[StuartFerguson]

Closes #845

Adds automated coverage for the Central Logging API and forwarder:

• API/database integration tests cover ingestion validation and duplicates, upload parsing and partial batch failures, search filters and limits, authorization, readiness, and the static UI.
• Forwarder tests cover complete and malformed lines, incomplete tails, retries, checkpoint recovery, renames, and truncation.
• The SQL Server integration fixture starts a disposable SQL Server with Testcontainers, while allowing an existing test database through CENTRAL_LOGGING_TEST_CONNECTION.
• Adds the tests to CentralLogging.sln and updates the pull request workflow to restore, build, and test the full solution on .NET 10.

Verification: Release solution build succeeded; all 23 tests passed.

[chatgpt-codex-connector]

Codex Review Summary: ✅ Completed

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-11-09T18:41:37.525151Z	0097847	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 0097847bd6

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 419 complexity · 0 duplication

Metric	Results
Complexity	419
Duplication	0

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