Add cbm_proc_opts_t.cancel_requested so cbm_mcp_server_free() stops supervised auto-index work before joining. POSIX supervision kills the worker process group; Windows assigns the suspended worker to a kill-on-close Job and falls back to direct process termination when Job assignment is unavailable.
Short-circuit index_run_supervised() crash recovery after intentional cancellation, remove cancellation logs, and expose cbm_mcp_server_join_autoindex() for callers that explicitly need completion instead of shutdown.
scripts/smoke-test.sh now checks the six-tool streamlined surface separately from the _hidden_tools reveal. Validation: 18/18 subprocess ASan/UBSan tests passed, the supervised auto_watch MCP regression passed, source-safety passed, and the full isolated smoke suite ended with smoke-test: ALL PASSED including clean shutdown and no-orphan gates.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
Andrew Hundt
02c2efa68a