacy issues please

Addressed the Codacy follow-ups in 5bde6c9. I tightened the transaction request deserialization helper to use explicit safe Newtonsoft settings and improved the failure path/messages, then re-ran the focused handler tests and the full TransactionProcessor.Tests project successfully.

Warning

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

• f.feedz.io
  • Triggering command: /usr/bin/dotnet dotnet test /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.Tests/TransactionProcessor.Tests.csproj --no-restore -nologo --filter TransactionHandlersTests (dns block)
  • Triggering command: /usr/bin/dotnet dotnet test /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.Tests/TransactionProcessor.Tests.csproj --no-restore -nologo --filter TransactionHandlersTests gsign/gh-gpgsign-linux-x86_64 (dns block)
  • Triggering command: /usr/bin/dotnet dotnet test /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.Tests/TransactionProcessor.Tests.csproj --no-restore -nologo (dns block)

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