fix(webui): complete temporary chat mode

webui/src/lib/nanobot-client.ts

@@ -174,8 +174,8 @@ export class NanobotClient {
   private static readonly PENDING_INBOUND_MAX = 2000;
   // chat_ids we've attached to since connect; re-attached after reconnects
   private knownChats = new Set<string>();
-  /** Temporary chat is connection-owned and intentionally not reattached. */
-  private temporaryChatId: string | null = null;
+  /** Temporary chats are connection-owned and intentionally not reattached. */
+  private temporaryChatIds = new Set<string>();
   /** Wall-clock run strip: updated from ``goal_status`` even with no ``onChat`` subscriber. */
   private runStartedAtByChatId = new Map<string, number>();
   /** Per-turn clocks let a rejected newer turn fall back without borrowing its timer. */
@@ -285,6 +285,16 @@ export class NanobotClient {
     return v === undefined ? null : v;
   }
 
+  /** Clear the optimistic run state immediately after the user stops a turn. */
+  finishRunLocally(chatId: string): void {
+    const unsettled = [...(this.unsettledRunTurnIdsByChatId.get(chatId) ?? [])];
+    for (const turnId of unsettled) this.settleRunTurn(chatId, turnId);
+    this.latestRunTurnIdByChatId.delete(chatId);
+    if (this.runStartedAtByChatId.delete(chatId)) {
+      this.emitRunStatus(chatId, null);
+    }
+  }
+
   /** Refresh transport policy after bootstrap token renewal. */
   updateMaxFrameBytes(maxFrameBytes?: number): void {
     this.maxFrameBytes = this.normalizeMaxFrameBytes(maxFrameBytes);
@@ -806,7 +816,7 @@ export class NanobotClient {
 
   attach(chatId: string): void {
     if (isTemporaryChatId(chatId)) {
-      this.temporaryChatId = chatId;
+      this.temporaryChatIds.add(chatId);
       return;
     }
     this.knownChats.add(chatId);
@@ -831,7 +841,7 @@ export class NanobotClient {
     },
   ): void {
     const temporary = isTemporaryChatId(chatId);
-    if (temporary) this.temporaryChatId = chatId;
+    if (temporary) this.temporaryChatIds.add(chatId);
     if (!temporary) this.knownChats.add(chatId);
     const frame: Outbound = {
       type: "message",
@@ -1261,11 +1271,13 @@ export class NanobotClient {
   }
 
   private clearTemporaryChats(): void {
-    if (this.temporaryChatId) this.forgetTemporaryChat(this.temporaryChatId);
+    for (const chatId of [...this.temporaryChatIds]) {
+      this.forgetTemporaryChat(chatId);
+    }
   }
 
   private forgetTemporaryChat(chatId: string): void {
-    if (this.temporaryChatId === chatId) this.temporaryChatId = null;
+    this.temporaryChatIds.delete(chatId);
     this.knownChats.delete(chatId);
     this.chatHandlers.delete(chatId);
     this.pendingInboundByChat.delete(chatId);

webui/src/lib/temporary-chat.ts

@@ -1,17 +1,23 @@
 import type { ChatSummary } from "./types";
 
 export const TEMPORARY_CHAT_ID_PREFIX = "temporary-";
-export const TEMPORARY_CHAT_ROUTE_KEY = "__temporary_chat__";
+const WEBSOCKET_SESSION_KEY_PREFIX = "websocket:";
 
 export function isTemporaryChatId(value: string): boolean {
   return value.startsWith(TEMPORARY_CHAT_ID_PREFIX);
 }
 
+export function temporaryChatIdFromSessionKey(value: string | null): string | null {
+  if (!value?.startsWith(WEBSOCKET_SESSION_KEY_PREFIX)) return null;
+  const chatId = value.slice(WEBSOCKET_SESSION_KEY_PREFIX.length);
+  return isTemporaryChatId(chatId) ? chatId : null;
+}
+
 export function createTemporaryChatSession(): ChatSummary {
   const chatId = `${TEMPORARY_CHAT_ID_PREFIX}${crypto.randomUUID()}`;
   const now = new Date().toISOString();
   return {
-    key: `websocket:${chatId}`,
+    key: `${WEBSOCKET_SESSION_KEY_PREFIX}${chatId}`,
     channel: "websocket",
     chatId,
     createdAt: now,