fix: address review findings — dynamic version, deduplicate KILL, update README

README.md

@@ -2307,8 +2307,8 @@ IRC_LISTEN_ADDR=
 | Connection | `NICK`, `USER`, `PASS`, `QUIT`, `PING`/`PONG`, `CAP` |
 | Channels   | `JOIN`, `PART`, `MODE`, `TOPIC`, `NAMES`, `LIST`, `KICK`, `INVITE` |
 | Messaging  | `PRIVMSG`, `NOTICE`                                  |
-| Info       | `WHO`, `WHOIS`, `LUSERS`, `MOTD`, `AWAY`             |
-| Operator   | `OPER` (requires `NEOIRC_OPER_NAME` and `NEOIRC_OPER_PASSWORD`) |
+| Info       | `WHO`, `WHOIS`, `LUSERS`, `MOTD`, `AWAY`, `USERHOST`, `VERSION`, `ADMIN`, `INFO`, `TIME` |
+| Operator   | `OPER`, `KILL`, `WALLOPS` (requires `NEOIRC_OPER_NAME` and `NEOIRC_OPER_PASSWORD`) |
 
 ### Protocol Details
 
@@ -2820,6 +2820,10 @@ guess is borne by the server (bcrypt), not the client.
   login from additional devices via `POST /api/v1/login`
 - [x] **Cookie-based auth** — HttpOnly cookies replace Bearer tokens for
   all API authentication
+- [x] **Tier 3 utility commands** — USERHOST (302), VERSION (351), ADMIN
+  (256–259), INFO (371/374), TIME (391), KILL (oper-only forced
+  disconnect), WALLOPS (oper-only broadcast to +w users)
+- [x] **User mode +w** — wallops usermode via `MODE nick +w/-w`
 
 ### Future (1.0+)