feat(ui): make chat the landing view

ui/src/ui/app.ts

@@ -70,7 +70,7 @@ const DEFAULT_CRON_FORM: CronFormState = {
 export class ClawdisApp extends LitElement {
   @state() settings: UiSettings = loadSettings();
   @state() password = "";
-  @state() tab: Tab = "overview";
+  @state() tab: Tab = "chat";
   @state() connected = false;
   @state() hello: GatewayHelloOk | null = null;
   @state() lastError: string | null = null;
@@ -156,6 +156,7 @@ export class ClawdisApp extends LitElement {
   @state() debugCallError: string | null = null;
 
   client: GatewayBrowserClient | null = null;
+  private chatScrollFrame: number | null = null;
 
   createRenderRoot() {
     return this;
@@ -166,6 +167,18 @@ export class ClawdisApp extends LitElement {
     this.connect();
   }
 
+  protected updated(changed: Map<PropertyKey, unknown>) {
+    if (
+      this.tab === "chat" &&
+      (changed.has("chatMessages") ||
+        changed.has("chatStream") ||
+        changed.has("chatLoading") ||
+        changed.has("tab"))
+    ) {
+      this.scheduleChatScroll();
+    }
+  }
+
   connect() {
     this.lastError = null;
     this.hello = null;
@@ -199,6 +212,16 @@ export class ClawdisApp extends LitElement {
     this.client.start();
   }
 
+  private scheduleChatScroll() {
+    if (this.chatScrollFrame) cancelAnimationFrame(this.chatScrollFrame);
+    this.chatScrollFrame = requestAnimationFrame(() => {
+      this.chatScrollFrame = null;
+      const container = this.querySelector(".messages") as HTMLElement | null;
+      if (!container) return;
+      container.scrollTop = container.scrollHeight;
+    });
+  }
+
   private onEvent(evt: GatewayEventFrame) {
     this.eventLog = [
       { ts: Date.now(), event: evt.event, payload: evt.payload },

ui/src/ui/navigation.ts

@@ -1,10 +1,11 @@
 export const TAB_GROUPS = [
+  { label: "Chat", tabs: ["chat"] },
   {
     label: "Control",
     tabs: ["overview", "connections", "instances", "sessions", "cron"],
   },
-  { label: "Agent", tabs: ["chat", "skills", "nodes"] },
+  { label: "Agent", tabs: ["skills", "nodes"] },
-  { label: "Gateway", tabs: ["config", "debug"] },
+  { label: "Settings", tabs: ["config", "debug"] },
 ] as const;
 
 export type Tab =
@@ -72,4 +73,3 @@ export function subtitleForTab(tab: Tab) {
       return "";
   }
 }
-

ui/src/ui/views/chat.ts

@@ -38,6 +38,7 @@ export function renderChat(props: ChatProps) {
       </div>
 
       <div class="messages" style="margin-top: 12px;">
+        ${props.loading ? html`<div class="muted">Loading chat…</div>` : nothing}
         ${props.messages.map((m) => renderMessage(m))}
         ${props.stream
           ? html`${renderMessage({
@@ -113,4 +114,3 @@ function extractText(message: unknown): string | null {
   if (typeof m.text === "string") return m.text;
   return null;
 }
-