refactor(provider-core): MCP provider sessions live in a McpProviderSessions service (#17446)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
784b5625f9Julius Marminge committed on 10/9/2026, 4:15:22 PM· committed by GitHubparent68ab16f
48 files changedLine totals unavailable