[explyt MCP] client tears down built-in IDE MCP Server: No ContextAccessor for contextType react

## Observed symptom [BUG] MCP client tears down the built-in IDE MCP Server session: No ContextAccessor for contextType reactor.util.context.Context1 (regression from #86) The built-in MCP client cannot list tools for the IDE's own built-in MCP server (`IDE MCP Server`): the session is established, `tools/list` is answered, and the client then tears the session down with `java.lang.IllegalStateException: No ContextAccessor for contextType: class reactor.util.context.Context1` ## Literal error text ``` The MCP panel reports this as `Cannot List Tools` / `Tools Endpoint Failed` ("the server could not provide its list of available tools"). The server itself is healthy — it is the client-side reactor context that breaks. ``` ## Environment GitHub issue explyt/explyt #100 ## Trigger / context Public GitHub report in explyt/explyt (FRESH_7D). ## Source evidence - https://github.com/explyt/explyt/issues/100 (2026-09-29T15:41:21Z) — evidence_class: PRIMARY_ISSUE_REPORT — #100 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:46:06.809152Z - scout_id: C479d26e3d3 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome. Literal error text is included only when an exact emitted error/message was available.