Refresh MCP runtimes across thread startup#35204
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## Why MCP configuration can change while a thread is still starting, before it appears in the thread manager's loaded-thread list. In that window, invalidation could miss the new thread and leave it with a stale MCP runtime. ## What changed - Centralize MCP runtime invalidation in `ThreadManager` so it refreshes loaded threads and marks in-progress thread startups for refresh after publication. - Use the centralized invalidation path for account and plugin changes. - Invalidate MCP runtimes after successful server and plugin OAuth logins. ## Testing - Add a regression test that pauses thread startup, invalidates MCP runtimes, and verifies that the newly published thread refreshes its MCP projection. GitOrigin-RevId: 8944f5a21816a1405e038a0d4c08b66362ea9368
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Refresh MCP runtimes across thread startup
Why
MCP configuration can change while a thread is still starting, before it appears in the thread manager's loaded-thread list. In that window, invalidation could miss the new thread and leave it with a stale MCP runtime.
What changed
ThreadManagerso it refreshes loaded threads and marks in-progress thread startups for refresh after publication.Testing