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## Why Executor-owned MCP configuration can include required servers that are unavailable. Guardian review sessions should not attempt to discover those servers or let them block an approval review. ## What changed - Skip projecting MCP servers from selected executors when the session source is a Guardian reviewer. - Preserve executor MCP discovery for regular thread sessions. ## Testing Added an app-server integration test that configures an unreachable required executor MCP server and verifies that Guardian can still review an escalated command and return its decision. GitOrigin-RevId: 5b712a3ee04e6896d5ca0cff39a32dd8e0fe0132