Under the hood
Useful1 Signal1
MCP connection and tool caches were merged into one lazily created object.
What's wrong with this entry?
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What
The separate module-level maps for MCP connections, tool, resource and command lists, in-flight reauth and live clients are now fields on a single object created on first use and registered with the global cache registry. Connection reuse and live-client bookkeeping read through it.
Evidence
liveClients = new Set();
Strings lifted out of the shipped bundle, so the claim above can be checked against them.