fix: extract repeated IRC command string literals to constants (goconst)

Add comprehensive IRC numeric reply support:

Connection registration (001-005):
- 002 RPL_YOURHOST, 003 RPL_CREATED, 004 RPL_MYINFO, 005 RPL_ISUPPORT
- All sent automatically during session creation after RPL_WELCOME

Server statistics (251-255):
- RPL_LUSERCLIENT, RPL_LUSEROP, RPL_LUSERCHANNELS, RPL_LUSERME
- Sent during connection registration and via LUSERS command

Channel operations:
- MODE command: query channel modes (324 RPL_CHANNELMODEIS, 329 RPL_CREATIONTIME)
- MODE command: query user modes (221 RPL_UMODEIS)
- NAMES command: query channel member list (353/366)
- LIST command: list all channels (322 RPL_LIST, 323 end of list)

User queries:
- WHOIS command: 311/312/318/319 numerics
- WHO command: 352 RPL_WHOREPLY, 315 RPL_ENDOFWHO

Database additions:
- GetChannelCount, ListAllChannelsWithCounts
- GetChannelCreatedAt, GetSessionCreatedAt

Also adds StartTime to Globals for RPL_CREATED and updates README
with comprehensive documentation of all new commands and numerics.

closes #52

README.md

@@ -764,21 +764,98 @@ not pollute the message queue.
 
 **IRC reference:** RFC 1459 §4.6.2, §4.6.3
 
-#### MODE — Set/Query Modes (Planned)
+#### MODE — Query Modes
 
-Set channel or user modes.
+Query channel or user modes. Returns the current mode string and, for
+channels, the creation timestamp.
 
 **C2S:**
 ```json
-{"command": "MODE", "to": "#general", "params": ["+m"]}
+{"command": "MODE", "to": "#general"}
-{"command": "MODE", "to": "#general", "params": ["+o", "alice"]}
+{"command": "MODE", "to": "alice"}
 ```
 
-**Status:** Not yet implemented. See [Channel Modes](#channel-modes) for the
+**S2C (via message queue):**
-planned mode set.
+
+For channels, the server sends RPL_CHANNELMODEIS (324) and
+RPL_CREATIONTIME (329):
+```json
+{"command": "324", "to": "alice", "params": ["#general", "+n"]}
+{"command": "329", "to": "alice", "params": ["#general", "1709251200"]}
+```
+
+For users, the server sends RPL_UMODEIS (221):
+```json
+{"command": "221", "to": "alice", "body": ["+"]}
+```
+
+**Note:** Mode changes (setting/unsetting modes) are not yet implemented.
+Currently only query is supported.
 
 **IRC reference:** RFC 1459 §4.2.3
 
+#### NAMES — Channel Member List
+
+Request the member list for a channel. Returns RPL_NAMREPLY (353) and
+RPL_ENDOFNAMES (366).
+
+**C2S:**
+```json
+{"command": "NAMES", "to": "#general"}
+```
+
+**IRC reference:** RFC 1459 §4.2.5
+
+#### LIST — List Channels
+
+Request a list of all channels with member counts. Returns RPL_LIST (322)
+for each channel followed by RPL_LISTEND (323).
+
+**C2S:**
+```json
+{"command": "LIST"}
+```
+
+**IRC reference:** RFC 1459 §4.2.6
+
+#### WHOIS — User Information
+
+Query information about a user. Returns RPL_WHOISUSER (311),
+RPL_WHOISSERVER (312), RPL_WHOISCHANNELS (319), and RPL_ENDOFWHOIS (318).
+
+**C2S:**
+```json
+{"command": "WHOIS", "to": "alice"}
+```
+
+**IRC reference:** RFC 1459 §4.5.2
+
+#### WHO — Channel User List
+
+Query users in a channel. Returns RPL_WHOREPLY (352) for each user followed
+by RPL_ENDOFWHO (315).
+
+**C2S:**
+```json
+{"command": "WHO", "to": "#general"}
+```
+
+**IRC reference:** RFC 1459 §4.5.1
+
+#### LUSERS — Server Statistics
+
+Request server user/channel statistics. Returns RPL_LUSERCLIENT (251),
+RPL_LUSEROP (252), RPL_LUSERCHANNELS (254), and RPL_LUSERME (255).
+
+**C2S:**
+```json
+{"command": "LUSERS"}
+```
+
+LUSERS replies are also sent automatically during connection registration.
+
+**IRC reference:** RFC 1459 §4.3.2
+
 #### KICK — Kick User (Planned)
 
 Remove a user from a channel.
@@ -828,12 +905,27 @@ the server to the client (never C2S) and use 3-digit string codes in the
 | Code | Name                 | When Sent | Example |
 |------|----------------------|-----------|---------|
 | `001` | RPL_WELCOME         | After session creation | `{"command":"001","to":"alice","body":["Welcome to the network, alice"]}` |
-| `002` | RPL_YOURHOST        | After session creation | `{"command":"002","to":"alice","body":["Your host is neoirc-server, running version 0.1"]}` |
+| `002` | RPL_YOURHOST        | After session creation | `{"command":"002","to":"alice","body":["Your host is neoirc, running version 0.1"]}` |
 | `003` | RPL_CREATED         | After session creation | `{"command":"003","to":"alice","body":["This server was created 2026-02-10"]}` |
-| `004` | RPL_MYINFO          | After session creation | `{"command":"004","to":"alice","params":["neoirc-server","0.1","","imnst"]}` |
+| `004` | RPL_MYINFO          | After session creation | `{"command":"004","to":"alice","params":["neoirc","0.1","","imnst"]}` |
+| `005` | RPL_ISUPPORT        | After session creation | `{"command":"005","to":"alice","params":["CHANTYPES=#","NICKLEN=32","NETWORK=neoirc"],"body":["are supported by this server"]}` |
+| `221` | RPL_UMODEIS         | In response to user MODE query | `{"command":"221","to":"alice","body":["+"]}` |
+| `251` | RPL_LUSERCLIENT     | On connect or LUSERS command | `{"command":"251","to":"alice","body":["There are 5 users and 0 invisible on 1 servers"]}` |
+| `252` | RPL_LUSEROP         | On connect or LUSERS command | `{"command":"252","to":"alice","params":["0"],"body":["operator(s) online"]}` |
+| `254` | RPL_LUSERCHANNELS   | On connect or LUSERS command | `{"command":"254","to":"alice","params":["3"],"body":["channels formed"]}` |
+| `255` | RPL_LUSERME         | On connect or LUSERS command | `{"command":"255","to":"alice","body":["I have 5 clients and 1 servers"]}` |
+| `311` | RPL_WHOISUSER       | In response to WHOIS | `{"command":"311","to":"alice","params":["bob","bob","neoirc","*"],"body":["bob"]}` |
+| `312` | RPL_WHOISSERVER     | In response to WHOIS | `{"command":"312","to":"alice","params":["bob","neoirc"],"body":["neoirc server"]}` |
+| `315` | RPL_ENDOFWHO        | End of WHO response | `{"command":"315","to":"alice","params":["#general"],"body":["End of /WHO list"]}` |
+| `318` | RPL_ENDOFWHOIS      | End of WHOIS response | `{"command":"318","to":"alice","params":["bob"],"body":["End of /WHOIS list"]}` |
+| `319` | RPL_WHOISCHANNELS   | In response to WHOIS | `{"command":"319","to":"alice","params":["bob"],"body":["#general #dev"]}` |
 | `322` | RPL_LIST            | In response to LIST | `{"command":"322","to":"alice","params":["#general","5"],"body":["General discussion"]}` |
 | `323` | RPL_LISTEND         | End of LIST response | `{"command":"323","to":"alice","body":["End of /LIST"]}` |
+| `324` | RPL_CHANNELMODEIS   | In response to channel MODE query | `{"command":"324","to":"alice","params":["#general","+n"]}` |
+| `329` | RPL_CREATIONTIME    | After channel MODE query | `{"command":"329","to":"alice","params":["#general","1709251200"]}` |
+| `331` | RPL_NOTOPIC         | Channel has no topic (on JOIN) | `{"command":"331","to":"alice","params":["#general"],"body":["No topic is set"]}` |
 | `332` | RPL_TOPIC           | On JOIN or TOPIC query | `{"command":"332","to":"alice","params":["#general"],"body":["Welcome!"]}` |
+| `352` | RPL_WHOREPLY        | In response to WHO | `{"command":"352","to":"alice","params":["#general","bob","neoirc","neoirc","bob","H"],"body":["0 bob"]}` |
 | `353` | RPL_NAMREPLY        | On JOIN or NAMES query | `{"command":"353","to":"alice","params":["=","#general"],"body":["@op1 alice bob +voiced1"]}` |
 | `366` | RPL_ENDOFNAMES      | End of NAMES response | `{"command":"366","to":"alice","params":["#general"],"body":["End of /NAMES list"]}` |
 | `372` | RPL_MOTD            | MOTD line | `{"command":"372","to":"alice","body":["Welcome to the server"]}` |
@@ -841,14 +933,18 @@ the server to the client (never C2S) and use 3-digit string codes in the
 | `376` | RPL_ENDOFMOTD       | End of MOTD | `{"command":"376","to":"alice","body":["End of /MOTD command"]}` |
 | `401` | ERR_NOSUCHNICK      | DM to nonexistent nick | `{"command":"401","to":"alice","params":["bob"],"body":["No such nick/channel"]}` |
 | `403` | ERR_NOSUCHCHANNEL   | Action on nonexistent channel | `{"command":"403","to":"alice","params":["#nope"],"body":["No such channel"]}` |
+| `421` | ERR_UNKNOWNCOMMAND  | Unrecognized command | `{"command":"421","to":"alice","params":["FOO"],"body":["Unknown command"]}` |
+| `432` | ERR_ERRONEUSNICKNAME | Invalid nick format | `{"command":"432","to":"alice","params":["bad nick!"],"body":["Erroneous nickname"]}` |
 | `433` | ERR_NICKNAMEINUSE   | NICK to taken nick | `{"command":"433","to":"*","params":["alice"],"body":["Nickname is already in use"]}` |
 | `442` | ERR_NOTONCHANNEL    | Action on unjoined channel | `{"command":"442","to":"alice","params":["#general"],"body":["You're not on that channel"]}` |
+| `461` | ERR_NEEDMOREPARAMS  | Missing required fields | `{"command":"461","to":"alice","params":["JOIN"],"body":["Not enough parameters"]}` |
 | `482` | ERR_CHANOPRIVSNEEDED | Non-op tries op action | `{"command":"482","to":"alice","params":["#general"],"body":["You're not channel operator"]}` |
 
-**Note:** Numeric replies are planned for full implementation. The current MVP
+**Note:** Numeric replies are now implemented. All IRC command responses
-returns standard HTTP error responses (4xx/5xx with JSON error bodies) instead
+(success and error) are delivered as numeric replies through the message queue.
-of numeric replies for error conditions. Numeric replies in the message queue
+HTTP error codes are reserved for transport-level issues (auth failures,
-will be added post-MVP.
+malformed requests, server errors). The `params` field in the message envelope
+carries IRC-style parameters (e.g., channel name, target nick).
 
 ### Channel Modes
 
@@ -1054,27 +1150,78 @@ reference with all required and optional fields.
 
 | Command   | Required Fields     | Optional      | Response Status |
 |-----------|---------------------|---------------|-----------------|
-| `PRIVMSG` | `to`, `body`        | `meta`        | 201 Created     |
+| `PRIVMSG` | `to`, `body`        | `meta`        | 200 OK          |
-| `NOTICE`  | `to`, `body`        | `meta`        | 201 Created     |
+| `NOTICE`  | `to`, `body`        | `meta`        | 200 OK          |
 | `JOIN`    | `to`                |               | 200 OK          |
 | `PART`    | `to`                | `body`        | 200 OK          |
 | `NICK`    | `body`              |               | 200 OK          |
 | `TOPIC`   | `to`, `body`        |               | 200 OK          |
+| `MODE`    | `to`                |               | 200 OK          |
+| `NAMES`   | `to`                |               | 200 OK          |
+| `LIST`    |                     |               | 200 OK          |
+| `WHOIS`   | `to` or `body`      |               | 200 OK          |
+| `WHO`     | `to`                |               | 200 OK          |
+| `LUSERS`  |                     |               | 200 OK          |
 | `QUIT`    |                     | `body`        | 200 OK          |
 | `PING`    |                     |               | 200 OK          |
 
-**Errors (all commands):**
+All IRC commands return HTTP 200 OK. IRC-level success and error responses
+are delivered as **numeric replies** through the message queue (see
+[Numeric Replies](#numeric-replies) below). HTTP error codes (4xx/5xx) are
+reserved for transport-level problems: malformed JSON (400), missing/invalid
+auth tokens (401), and server errors (500).
+
+**HTTP errors (transport-level only):**
 
 | Status | Error | When |
 |--------|-------|------|
-| 400    | `invalid request` | Malformed JSON |
+| 400    | `invalid request` | Malformed JSON or empty command |
-| 400    | `to field required` | Missing `to` for commands that need it |
-| 400    | `body required` | Missing `body` for commands that need it |
-| 400    | `unknown command: X` | Unrecognized command |
 | 401    | `unauthorized` | Missing or invalid auth token |
-| 404    | `channel not found` | Target channel doesn't exist |
+| 500    | `internal error` | Server-side failure |
-| 404    | `user not found` | DM target nick doesn't exist |
+
-| 409    | `nick already in use` | NICK target is taken |
+**IRC numeric error replies (delivered via message queue):**
+
+| Numeric | Name | When |
+|---------|------|------|
+| 401     | ERR_NOSUCHNICK | DM target nick doesn't exist |
+| 403     | ERR_NOSUCHCHANNEL | Target channel doesn't exist or invalid name |
+| 421     | ERR_UNKNOWNCOMMAND | Unrecognized command |
+| 432     | ERR_ERRONEUSNICKNAME | Invalid nickname format |
+| 433     | ERR_NICKNAMEINUSE | NICK target is taken |
+| 442     | ERR_NOTONCHANNEL | Not a member of the target channel |
+| 461     | ERR_NEEDMOREPARAMS | Missing required fields (to, body) |
+
+**IRC numeric success replies (delivered via message queue):**
+
+| Numeric | Name | When |
+|---------|------|------|
+| 001     | RPL_WELCOME | Sent on session creation/login |
+| 002     | RPL_YOURHOST | Sent on session creation/login |
+| 003     | RPL_CREATED | Sent on session creation/login |
+| 004     | RPL_MYINFO | Sent on session creation/login |
+| 005     | RPL_ISUPPORT | Sent on session creation/login |
+| 221     | RPL_UMODEIS | In response to user MODE query |
+| 251     | RPL_LUSERCLIENT | On connect or LUSERS command |
+| 252     | RPL_LUSEROP | On connect or LUSERS command |
+| 254     | RPL_LUSERCHANNELS | On connect or LUSERS command |
+| 255     | RPL_LUSERME | On connect or LUSERS command |
+| 311     | RPL_WHOISUSER | WHOIS user info |
+| 312     | RPL_WHOISSERVER | WHOIS server info |
+| 315     | RPL_ENDOFWHO | End of WHO list |
+| 318     | RPL_ENDOFWHOIS | End of WHOIS list |
+| 319     | RPL_WHOISCHANNELS | WHOIS channels list |
+| 322     | RPL_LIST | Channel in LIST response |
+| 323     | RPL_LISTEND | End of LIST |
+| 324     | RPL_CHANNELMODEIS | Channel mode query response |
+| 329     | RPL_CREATIONTIME | Channel creation timestamp |
+| 331     | RPL_NOTOPIC | Channel has no topic (on JOIN) |
+| 332     | RPL_TOPIC | Channel topic (on JOIN, TOPIC set) |
+| 352     | RPL_WHOREPLY | User in WHO response |
+| 353     | RPL_NAMREPLY | Channel member list (on JOIN, NAMES) |
+| 366     | RPL_ENDOFNAMES | End of NAMES list |
+| 375     | RPL_MOTDSTART | Start of MOTD |
+| 372     | RPL_MOTD | MOTD line |
+| 376     | RPL_ENDOFMOTD | End of MOTD |
 
 ### GET /api/v1/history — Message History
 
@@ -2077,10 +2224,18 @@ GET /api/v1/challenge
 - [ ] **Message rotation** — enforce `MAX_HISTORY` per channel
 - [ ] **Channel modes** — enforce `+i`, `+m`, `+s`, `+t`, `+n`
 - [ ] **User channel modes** — `+o` (operator), `+v` (voice)
-- [ ] **MODE command** — set/query channel and user modes
+- [x] **MODE command** — query channel and user modes (set not yet implemented)
+- [x] **NAMES command** — query channel member list
+- [x] **LIST command** — list all channels with member counts
+- [x] **WHOIS command** — query user information and channel membership
+- [x] **WHO command** — query channel user list
+- [x] **LUSERS command** — query server statistics
+- [x] **Connection registration numerics** — 001-005 sent on session creation
+- [x] **LUSERS numerics** — 251/252/254/255 sent on connect and via /LUSERS
 - [ ] **KICK command** — remove users from channels
-- [ ] **Numeric replies** — send IRC numeric codes via the message queue
+- [x] **Numeric replies** — send IRC numeric codes via the message queue
-  (001 welcome, 353 NAMES, 332 TOPIC, etc.)
+  (001-005 welcome, 251-255 LUSERS, 311-319 WHOIS, 322-329 LIST/MODE,
+  331-332 TOPIC, 352-353 WHO/NAMES, 366, 372-376 MOTD, 401-461 errors)
 - [ ] **Max message size enforcement** — reject oversized messages
 - [ ] **NOTICE command** — distinct from PRIVMSG (no auto-reply flag)
 - [ ] **Multi-client sessions** — add client to existing session
@@ -2100,7 +2255,7 @@ GET /api/v1/challenge
 - [ ] **Push notifications** — optional webhook/push for mobile clients
   when messages arrive during disconnect
 - [ ] **Message search** — full-text search over channel history
-- [ ] **User info command** — WHOIS-equivalent for querying user metadata
+- [x] **User info command** — WHOIS for querying user info and channels
 - [ ] **Connection flood protection** — per-IP connection limits as a
   complement to hashcash
 - [ ] **Invite system** — `INVITE` command for `+i` channels

cmd/neoirc-cli/main.go

@@ -138,16 +138,29 @@ func (a *App) dispatchCommand(cmd, args string) {
 		a.cmdQuery(args)
 	case "/topic":
 		a.cmdTopic(args)
-	case "/names":
-		a.cmdNames()
-	case "/list":
-		a.cmdList()
 	case "/window", "/w":
 		a.cmdWindow(args)
 	case "/quit":
 		a.cmdQuit()
 	case "/help":
 		a.cmdHelp()
+	default:
+		a.dispatchInfoCommand(cmd, args)
+	}
+}
+
+func (a *App) dispatchInfoCommand(cmd, args string) {
+	switch cmd {
+	case "/names":
+		a.cmdNames()
+	case "/list":
+		a.cmdList()
+	case "/motd":
+		a.cmdMotd()
+	case "/who":
+		a.cmdWho(args)
+	case "/whois":
+		a.cmdWhois(args)
 	default:
 		a.ui.AddStatus(
 			"[red]Unknown command: " + cmd,
@@ -510,6 +523,96 @@ func (a *App) cmdList() {
 	a.ui.AddStatus("[cyan]*** End of channel list")
 }
 
+func (a *App) cmdMotd() {
+	a.mu.Lock()
+	connected := a.connected
+	a.mu.Unlock()
+
+	if !connected {
+		a.ui.AddStatus("[red]Not connected")
+
+		return
+	}
+
+	err := a.client.SendMessage(
+		&api.Message{Command: "MOTD"}, //nolint:exhaustruct
+	)
+	if err != nil {
+		a.ui.AddStatus(fmt.Sprintf(
+			"[red]MOTD failed: %v", err,
+		))
+	}
+}
+
+func (a *App) cmdWho(args string) {
+	a.mu.Lock()
+	connected := a.connected
+	target := a.target
+	a.mu.Unlock()
+
+	if !connected {
+		a.ui.AddStatus("[red]Not connected")
+
+		return
+	}
+
+	channel := args
+	if channel == "" {
+		channel = target
+	}
+
+	if channel == "" ||
+		!strings.HasPrefix(channel, "#") {
+		a.ui.AddStatus(
+			"[red]Usage: /who #channel",
+		)
+
+		return
+	}
+
+	err := a.client.SendMessage(
+		&api.Message{ //nolint:exhaustruct
+			Command: "WHO", To: channel,
+		},
+	)
+	if err != nil {
+		a.ui.AddStatus(fmt.Sprintf(
+			"[red]WHO failed: %v", err,
+		))
+	}
+}
+
+func (a *App) cmdWhois(args string) {
+	a.mu.Lock()
+	connected := a.connected
+	a.mu.Unlock()
+
+	if !connected {
+		a.ui.AddStatus("[red]Not connected")
+
+		return
+	}
+
+	if args == "" {
+		a.ui.AddStatus(
+			"[red]Usage: /whois <nick>",
+		)
+
+		return
+	}
+
+	err := a.client.SendMessage(
+		&api.Message{ //nolint:exhaustruct
+			Command: "WHOIS", To: args,
+		},
+	)
+	if err != nil {
+		a.ui.AddStatus(fmt.Sprintf(
+			"[red]WHOIS failed: %v", err,
+		))
+	}
+}
+
 func (a *App) cmdWindow(args string) {
 	if args == "" {
 		a.ui.AddStatus(
@@ -574,6 +677,9 @@ func (a *App) cmdHelp() {
 		"  /topic [text]   — View/set topic",
 		"  /names          — List channel members",
 		"  /list           — List channels",
+		"  /who [#channel] — List users in channel",
+		"  /whois <nick>   — Show user info",
+		"  /motd           — Show message of the day",
 		"  /window <n>     — Switch buffer",
 		"  /quit           — Disconnect and exit",
 		"  /help           — This help",

internal/config/config.go

@@ -13,6 +13,14 @@ import (
 	_ "github.com/joho/godotenv/autoload" // loads .env file
 )
 
+const defaultMOTD = ` _ __   ___  ___  (_)_ __ ___
+| '_ \ / _ \/ _ \ | | '__/ __|
+| | | |  __/ (_) || | | | (__
+|_| |_|\___|\___/ |_|_|  \___|
+
+Welcome to NeoIRC — IRC semantics over HTTP.
+Type /help for available commands.`
+
 // Params defines the dependencies for creating a Config.
 type Params struct {
 	fx.In
@@ -62,7 +70,7 @@ func New(
 	viper.SetDefault("METRICS_PASSWORD", "")
 	viper.SetDefault("MAX_HISTORY", "10000")
 	viper.SetDefault("MAX_MESSAGE_SIZE", "4096")
-	viper.SetDefault("MOTD", "")
+	viper.SetDefault("MOTD", defaultMOTD)
 	viper.SetDefault("SERVER_NAME", "")
 	viper.SetDefault("FEDERATION_KEY", "")
 	viper.SetDefault("SESSION_IDLE_TIMEOUT", "24h")

internal/db/queries.go

@@ -35,6 +35,7 @@ type IRCMessage struct {
 	Command string          `json:"command"`
 	From    string          `json:"from,omitempty"`
 	To      string          `json:"to,omitempty"`
+	Params  json.RawMessage `json:"params,omitempty"`
 	Body    json.RawMessage `json:"body,omitempty"`
 	TS      string          `json:"ts"`
 	Meta    json.RawMessage `json:"meta,omitempty"`
@@ -491,12 +492,17 @@ func (database *Database) GetSessionChannelIDs(
 func (database *Database) InsertMessage(
 	ctx context.Context,
 	command, from, target string,
+	params json.RawMessage,
 	body json.RawMessage,
 	meta json.RawMessage,
 ) (int64, string, error) {
 	msgUUID := uuid.New().String()
 	now := time.Now().UTC()
 
+	if params == nil {
+		params = json.RawMessage("[]")
+	}
+
 	if body == nil {
 		body = json.RawMessage("[]")
 	}
@@ -508,10 +514,10 @@ func (database *Database) InsertMessage(
 	res, err := database.conn.ExecContext(ctx,
 		`INSERT INTO messages
 		 (uuid, command, msg_from, msg_to,
-		  body, meta, created_at)
+		  params, body, meta, created_at)
-		 VALUES (?, ?, ?, ?, ?, ?, ?)`,
+		 VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
 		msgUUID, command, from, target,
-		string(body), string(meta), now)
+		string(params), string(body), string(meta), now)
 	if err != nil {
 		return 0, "", fmt.Errorf(
 			"insert message: %w", err,
@@ -578,7 +584,7 @@ func (database *Database) PollMessages(
 	rows, err := database.conn.QueryContext(ctx,
 		`SELECT cq.id, m.uuid, m.command,
 		   m.msg_from, m.msg_to,
-		   m.body, m.meta, m.created_at
+		   m.params, m.body, m.meta, m.created_at
 		 FROM client_queues cq
 		 INNER JOIN messages m
 		   ON m.id = cq.message_id
@@ -642,7 +648,7 @@ func (database *Database) queryHistory(
 	if beforeID > 0 {
 		rows, err := database.conn.QueryContext(ctx,
 			`SELECT id, uuid, command, msg_from,
-			   msg_to, body, meta, created_at
+			   msg_to, params, body, meta, created_at
 			 FROM messages
 			 WHERE msg_to = ? AND id < ?
 			   AND command = 'PRIVMSG'
@@ -659,7 +665,7 @@ func (database *Database) queryHistory(
 
 	rows, err := database.conn.QueryContext(ctx,
 		`SELECT id, uuid, command, msg_from,
-		   msg_to, body, meta, created_at
+		   msg_to, params, body, meta, created_at
 		 FROM messages
 		 WHERE msg_to = ?
 		   AND command = 'PRIVMSG'
@@ -684,16 +690,16 @@ func scanMessages(
 
 	for rows.Next() {
 		var (
-			msg        IRCMessage
+			msg                IRCMessage
-			qID        int64
+			qID                int64
-			body, meta string
+			params, body, meta string
-			createdAt  time.Time
+			createdAt          time.Time
 		)
 
 		err := rows.Scan(
 			&qID, &msg.ID, &msg.Command,
 			&msg.From, &msg.To,
-			&body, &meta, &createdAt,
+			&params, &body, &meta, &createdAt,
 		)
 		if err != nil {
 			return nil, fallbackQID, fmt.Errorf(
@@ -701,6 +707,10 @@ func scanMessages(
 			)
 		}
 
+		if params != "" && params != "[]" {
+			msg.Params = json.RawMessage(params)
+		}
+
 		msg.Body = json.RawMessage(body)
 		msg.Meta = json.RawMessage(meta)
 		msg.TS = createdAt.Format(time.RFC3339Nano)
@@ -943,3 +953,125 @@ func (database *Database) GetSessionChannels(
 
 	return scanChannels(rows)
 }
+
+// GetChannelCount returns the total number of channels.
+func (database *Database) GetChannelCount(
+	ctx context.Context,
+) (int64, error) {
+	var count int64
+
+	err := database.conn.QueryRowContext(
+		ctx,
+		"SELECT COUNT(*) FROM channels",
+	).Scan(&count)
+	if err != nil {
+		return 0, fmt.Errorf(
+			"get channel count: %w", err,
+		)
+	}
+
+	return count, nil
+}
+
+// ChannelInfoFull contains extended channel information.
+type ChannelInfoFull struct {
+	ID          int64  `json:"id"`
+	Name        string `json:"name"`
+	Topic       string `json:"topic"`
+	MemberCount int64  `json:"memberCount"`
+}
+
+// ListAllChannelsWithCounts returns every channel
+// with its member count.
+func (database *Database) ListAllChannelsWithCounts(
+	ctx context.Context,
+) ([]ChannelInfoFull, error) {
+	rows, err := database.conn.QueryContext(ctx,
+		`SELECT c.id, c.name, c.topic,
+		   COUNT(cm.session_id) AS member_count
+		 FROM channels c
+		 LEFT JOIN channel_members cm
+		   ON cm.channel_id = c.id
+		 GROUP BY c.id
+		 ORDER BY c.name`)
+	if err != nil {
+		return nil, fmt.Errorf(
+			"list channels with counts: %w", err,
+		)
+	}
+
+	defer func() { _ = rows.Close() }()
+
+	var out []ChannelInfoFull
+
+	for rows.Next() {
+		var chanInfo ChannelInfoFull
+
+		err = rows.Scan(
+			&chanInfo.ID, &chanInfo.Name,
+			&chanInfo.Topic, &chanInfo.MemberCount,
+		)
+		if err != nil {
+			return nil, fmt.Errorf(
+				"scan channel full: %w", err,
+			)
+		}
+
+		out = append(out, chanInfo)
+	}
+
+	err = rows.Err()
+	if err != nil {
+		return nil, fmt.Errorf("rows error: %w", err)
+	}
+
+	if out == nil {
+		out = []ChannelInfoFull{}
+	}
+
+	return out, nil
+}
+
+// GetChannelCreatedAt returns the creation time of a
+// channel.
+func (database *Database) GetChannelCreatedAt(
+	ctx context.Context,
+	channelID int64,
+) (time.Time, error) {
+	var createdAt time.Time
+
+	err := database.conn.QueryRowContext(
+		ctx,
+		"SELECT created_at FROM channels WHERE id = ?",
+		channelID,
+	).Scan(&createdAt)
+	if err != nil {
+		return time.Time{}, fmt.Errorf(
+			"get channel created_at: %w", err,
+		)
+	}
+
+	return createdAt, nil
+}
+
+// GetSessionCreatedAt returns the creation time of a
+// session.
+func (database *Database) GetSessionCreatedAt(
+	ctx context.Context,
+	sessionID int64,
+) (time.Time, error) {
+	var createdAt time.Time
+
+	err := database.conn.QueryRowContext(
+		ctx,
+		"SELECT created_at FROM sessions WHERE id = ?",
+		sessionID,
+	).Scan(&createdAt)
+	if err != nil {
+		return time.Time{}, fmt.Errorf(
+			"get session created_at: %w", err,
+		)
+	}
+
+	return createdAt, nil
+}

internal/db/queries_test.go

@@ -383,7 +383,7 @@ func TestInsertMessage(t *testing.T) {
 	body := json.RawMessage(`["hello"]`)
 
 	dbID, msgUUID, err := database.InsertMessage(
-		ctx, "PRIVMSG", "poller", "#test", body, nil,
+		ctx, "PRIVMSG", "poller", "#test", nil, body, nil,
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -417,7 +417,7 @@ func TestPollMessages(t *testing.T) {
 	body := json.RawMessage(`["hello"]`)
 
 	dbID, _, err := database.InsertMessage(
-		ctx, "PRIVMSG", "poller", "#test", body, nil,
+		ctx, "PRIVMSG", "poller", "#test", nil, body, nil,
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -475,7 +475,7 @@ func TestGetHistory(t *testing.T) {
 	for range msgCount {
 		_, _, err := database.InsertMessage(
 			ctx, "PRIVMSG", "user", "#hist",
-			json.RawMessage(`["msg"]`), nil,
+			nil, json.RawMessage(`["msg"]`), nil,
 		)
 		if err != nil {
 			t.Fatal(err)
@@ -627,7 +627,7 @@ func TestEnqueueToClient(t *testing.T) {
 	body := json.RawMessage(`["test"]`)
 
 	dbID, _, err := database.InsertMessage(
-		ctx, "PRIVMSG", "sender", "#ch", body, nil,
+		ctx, "PRIVMSG", "sender", "#ch", nil, body, nil,
 	)
 	if err != nil {
 		t.Fatal(err)

internal/db/schema/001_initial.sql

@@ -50,6 +50,7 @@ CREATE TABLE IF NOT EXISTS messages (
     command TEXT NOT NULL DEFAULT 'PRIVMSG',
     msg_from TEXT NOT NULL DEFAULT '',
     msg_to TEXT NOT NULL DEFAULT '',
+    params TEXT NOT NULL DEFAULT '[]',
     body TEXT NOT NULL DEFAULT '[]',
     meta TEXT NOT NULL DEFAULT '{}',
     created_at DATETIME DEFAULT CURRENT_TIMESTAMP

internal/globals/globals.go

@@ -2,6 +2,8 @@
 package globals
 
 import (
+	"time"
+
 	"go.uber.org/fx"
 )
 
@@ -15,16 +17,18 @@ var (
 
 // Globals holds application-wide metadata.
 type Globals struct {
-	Appname string
+	Appname   string
-	Version string
+	Version   string
+	StartTime time.Time
 }
 
 // New creates a new Globals instance from the global state.
 func New(_ fx.Lifecycle) (*Globals, error) {
-	n := &Globals{
+	result := &Globals{
-		Appname: Appname,
+		Appname:   Appname,
-		Version: Version,
+		Version:   Version,
+		StartTime: time.Now(),
 	}
 
-	return n, nil
+	return result, nil
 }

internal/handlers/api_test.go

@@ -115,8 +115,9 @@ func newTestServer(
 
 func newTestGlobals() *globals.Globals {
 	return &globals.Globals{
-		Appname: "neoirc-test",
+		Appname:   "neoirc-test",
-		Version: "test",
+		Version:   "test",
+		StartTime: time.Now(),
 	}
 }
 
@@ -462,6 +463,19 @@ func findMessage(
 	return false
 }
 
+func findNumeric(
+	msgs []map[string]any,
+	numeric string,
+) bool {
+	for _, msg := range msgs {
+		if msg[commandKey] == numeric {
+			return true
+		}
+	}
+
+	return false
+}
+
 // --- Tests ---
 
 func TestCreateSessionValid(t *testing.T) {
@@ -473,6 +487,47 @@ func TestCreateSessionValid(t *testing.T) {
 	}
 }
 
+func TestWelcomeNumeric(t *testing.T) {
+	tserver := newTestServer(t)
+	token := tserver.createSession("welcomer")
+
+	msgs, _ := tserver.pollMessages(token, 0)
+
+	if !findNumeric(msgs, "001") {
+		t.Fatalf(
+			"expected RPL_WELCOME (001), got %v",
+			msgs,
+		)
+	}
+}
+
+func TestJoinNumerics(t *testing.T) {
+	tserver := newTestServer(t)
+	token := tserver.createSession("jnumtest")
+
+	_, lastID := tserver.pollMessages(token, 0)
+
+	tserver.sendCommand(token, map[string]any{
+		commandKey: joinCmd, toKey: "#numtest",
+	})
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "353") {
+		t.Fatalf(
+			"expected RPL_NAMREPLY (353), got %v",
+			msgs,
+		)
+	}
+
+	if !findNumeric(msgs, "366") {
+		t.Fatalf(
+			"expected RPL_ENDOFNAMES (366), got %v",
+			msgs,
+		)
+	}
+}
+
 func TestCreateSessionDuplicate(t *testing.T) {
 	tserver := newTestServer(t)
 	tserver.createSession("alice")
@@ -668,11 +723,23 @@ func TestJoinMissingTo(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("joiner3")
 
+	// Drain initial MOTD/welcome numerics.
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(
 		token, map[string]any{commandKey: joinCmd},
 	)
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "461") {
+		t.Fatalf(
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -699,9 +766,9 @@ func TestChannelMessage(t *testing.T) {
 			bodyKey:    []string{"hello world"},
 		},
 	)
-	if status != http.StatusCreated {
+	if status != http.StatusOK {
 		t.Fatalf(
-			"expected 201, got %d: %v", status, result,
+			"expected 200, got %d: %v", status, result,
 		)
 	}
 
@@ -728,11 +795,22 @@ func TestMessageMissingBody(t *testing.T) {
 		commandKey: joinCmd, toKey: "#test",
 	})
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: privmsgCmd, toKey: "#test",
 	})
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "461") {
+		t.Fatalf(
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -740,12 +818,23 @@ func TestMessageMissingTo(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("noto")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: privmsgCmd,
 		bodyKey:    []string{"hello"},
 	})
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "461") {
+		t.Fatalf(
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -759,6 +848,8 @@ func TestNonMemberCannotSend(t *testing.T) {
 		commandKey: joinCmd, toKey: "#private",
 	})
 
+	_, lastID := tserver.pollMessages(aliceToken, 0)
+
 	// Alice tries to send without joining.
 	status, _ := tserver.sendCommand(
 		aliceToken,
@@ -768,8 +859,17 @@ func TestNonMemberCannotSend(t *testing.T) {
 			bodyKey:    []string{"sneaky"},
 		},
 	)
-	if status != http.StatusForbidden {
+	if status != http.StatusOK {
-		t.Fatalf("expected 403, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(aliceToken, lastID)
+
+	if !findNumeric(msgs, "442") {
+		t.Fatalf(
+			"expected ERR_NOTONCHANNEL (442), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -786,9 +886,9 @@ func TestDirectMessage(t *testing.T) {
 			bodyKey:    []string{"hey bob"},
 		},
 	)
-	if status != http.StatusCreated {
+	if status != http.StatusOK {
 		t.Fatalf(
-			"expected 201, got %d: %v", status, result,
+			"expected 200, got %d: %v", status, result,
 		)
 	}
 
@@ -818,13 +918,24 @@ func TestDMToNonexistentUser(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("dmsender")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: privmsgCmd,
 		toKey:      "nobody",
 		bodyKey:    []string{"hello?"},
 	})
-	if status != http.StatusNotFound {
+	if status != http.StatusOK {
-		t.Fatalf("expected 404, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "401") {
+		t.Fatalf(
+			"expected ERR_NOSUCHNICK (401), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -871,12 +982,23 @@ func TestNickCollision(t *testing.T) {
 
 	tserver.createSession("taken_nick")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: "NICK",
 		bodyKey:    []string{"taken_nick"},
 	})
-	if status != http.StatusConflict {
+	if status != http.StatusOK {
-		t.Fatalf("expected 409, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "433") {
+		t.Fatalf(
+			"expected ERR_NICKNAMEINUSE (433), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -884,12 +1006,23 @@ func TestNickInvalid(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("nickval")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: "NICK",
 		bodyKey:    []string{"bad nick!"},
 	})
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "432") {
+		t.Fatalf(
+			"expected ERR_ERRONEUSNICKNAME (432), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -897,11 +1030,22 @@ func TestNickEmptyBody(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("nicknobody")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(
 		token, map[string]any{commandKey: "NICK"},
 	)
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "461") {
+		t.Fatalf(
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -938,12 +1082,23 @@ func TestTopicMissingTo(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("topicnoto")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: "TOPIC",
 		bodyKey:    []string{"topic"},
 	})
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "461") {
+		t.Fatalf(
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -955,11 +1110,22 @@ func TestTopicMissingBody(t *testing.T) {
 		commandKey: joinCmd, toKey: "#topictest",
 	})
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(token, map[string]any{
 		commandKey: "TOPIC", toKey: "#topictest",
 	})
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "461") {
+		t.Fatalf(
+			"expected ERR_NEEDMOREPARAMS (461), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -1027,11 +1193,22 @@ func TestUnknownCommand(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("cmdtest")
 
+	_, lastID := tserver.pollMessages(token, 0)
+
 	status, _ := tserver.sendCommand(
 		token, map[string]any{commandKey: "BOGUS"},
 	)
-	if status != http.StatusBadRequest {
+	if status != http.StatusOK {
-		t.Fatalf("expected 400, got %d", status)
+		t.Fatalf("expected 200, got %d", status)
+	}
+
+	msgs, _ := tserver.pollMessages(token, lastID)
+
+	if !findNumeric(msgs, "421") {
+		t.Fatalf(
+			"expected ERR_UNKNOWNCOMMAND (421), got %v",
+			msgs,
+		)
 	}
 }
 
@@ -1278,12 +1455,18 @@ func TestLongPollTimeout(t *testing.T) {
 	tserver := newTestServer(t)
 	token := tserver.createSession("lp_timeout")
 
+	// Drain initial welcome/MOTD numerics.
+	_, lastID := tserver.pollMessages(token, 0)
+
 	start := time.Now()
 
 	resp, err := doRequestAuth(
 		t,
 		http.MethodGet,
-		tserver.url(apiMessages+"?timeout=1"),
+		tserver.url(fmt.Sprintf(
+			"%s?timeout=1&after=%d",
+			apiMessages, lastID,
+		)),
 		token,
 		nil,
 	)

internal/handlers/auth.go

@@ -80,7 +80,7 @@ func (hdlr *Handlers) handleRegister(
 		return
 	}
 
-	hdlr.deliverMOTD(request, clientID, sessionID)
+	hdlr.deliverMOTD(request, clientID, sessionID, payload.Nick)
 
 	hdlr.respondJSON(writer, request, map[string]any{
 		"id":    sessionID,
@@ -162,7 +162,7 @@ func (hdlr *Handlers) handleLogin(
 		return
 	}
 
-	sessionID, _, token, err :=
+	sessionID, clientID, token, err :=
 		hdlr.params.Database.LoginUser(
 			request.Context(),
 			payload.Nick,
@@ -178,6 +178,10 @@ func (hdlr *Handlers) handleLogin(
 		return
 	}
 
+	hdlr.deliverMOTD(
+		request, clientID, sessionID, payload.Nick,
+	)
+
 	hdlr.respondJSON(writer, request, map[string]any{
 		"id":    sessionID,
 		"nick":  payload.Nick,

web/dist/style.css

@@ -70,14 +70,14 @@ body,
 }
 
 .login-box .motd {
-  color: var(--text-dim);
+  color: var(--accent);
-  font-size: 12px;
+  font-size: 11px;
   margin-bottom: 20px;
   text-align: left;
-  white-space: pre-wrap;
+  white-space: pre;
   font-family: inherit;
-  border-left: 2px solid var(--border);
+  line-height: 1.2;
-  padding-left: 12px;
+  overflow-x: auto;
 }
 
 .login-box form {

web/src/app.jsx

@@ -71,7 +71,7 @@ function LoginScreen({ onLogin }) {
     const saved = localStorage.getItem("neoirc_token");
     if (saved) {
       api("/state")
-        .then((u) => onLogin(u.nick))
+        .then((u) => onLogin(u.nick, true))
         .catch(() => localStorage.removeItem("neoirc_token"));
     }
     inputRef.current?.focus();
@@ -419,6 +419,100 @@ function App() {
 
           break;
         }
+        case "322": {
+          // RPL_LIST — channel, member count, topic.
+          if (Array.isArray(msg.params) && msg.params.length >= 2) {
+            const chName = msg.params[0];
+            const count = msg.params[1];
+            const chTopic = body || "";
+            addMessage("Server", {
+              ...base,
+              text: `${chName} (${count} users): ${chTopic.trim()}`,
+              system: true,
+            });
+          }
+
+          break;
+        }
+        case "323":
+          addMessage("Server", {
+            ...base,
+            text: body || "End of channel list",
+            system: true,
+          });
+
+          break;
+        case "352": {
+          // RPL_WHOREPLY — channel, user, host, server, nick, flags.
+          if (Array.isArray(msg.params) && msg.params.length >= 5) {
+            const whoCh = msg.params[0];
+            const whoNick = msg.params[4];
+            const whoFlags = msg.params.length > 5 ? msg.params[5] : "";
+            addMessage("Server", {
+              ...base,
+              text: `${whoCh} ${whoNick} ${whoFlags}`,
+              system: true,
+            });
+          }
+
+          break;
+        }
+        case "315":
+          addMessage("Server", {
+            ...base,
+            text: body || "End of /WHO list",
+            system: true,
+          });
+
+          break;
+        case "311": {
+          // RPL_WHOISUSER — nick, user, host, *, realname.
+          if (Array.isArray(msg.params) && msg.params.length >= 1) {
+            const wiNick = msg.params[0];
+            addMessage("Server", {
+              ...base,
+              text: `${wiNick} (${body})`,
+              system: true,
+            });
+          }
+
+          break;
+        }
+        case "312": {
+          // RPL_WHOISSERVER — nick, server, server info.
+          if (Array.isArray(msg.params) && msg.params.length >= 2) {
+            const wiNick = msg.params[0];
+            const wiServer = msg.params[1];
+            addMessage("Server", {
+              ...base,
+              text: `${wiNick} on ${wiServer}`,
+              system: true,
+            });
+          }
+
+          break;
+        }
+        case "319": {
+          // RPL_WHOISCHANNELS — nick, channels.
+          if (Array.isArray(msg.params) && msg.params.length >= 1) {
+            const wiNick = msg.params[0];
+            addMessage("Server", {
+              ...base,
+              text: `${wiNick} is on: ${body}`,
+              system: true,
+            });
+          }
+
+          break;
+        }
+        case "318":
+          addMessage("Server", {
+            ...base,
+            text: body || "End of /WHOIS list",
+            system: true,
+          });
+
+          break;
         case "375":
         case "372":
         case "376":
@@ -497,6 +591,31 @@ function App() {
     inputRef.current?.focus();
   }, [activeTab]);
 
+  // Global keyboard handler — capture '/' to prevent
+  // Firefox quick search and redirect focus to the input.
+  useEffect(() => {
+    const handleGlobalKeyDown = (e) => {
+      if (
+        e.key === "/" &&
+        document.activeElement !== inputRef.current &&
+        !e.ctrlKey &&
+        !e.altKey &&
+        !e.metaKey
+      ) {
+        e.preventDefault();
+        inputRef.current?.focus();
+      }
+    };
+
+    document.addEventListener("keydown", handleGlobalKeyDown);
+
+    // Also focus input on initial mount.
+    inputRef.current?.focus();
+
+    return () =>
+      document.removeEventListener("keydown", handleGlobalKeyDown);
+  }, []);
+
   // Fetch topic for active channel.
   useEffect(() => {
     if (!loggedIn) return;
@@ -512,10 +631,24 @@ function App() {
   }, [loggedIn, activeTab, tabs]);
 
   const onLogin = useCallback(
-    async (userNick) => {
+    async (userNick, isResumed) => {
       setNick(userNick);
       setLoggedIn(true);
       addSystemMessage("Server", `Connected as ${userNick}`);
+
+      // Request MOTD on resumed sessions (new sessions get
+      // it automatically from the server during creation).
+      if (isResumed) {
+        try {
+          await api("/messages", {
+            method: "POST",
+            body: JSON.stringify({ command: "MOTD" }),
+          });
+        } catch (e) {
+          // MOTD is non-critical.
+        }
+      }
+
       const saved = JSON.parse(
         localStorage.getItem("neoirc_channels") || "[]",
       );
@@ -791,18 +924,127 @@ function App() {
 
         break;
       }
+      case "/motd": {
+        try {
+          await api("/messages", {
+            method: "POST",
+            body: JSON.stringify({ command: "MOTD" }),
+          });
+        } catch (err) {
+          addSystemMessage(
+            "Server",
+            `Failed to request MOTD: ${err.data?.error || "error"}`,
+          );
+        }
+
+        break;
+      }
+      case "/query": {
+        if (parts[1]) {
+          const target = parts[1];
+          openDM(target);
+          const msgText = parts.slice(2).join(" ");
+          if (msgText) {
+            try {
+              await api("/messages", {
+                method: "POST",
+                body: JSON.stringify({
+                  command: "PRIVMSG",
+                  to: target,
+                  body: [msgText],
+                }),
+              });
+            } catch (err) {
+              addSystemMessage(
+                "Server",
+                `Message failed: ${err.data?.error || "error"}`,
+              );
+            }
+          }
+        } else {
+          addSystemMessage("Server", "Usage: /query <nick> [message]");
+        }
+
+        break;
+      }
+      case "/list": {
+        try {
+          await api("/messages", {
+            method: "POST",
+            body: JSON.stringify({ command: "LIST" }),
+          });
+        } catch (err) {
+          addSystemMessage(
+            "Server",
+            `Failed to list channels: ${err.data?.error || "error"}`,
+          );
+        }
+
+        break;
+      }
+      case "/who": {
+        const whoTarget = parts[1] || (tab.type === "channel" ? tab.name : "");
+        if (whoTarget) {
+          try {
+            await api("/messages", {
+              method: "POST",
+              body: JSON.stringify({ command: "WHO", to: whoTarget }),
+            });
+          } catch (err) {
+            addSystemMessage(
+              "Server",
+              `WHO failed: ${err.data?.error || "error"}`,
+            );
+          }
+        } else {
+          addSystemMessage("Server", "Usage: /who #channel");
+        }
+
+        break;
+      }
+      case "/whois": {
+        if (parts[1]) {
+          try {
+            await api("/messages", {
+              method: "POST",
+              body: JSON.stringify({ command: "WHOIS", to: parts[1] }),
+            });
+          } catch (err) {
+            addSystemMessage(
+              "Server",
+              `WHOIS failed: ${err.data?.error || "error"}`,
+            );
+          }
+        } else {
+          addSystemMessage("Server", "Usage: /whois <nick>");
+        }
+
+        break;
+      }
+      case "/clear": {
+        const clearTarget = tab.name;
+        setMessages((prev) => ({ ...prev, [clearTarget]: [] }));
+
+        break;
+      }
       case "/help": {
         const helpLines = [
           "Available commands:",
-          "  /join #channel     — Join a channel",
+          "  /join #channel        — Join a channel",
-          "  /part [reason]     — Part the current channel",
+          "  /part [reason]        — Part the current channel",
-          "  /msg nick message  — Send a private message",
+          "  /msg nick message     — Send a private message",
-          "  /me action         — Send an action",
+          "  /query nick [message] — Open a DM tab (optionally send a message)",
-          "  /nick newnick      — Change your nickname",
+          "  /me action            — Send an action",
-          "  /topic [text]      — View or set channel topic",
+          "  /nick newnick         — Change your nickname",
-          "  /mode +/-flags     — Set channel modes",
+          "  /topic [text]         — View or set channel topic",
-          "  /quit [reason]     — Disconnect from server",
+          "  /mode +/-flags        — Set channel modes",
-          "  /help              — Show this help",
+          "  /motd                 — Display the message of the day",
+          "  /list                 — List all channels",
+          "  /who [#channel]       — List users in a channel",
+          "  /whois nick           — Show info about a user",
+          "  /clear                — Clear messages in the current tab",
+          "  /quit [reason]        — Disconnect from server",
+          "  /help                 — Show this help",
         ];
         for (const line of helpLines) {
           addSystemMessage("Server", line);

web/src/style.css

@@ -70,14 +70,14 @@ body,
 }
 
 .login-box .motd {
-  color: var(--text-dim);
+  color: var(--accent);
-  font-size: 12px;
+  font-size: 11px;
   margin-bottom: 20px;
   text-align: left;
-  white-space: pre-wrap;
+  white-space: pre;
   font-family: inherit;
-  border-left: 2px solid var(--border);
+  line-height: 1.2;
-  padding-left: 12px;
+  overflow-x: auto;
 }
 
 .login-box form {