fix: 9 web UI bugs - cost tracker, model badge, empty state, provider tabs, memory tools, session save, dark mode, view toggles

- Cost tracker: fix event type message -> message_end, handle usage.input fallback
- Model badge: update immediately on model select via onModelSelect hook
- Empty state: hide completely when hasMessages (not after LLM responds)
- Provider tabs: add renderProviderTabs() to ModelSelector content + filtering
- Memory tools: register memory_save/recall in tool index, export from web-ui, add to createTools
- Session save: save before newSession, relax shouldSaveSession to user-only, title fallback
- Dark mode: add text-foreground to memory-manager dialog + inputs
- View toggles: add tool-message and thinking-block element CSS selectors
- Empty state faded: return empty html instead of ghost mascot

packages/web-ui/example/src/app.css

@@ -4,6 +4,7 @@
 /* ============================================================
    Utility message visibility toggles
    ============================================================ */
+#chat-wrapper.hide-tool-calls tool-message,
 #chat-wrapper.hide-tool-calls [data-message-type="tool"],
 #chat-wrapper.hide-tool-calls [data-tool-call],
 #chat-wrapper.hide-tool-calls .tool-call-renderer,
@@ -11,6 +12,7 @@
   display: none !important;
 }
 
+#chat-wrapper.hide-thinking thinking-block,
 #chat-wrapper.hide-thinking [data-message-type="thinking"],
 #chat-wrapper.hide-thinking .thinking-block {
   display: none !important;

packages/web-ui/example/src/components/cost-tracker.ts

@@ -42,11 +42,11 @@ export class CostTracker extends LitElement {
 		this.requestCount = 0;
 		this.modelId = agent.state.model?.id || "";
 		this.unsubscribe = agent.subscribe((event) => {
-			if (event.type === "message" && event.message.role === "assistant") {
+			if (event.type === "message_end" && event.message.role === "assistant") {
 				const msg = event.message as any;
 				if (msg.usage) {
-					this.inputTokens += msg.usage.inputTokens || 0;
-					this.outputTokens += msg.usage.outputTokens || 0;
+					this.inputTokens += msg.usage.inputTokens || msg.usage.input || 0;
+					this.outputTokens += msg.usage.outputTokens || msg.usage.output || 0;
 					this.requestCount += 1;
 				}
 			}

packages/web-ui/example/src/components/empty-state.ts

@@ -23,13 +23,7 @@ export class JaeEmptyState extends LitElement {
 		if (!this.visible) return html``;
 
 		if (this.faded) {
-			return html`
-        <div class="flex flex-col items-center justify-center h-full select-none"
-             style="pointer-events:none">
-          <img src="/mascot/jae-default.png" alt="JAE"
-               style="width:10rem;height:auto;opacity:0.04;filter:grayscale(40%)" />
-        </div>
-      `;
+			return html``;
 		}
 
 		return html`

packages/web-ui/example/src/components/memory-manager.ts

@@ -114,13 +114,13 @@ export class MemoryManager extends LitElement {
       <div class="fixed inset-0 z-50 flex items-center justify-center bg-black/50" @click=${(e: Event) => {
 			if (e.target === e.currentTarget) this.hide();
 		}}>
-        <div class="bg-popover border border-border rounded-xl shadow-2xl w-full max-w-2xl mx-4 flex flex-col max-h-[80vh]">
+        <div class="bg-popover text-foreground border border-border rounded-xl shadow-2xl w-full max-w-2xl mx-4 flex flex-col max-h-[80vh]">
           <div class="flex items-center justify-between px-6 py-4 border-b border-border shrink-0">
             <h2 class="font-semibold text-lg">&#x1F9E0; Memory Manager</h2>
             <button class="text-muted-foreground hover:text-foreground" @click=${() => this.hide()}>&#x2715;</button>
           </div>
           <div class="px-6 py-3 border-b border-border shrink-0">
-            <input type="text" placeholder="Filter memories..." class="w-full bg-secondary rounded-lg px-3 py-2 text-sm outline-none"
+            <input type="text" placeholder="Filter memories..." class="w-full bg-secondary text-foreground rounded-lg px-3 py-2 text-sm outline-none"
               .value=${this.filter} @input=${(e: Event) => {
 						this.filter = (e.target as HTMLInputElement).value;
 					}} />

packages/web-ui/example/src/main.ts

@@ -15,13 +15,14 @@ import {
 	SessionListDialog,
 	SessionsStore,
 	SettingsDialog,
+	ModelSelector,
 	SettingsStore,
 	setAppStorage,
 } from "@jaeswift/jae-web-ui";
 import { html, render } from "lit";
 import { Brain, Download, History, Keyboard, Plus, Settings } from "lucide";
 import "./app.css";
-import { createImageGenTool, createTTSTool, createWebSearchTool } from "@jaeswift/jae-web-ui";
+import { createImageGenTool, createMemoryTools, createTTSTool, createWebSearchTool } from "@jaeswift/jae-web-ui";
 import { icon } from "@mariozechner/mini-lit";
 import { Button } from "@mariozechner/mini-lit/dist/Button.js";
 import { Input } from "@mariozechner/mini-lit/dist/Input.js";
@@ -252,15 +253,16 @@ const generateTitle = (messages: AgentMessage[]): string => {
 };
 
 const shouldSaveSession = (messages: AgentMessage[]): boolean => {
-	const hasUserMsg = messages.some((m: any) => m.role === "user" || m.role === "user-with-attachments");
-	const hasAssistantMsg = messages.some((m: any) => m.role === "assistant");
-	return hasUserMsg && hasAssistantMsg;
+	return messages.some((m: any) => m.role === "user" || m.role === "user-with-attachments");
 };
 
 const saveSession = async () => {
-	if (!storage.sessions || !currentSessionId || !agent || !currentTitle) return;
+	if (!storage.sessions || !currentSessionId || !agent) return;
 	const state = agent.state;
 	if (!shouldSaveSession(state.messages)) return;
+	if (!currentTitle) {
+		currentTitle = generateTitle(state.messages) || "Untitled chat";
+	}
 	try {
 		const sessionData = {
 			id: currentSessionId,
@@ -338,11 +340,27 @@ const createAgent = async (initialState?: Partial<AgentState>) => {
 		createTools: async (runtimeProvidersFactory: any) => {
 			const replTool = createJavaScriptReplTool();
 			replTool.runtimeProvidersFactory = runtimeProvidersFactory;
-			return [replTool, createWebSearchTool(), createImageGenTool(), createTTSTool()];
+			return [replTool, createWebSearchTool(), createImageGenTool(), createTTSTool(), ...createMemoryTools()];
 		},
 	});
 	costTracker.bindAgent(agent);
 	chatPanel?.setAgent(agent);
+	// Hook: live model badge + immediate empty state hide
+	requestAnimationFrame(() => {
+		if (chatPanel?.agentInterface) {
+			(chatPanel.agentInterface as any).onModelSelect = () => {
+				ModelSelector.open(agent.state.model, (model: any) => {
+					agent.setModel(model);
+					(chatPanel.agentInterface as any).requestUpdate();
+					renderApp();
+				});
+			};
+			(chatPanel.agentInterface as any).onBeforeSend = async () => {
+				hasStarted = true;
+				renderApp();
+			};
+		}
+	});
 	if (!currentSessionId) currentSessionId = crypto.randomUUID();
 };
 
@@ -366,12 +384,19 @@ const loadSession = async (sessionId: string): Promise<boolean> => {
 	return true;
 };
 
-const newSession = () => {
+const newSession = async () => {
+	// Save current session before resetting
+	if (agent && agent.state.messages.length > 0 && currentSessionId) {
+		if (!currentTitle) currentTitle = generateTitle(agent.state.messages) || "Untitled chat";
+		await saveSession();
+	}
 	currentSessionId = undefined;
 	currentTitle = "";
 	isEditingTitle = false;
 	hasStarted = false;
-	createAgent().then(() => renderApp());
+	await createAgent();
+	await refreshSidebar();
+	renderApp();
 };
 
 const handleSuggestion = (e: Event) => {
@@ -548,9 +573,11 @@ ${sidebar}
   }}
 ></div>
 <div class="flex flex-col flex-1 min-w-0 min-h-0 relative">
-<div class="absolute inset-x-0 top-0 z-10 flex flex-col" style="bottom:130px;pointer-events:${hasMessages ? "none" : "auto"}" @suggestion=${handleSuggestion}>
-<jae-empty-state .faded=${hasMessages} style="display:flex;flex-direction:column;flex:1;width:100%;min-height:0"></jae-empty-state>
+${!hasMessages ? html`
+<div class="absolute inset-x-0 top-0 z-10 flex flex-col" style="bottom:130px" @suggestion=${handleSuggestion}>
+<jae-empty-state style="display:flex;flex-direction:column;flex:1;width:100%;min-height:0"></jae-empty-state>
 </div>
+` : html``}
 <div id="chat-wrapper" class="flex flex-col flex-1 min-h-0" >
 ${chatPanel}
 </div>

packages/web-ui/src/dialogs/ModelSelector.ts

@@ -246,6 +246,9 @@ export class ModelSelector extends DialogBase {
 		if (this.filterVision) {
 			filteredModels = filteredModels.filter(({ model }) => model.input.includes("image"));
 		}
+		if (this.filterProvider) {
+			filteredModels = filteredModels.filter(({ provider }) => provider === this.filterProvider);
+		}
 
 		// Sort: when not searching, current model first then by provider.
 		// When searching, preserve the score-based order from above,
@@ -376,6 +379,8 @@ export class ModelSelector extends DialogBase {
 						children: html`<span class="inline-flex items-center gap-1">${icon(ImageIcon, "sm")} ${i18n("Vision")}</span>`,
 					})}
 				</div>
+			
+		${this.renderProviderTabs()}
 		</div>
 
 			<!-- Scrollable model list -->

packages/web-ui/src/index.ts

@@ -118,6 +118,7 @@ export type { ToolRenderer, ToolRenderResult } from "./tools/types.js";
 export { createTTSTool, ttsTool } from "./tools/voice-tts.js";
 // Venice / community tools
 export { createWebSearchTool, webSearchTool } from "./tools/web-search.js";
+export { createMemoryTools, saveMemoryTool, recallMemoryTool } from "./tools/memory-tool.js";
 export type { Attachment } from "./utils/attachment-utils.js";
 // Utils
 export { loadAttachment } from "./utils/attachment-utils.js";

packages/web-ui/src/tools/index.ts

@@ -1,6 +1,7 @@
 import type { ToolResultMessage } from "@jaeswift/jae-ai";
 import "./javascript-repl.js"; // Auto-registers the renderer
-import "./extract-document.js"; // Auto-registers the renderer
+import "./extract-document.js";
+import "./memory-tool.js"; // Auto-registers the renderer
 import { getToolRenderer, registerToolRenderer } from "./renderer-registry.js";
 import { BashRenderer } from "./renderers/BashRenderer.js";
 import { DefaultRenderer } from "./renderers/DefaultRenderer.js";
@@ -48,3 +49,4 @@ export { getToolRenderer, registerToolRenderer };
 export { createImageGenTool, type ImageGenDetails, imageGenTool } from "./image-gen.js";
 export { createTTSTool, type TTSDetails, ttsTool } from "./voice-tts.js";
 export { createWebSearchTool, type WebSearchDetails, type WebSearchResult, webSearchTool } from "./web-search.js";
+export { createMemoryTools, saveMemoryTool, recallMemoryTool } from "./memory-tool.js";