{"repo":"NousResearch/hermes-agent","public_id":"108084","display_label":"Windows MCP stdio process tree cleanup","summary":"These items address a Windows-specific issue where MCP stdio child processes and their descendants (e.g., cmd.exe/npx chains) are not fully terminated on disconnect or reconnect, because the POSIX-style process group reaper does not reach them. Proposed approaches involve Job Objects and explicit tree reaping.","subsystem":"mcp","counts":{"members":3,"open_issues":1,"open_issues_distinct":1,"open_prs":0,"closed_issues":0,"merged_prs":1,"attempt_prs":1},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":123003,"merged_at":"2026-09-27T00:58:17+00:00"},"resolution":{"state":"unresolved","by":null},"freshness":{"state":"verified","last_verified_at":"2026-09-27T00:58:17+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.6666666666666666},"fix_edges":[{"issue_number":61059,"pr_number":123003,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-27T00:58:17+00:00"},{"issue_number":108084,"pr_number":123003,"tier":"verified","basis":"superseded_ref","confidence":0.9,"recoverable_from_timeline":false,"pr_merged_at":"2026-09-27T00:58:17+00:00"}],"members":[{"kind":"issue","number":108084,"title":"Windows: MCP reconnect leaks stdio grandchildren — POSIX killpg reaper can't reach the cmd.exe/npx chain","url":null,"state":"open"},{"kind":"pr","number":108093,"title":"fix(tools): reap Windows MCP stdio process trees","url":null,"state":"closed","close_reason":{"refs":[{"kind":"commit","value":"0cd93f0268","number":0},{"kind":"pr","value":"#108084","number":108084},{"kind":"pr","value":"#131331","number":131331},{"kind":"pr","value":"#123003","number":123003}],"category":"superseded_by_pr","implication":"superseded"},"merged":false},{"kind":"pr","number":123003,"title":"fix(mcp): kill Windows stdio MCP orphan trees (Job Object + tree reaping)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["hermes_cli/process_identity.py","tests/tools/test_mcp_windows_orphan_fix.py","tools/mcp_tool_lifecycle.py","tools/mcp_tool_transport.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}