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Marc Schier
80db326567
# Description Fix the MCP packet-diagnostics tool contract and the capture failures reported in #4238. - Accept and emit canonical hyphenated capture source and format names while preserving CLR-name and integer compatibility. - Restore typed enum constraints in generated MCP schemas and surface actionable diagnostics errors to MCP clients. - Stop `list_interfaces` from reading `LinkType` on unopened SharpPcap devices. - Close failed SharpPcap handles before retrying NIC opens and report permission failures immediately. - Normalize capture roots, remove duplicated path segments, and use a lazy secure per-user or atomic temporary fallback. - Align MCP/diagnostics documentation and interop-agent guidance. ## Related Issues - Fixes #4238 ## Checklist - [ ] I have signed the [CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf) and read the [CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md) doc. - [x] I have added tests that prove my fix is effective or that my feature works and increased code coverage. - [x] I have added all necessary documentation. - [x] I have verified that my changes do not introduce (new) build or analyzer warnings. - [ ] I ran **all** tests locally using the **UA.slnx** solution against at least .net **framework** and .net **10**, and all passed. - [ ] I fixed **all** failing and flaky tests in the CI pipelines and **all** CodeQL warnings. - [ ] I have addressed **all** PR feedback received. --------- Copilot-Session: 641a4356-aa8d-45e6-9077-eeb50b9b7e0a