The gateway.reload documentation advertised four settings the shipped
build rejects. gateway.reload is a strictObject accepting only `mode`,
and `mode` is a union of "off" | "hybrid", so a config written from the
docs fails validation and the gateway fails closed on the unknown keys.
Retired but still documented:
- `debounceMs` and `deferralTimeoutMs` (RETIRED_TUNING_PATHS; stripped by
`openclaw doctor --fix` via stripRetiredTuningKnobs)
- `mode: "restart"` and `mode: "hot"` (mapped to "hybrid" by
`openclaw doctor --fix`)
Correct all four docs pages that still describe them, and say what
replaced them: debounce and active-work deferral now run behind built-in
defaults rather than config keys.
Refs #116973
9878bfc8e5
