fix: IRC SPA cleanup — /motd, /query, Firefox / key, default MOTD (#58)

## Summary

Fixes IRC client SPA issues reported in [issue #57](#57).

## Changes

### Server-side
- **Default MOTD**: Added figlet-style ASCII art MOTD for "neoirc" as the default when no MOTD is configured via environment/config
- **MOTD command handler**: Added `MOTD` case to `dispatchCommand` so clients can re-request the MOTD at any time (proper IRC behavior)

### SPA (web client)
- **`/motd` command**: Sends MOTD request to server, displays 375/372/376 numerics in server window
- **`/query nick [message]`**: Opens a DM tab with the specified user, optionally sends a message
- **`/clear`**: Clears messages in the current tab
- **Firefox `/` key fix**: Added global `keydown` listener that captures `/` when input is not focused, preventing Firefox quick search and redirecting focus to the input element. Also auto-focuses input on SPA init.
- **MOTD on resumed sessions**: When restoring from a saved token, the MOTD is re-requested so it always appears in the server window
- **Updated `/help`**: Shows all new commands with descriptions
- **Login screen MOTD styling**: Improved for ASCII art display (monospace, proper line height)

## Testing
- `docker build .` passes (includes `make check` with tests, lint, fmt-check)
- All existing tests pass with no modifications

closes #57

<!-- session: agent:sdlc-manager:subagent:7c880fec-f818-49ff-a548-2d3c26758bb6 -->

Co-authored-by: user <user@Mac.lan guest wan>
Reviewed-on: #58
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

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/handlers/api.go

@@ -670,13 +670,12 @@ func (hdlr *Handlers) dispatchCommand(
 		hdlr.handleQuit(
 			writer, request, sessionID, nick, body,
 		)
-	case "PING":
-		hdlr.respondJSON(writer, request,
-			map[string]string{
-				"command": "PONG",
-				"from":    hdlr.serverName(),
-			},
-			http.StatusOK)
+	case "MOTD", "LIST", "WHO", "WHOIS", "PING":
+		hdlr.dispatchInfoCommand(
+			writer, request,
+			sessionID, clientID, nick,
+			command, target, bodyLines,
+		)
 	default:
 		hdlr.enqueueNumeric(
 			request.Context(), clientID,
@@ -1391,6 +1390,269 @@ func (hdlr *Handlers) executeTopic(
 		http.StatusOK)
 }
 
+// dispatchInfoCommand handles informational IRC commands
+// that produce server-side numerics (MOTD, LIST, WHO,
+// WHOIS, PING).
+func (hdlr *Handlers) dispatchInfoCommand(
+	writer http.ResponseWriter,
+	request *http.Request,
+	sessionID, clientID int64,
+	nick, command, target string,
+	bodyLines func() []string,
+) {
+	okResp := map[string]string{"status": "ok"}
+
+	switch command {
+	case "MOTD":
+		hdlr.deliverMOTD(
+			request, clientID, sessionID, nick,
+		)
+	case "LIST":
+		hdlr.handleListCmd(
+			request, clientID, sessionID, nick,
+		)
+	case "WHO":
+		hdlr.handleWhoCmd(
+			request, clientID, sessionID, nick,
+			target,
+		)
+	case "WHOIS":
+		hdlr.handleWhoisCmd(
+			request, clientID, sessionID, nick,
+			target, bodyLines,
+		)
+	case "PING":
+		hdlr.respondJSON(writer, request,
+			map[string]string{
+				"command": "PONG",
+				"from":    hdlr.serverName(),
+			},
+			http.StatusOK)
+
+		return
+	}
+
+	hdlr.respondJSON(
+		writer, request, okResp, http.StatusOK,
+	)
+}
+
+// handleListCmd sends RPL_LIST (322) for each channel,
+// then sends 323 to signal the end of the list.
+func (hdlr *Handlers) handleListCmd(
+	request *http.Request,
+	clientID, sessionID int64,
+	nick string,
+) {
+	ctx := request.Context()
+
+	channels, err := hdlr.params.Database.ListAllChannels(
+		ctx,
+	)
+	if err != nil {
+		hdlr.enqueueNumeric(
+			ctx, clientID, "323", nick, nil,
+			"End of /LIST",
+		)
+		hdlr.broker.Notify(sessionID)
+
+		return
+	}
+
+	for _, channel := range channels {
+		memberIDs, _ :=
+			hdlr.params.Database.GetChannelMemberIDs(
+				ctx, channel.ID,
+			)
+
+		count := strconv.Itoa(len(memberIDs))
+		topic := channel.Topic
+
+		if topic == "" {
+			topic = " "
+		}
+
+		hdlr.enqueueNumeric(
+			ctx, clientID, "322", nick,
+			[]string{channel.Name, count}, topic,
+		)
+	}
+
+	hdlr.enqueueNumeric(
+		ctx, clientID, "323", nick, nil,
+		"End of /LIST",
+	)
+	hdlr.broker.Notify(sessionID)
+}
+
+// handleWhoCmd sends RPL_WHOREPLY (352) for each member
+// of the target channel, followed by RPL_ENDOFWHO (315).
+func (hdlr *Handlers) handleWhoCmd(
+	request *http.Request,
+	clientID, sessionID int64,
+	nick, target string,
+) {
+	ctx := request.Context()
+
+	if target == "" {
+		hdlr.enqueueNumeric(
+			ctx, clientID, "461", nick,
+			[]string{"WHO"}, "Not enough parameters",
+		)
+		hdlr.broker.Notify(sessionID)
+
+		return
+	}
+
+	channel := target
+	if !strings.HasPrefix(channel, "#") {
+		channel = "#" + channel
+	}
+
+	chID, err := hdlr.params.Database.GetChannelByName(
+		ctx, channel,
+	)
+	if err != nil {
+		hdlr.enqueueNumeric(
+			ctx, clientID, "315", nick,
+			[]string{channel}, "End of /WHO list",
+		)
+		hdlr.broker.Notify(sessionID)
+
+		return
+	}
+
+	members, err := hdlr.params.Database.ChannelMembers(
+		ctx, chID,
+	)
+	if err == nil {
+		srvName := hdlr.serverName()
+
+		for _, mem := range members {
+			hdlr.enqueueNumeric(
+				ctx, clientID, "352", nick,
+				[]string{
+					channel, mem.Nick, "neoirc",
+					srvName, mem.Nick, "H",
+				},
+				"0 "+mem.Nick,
+			)
+		}
+	}
+
+	hdlr.enqueueNumeric(
+		ctx, clientID, "315", nick,
+		[]string{channel}, "End of /WHO list",
+	)
+	hdlr.broker.Notify(sessionID)
+}
+
+// handleWhoisCmd sends WHOIS reply numerics (311, 312,
+// 319, 318) for the target nick.
+func (hdlr *Handlers) handleWhoisCmd(
+	request *http.Request,
+	clientID, sessionID int64,
+	nick, target string,
+	bodyLines func() []string,
+) {
+	ctx := request.Context()
+
+	whoisNick := target
+	if whoisNick == "" {
+		lines := bodyLines()
+		if len(lines) > 0 {
+			whoisNick = strings.TrimSpace(lines[0])
+		}
+	}
+
+	if whoisNick == "" {
+		hdlr.enqueueNumeric(
+			ctx, clientID, "461", nick,
+			[]string{"WHOIS"}, "Not enough parameters",
+		)
+		hdlr.broker.Notify(sessionID)
+
+		return
+	}
+
+	targetSID, err :=
+		hdlr.params.Database.GetSessionByNick(
+			ctx, whoisNick,
+		)
+	if err != nil {
+		hdlr.enqueueNumeric(
+			ctx, clientID, "401", nick,
+			[]string{whoisNick},
+			"No such nick/channel",
+		)
+		hdlr.enqueueNumeric(
+			ctx, clientID, "318", nick,
+			[]string{whoisNick},
+			"End of /WHOIS list",
+		)
+		hdlr.broker.Notify(sessionID)
+
+		return
+	}
+
+	hdlr.sendWhoisNumerics(
+		ctx, clientID, sessionID, nick,
+		whoisNick, targetSID,
+	)
+}
+
+// sendWhoisNumerics emits 311/312/319/318 for a
+// resolved WHOIS target.
+func (hdlr *Handlers) sendWhoisNumerics(
+	ctx context.Context,
+	clientID, sessionID int64,
+	nick, whoisNick string,
+	targetSID int64,
+) {
+	srvName := hdlr.serverName()
+
+	// 311 RPL_WHOISUSER
+	hdlr.enqueueNumeric(
+		ctx, clientID, "311", nick,
+		[]string{whoisNick, whoisNick, "neoirc", "*"},
+		whoisNick,
+	)
+
+	// 312 RPL_WHOISSERVER
+	hdlr.enqueueNumeric(
+		ctx, clientID, "312", nick,
+		[]string{whoisNick, srvName},
+		srvName,
+	)
+
+	// 319 RPL_WHOISCHANNELS
+	channels, _ := hdlr.params.Database.GetSessionChannels(
+		ctx, targetSID,
+	)
+
+	if len(channels) > 0 {
+		names := make([]string, 0, len(channels))
+
+		for _, chanInfo := range channels {
+			names = append(names, chanInfo.Name)
+		}
+
+		hdlr.enqueueNumeric(
+			ctx, clientID, "319", nick,
+			[]string{whoisNick},
+			strings.Join(names, " "),
+		)
+	}
+
+	// 318 RPL_ENDOFWHOIS
+	hdlr.enqueueNumeric(
+		ctx, clientID, "318", nick,
+		[]string{whoisNick},
+		"End of /WHOIS list",
+	)
+	hdlr.broker.Notify(sessionID)
+}
+
 func (hdlr *Handlers) handleQuit(
 	writer http.ResponseWriter,
 	request *http.Request,

web/dist/style.css

@@ -70,14 +70,14 @@ body,
 }
 
 .login-box .motd {
-  color: var(--text-dim);
-  font-size: 12px;
+  color: var(--accent);
+  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);
-  padding-left: 12px;
+  line-height: 1.2;
+  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",
-          "  /part [reason]     — Part the current channel",
-          "  /msg nick message  — Send a private message",
-          "  /me action         — Send an action",
-          "  /nick newnick      — Change your nickname",
-          "  /topic [text]      — View or set channel topic",
-          "  /mode +/-flags     — Set channel modes",
-          "  /quit [reason]     — Disconnect from server",
-          "  /help              — Show this help",
+          "  /join #channel        — Join a channel",
+          "  /part [reason]        — Part the current channel",
+          "  /msg nick message     — Send a private message",
+          "  /query nick [message] — Open a DM tab (optionally send a message)",
+          "  /me action            — Send an action",
+          "  /nick newnick         — Change your nickname",
+          "  /topic [text]         — View or set channel topic",
+          "  /mode +/-flags        — Set channel modes",
+          "  /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);
-  font-size: 12px;
+  color: var(--accent);
+  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);
-  padding-left: 12px;
+  line-height: 1.2;
+  overflow-x: auto;
 }
 
 .login-box form {