No dedicated test fixture simulates a mid-session server crash/disconnect

Which client?

All / shared core

The problem

core/mcp/inspectorClient.ts has substantial crash-reconciliation logic (roughly lines 1207-1260 and 1965-2160) for handling a server process dying or disconnecting mid-session, but there's no dedicated test fixture/mock server that deliberately crashes at a chosen point in a session. Coverage of this logic currently relies on incidental paths rather than a targeted simulation, so a regression here could slip through.

Solution you have in mind (optional)

Add a test-servers fixture (or a mode flag on an existing one) that can be told to crash/hang at a specific point in a session, and add core tests that drive the client through the reconciliation paths using it.

Alternatives or workarounds you have tried

No response

Already built it locally?

No response

Before you submit

• I searched existing issues and this is not a duplicate.
• This is a request for the Inspector itself, not for the MCP specification or an SDK.

Start with the crash-reconciliation logic in core/mcp/inspectorClient.ts, especially the areas around lines 1207-1260 and 1965-2160, then inspect the existing test-servers fixtures. Add a fixture or mode that crashes or hangs at a chosen session point, and add core tests that exercise those reconciliation paths and pass reliably.