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/DATABASE.md

@@ -619,7 +619,7 @@ Server mode's accounts ([SERVER-MODE.md](SERVER-MODE.md), `server/lib/auth.js`).
 
 | Table | Columns |
 | --- | --- |
-| `users` | `id`, `username` (unique, case-insensitive), `role` (`admin`\|`analyst`\|`member`), `password_hash` (`scrypt$<salt>$<hash>`), `disabled`, `created_at` |
+| `users` | `id`, `username` (unique, case-insensitive), `role` (`admin`\|`analyst`\|`developer` — `member` before, migrated on start), `password_hash` (`scrypt$<salt>$<hash>`), `disabled`, `created_at` |
 | `auth_sessions` | `token_hash` (SHA-256 of the cookie token, PK), `user_id` → `users.id` (cascade), `created_at`, `expires_at` (30 days) |
 | `account_pins` | `user_id` → `users.id` (cascade), `tool` (`claude`\|`codex`), `account` (a pool account's name), `pinned_at`; PK (`user_id`, `tool`) — an admin's pin of a user to one pool account (`server/lib/account-pins.js`) |