docs: OpenAPI and API.md cover every route; drop removed endpoints; guard config writes

- openapi-extra/run.js describes tmux pane runs only: the removed
  POST /api/run/{id}/message and stream-json run_stream/run_input_ack are gone.
- 108 operations added to OpenAPI (lanes, run, settings, reports, cc-config,
  pets, ai-proxies, tool-profiles, ai-tools, snapshots, locks, ...);
  openapi.yaml regenerated.
- docs/API.md: 74 routes added, 4 endpoints that no longer exist removed.
- Role is `developer`, not `member` (CLI.md, DATABASE.md, OVERVIEW.md);
  `agenthub update` -> `update-check`; help lists `server install-system|tools`
  and `users provision`; ARCHITECTURE.md's stale paths and names fixed.
- cc-config/codex-config writes carry sameOriginGuard (an MCP server or plugin
  is code Claude runs later), with a test; `command -v` takes its name as $1.

docs/OVERVIEW.md

@@ -107,7 +107,7 @@ Internal build — all rights reserved.
   Prometheus rules + Grafana boards for `/api/metrics`
   (`docker-compose.monitoring.yml`, [docs/MONITORING.md](MONITORING.md)).
 - **Server mode for a shared dashboard** (`agenthub server setup`): a login on
-  every page and API call, with admin / member / analyst roles. It is off by
+  every page and API call, with admin / developer / analyst roles. It is off by
   default, and a local install does not change. It is login only, without
   per-user isolation yet ([docs/SERVER-MODE.md](SERVER-MODE.md)).