The gateway is a deployment (castle-gateway) — its lifecycle is the same
convergence as everything else, so the bespoke start/stop/reload verbs
(which still routed through the retired enable/disable path) are gone.
- CLI: `castle gateway` is now inspection only — bare or `status` shows
the route table. Start/stop/reload it via `castle apply` (render routes
+ reload) or `castle restart castle-gateway`. Deletes the last users of
`_service_enable`/`_service_disable`, so those are removed too.
- API: retire `POST /gateway/reload` (making routes live is `POST /apply`);
`PUT /gateway/config` message + docstring now say apply, not deploy.
- UI: GatewayPanel's "Reload" button → "Apply" (useApply); drop the
useGatewayReload hook; GatewaySettings points at `castle apply`.
- docs: `castle gateway reload|status` → `castle gateway` (status lens).
core 129 / cli 31 / api 59 pass; dashboard builds clean; live `castle
gateway` shows routes with no start/stop/reload; /gateway/reload removed
from the API.
Update the README, AGENTS.md, install.sh, and docs/ for the converge
model: one `castle apply [name] [--plan]` replaces `deploy && start` and
the per-kind enable/disable/install/start/stop verbs. CLI references now
list apply + restart (the imperative bounce) + logs; recipes use
`castle apply`; "turn it off" is documented as `enabled: false` + apply.
install.sh's next-steps collapse to a single `castle apply`.
Verified: no retired-verb command instructions remain in any markdown;
install.sh syntax OK; live `castle apply --plan` reports converged;
doctor all-green; core 129 / cli 31 / api 59 pass.
