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Exit server when owner process dies (harness-agnostic cleanup)

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start-server.sh passes $PPID as BRAINSTORM_OWNER_PID to the server.
The server checks every 60s if the owner process is still alive
(kill -0). If it's gone, the server shuts down immediately —
deletes .server-info, writes .server-stopped, exits cleanly.
Works across all harnesses (CC, Codex, Gemini CLI) since it
tracks the shell process that launched the script, which dies
when the harness dies.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Jesse Vincent
2026-03-11 18:39:04 -07:00
parent 263e3268f4
commit ec99b7c4a4
2 changed files with 27 additions and 18 deletions
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4
skills/brainstorming/scripts/start-server.sh
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@@ -91,13 +91,13 @@ cd "$SCRIPT_DIR"
# Foreground mode for environments that reap detached/background processes.
if [[ "$FOREGROUND" == "true" ]]; then
echo "$$" > "$PID_FILE"
env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" node server.js
env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$PPID" node server.js
exit $?
fi
# Start server, capturing output to log file
# Use nohup to survive shell exit; disown to remove from job table
nohup env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" node server.js > "$LOG_FILE" 2>&1 &
nohup env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$PPID" node server.js > "$LOG_FILE" 2>&1 &
SERVER_PID=$!
disown "$SERVER_PID" 2>/dev/null
echo "$SERVER_PID" > "$PID_FILE"