npx claudepluginhub os-tack/fcp --plugin fcpDefined in hooks/hooks.json
{
"SessionStart": [
{
"once": true,
"hooks": [
{
"type": "command",
"command": "bash ${CLAUDE_PLUGIN_ROOT}/scripts/preflight.sh",
"timeout": 5
}
],
"matcher": "startup|resume"
}
]
}"On SessionStart, asynchronously runs Python script ./scripts/main.py hooks via uv in plugin root directory, setting PLUGIN_NAME=naming env var (300s timeout)."