Improve chat feedback and drafts

src/client/src/components/ChatView.ts

@@ -30,16 +30,83 @@ export class ChatView extends LitElement {
   render() {
     return html`
       <div class="chat" @scroll=${this.onScroll}>
-        ${this.messages.map((message, index) => html`
+        ${this.groupedMessages().map((group) => group.kind === "message"
+          ? this.renderMessage(group.message, group.index)
+          : this.renderMessageGroup(group.messages, group.startIndex))}
+      </div>
+    `;
+  }
+
+  private renderMessage(message: ChatLine, index: number) {
+    return html`
       <article class="msg ${message.role}" data-index=${index}>
         <b class="label">${message.role}</b>
         ${message.parts.map((part) => this.renderPart(part))}
       </article>
+    `;
+  }
+
+  private renderMessageGroup(messages: ChatLine[], startIndex: number) {
+    return html`
+      <details class="msg event-group" data-index=${startIndex}>
+        <summary>
+          <b class="label">events</b>
+          <span>${this.groupSummary(messages)}</span>
+        </summary>
+        <div class="group-body">
+          ${messages.map((message) => html`
+            <section class="group-msg ${message.role}">
+              <b class="label">${message.role}</b>
+              ${message.parts.map((part) => this.renderPart(part))}
+            </section>
           `)}
         </div>
+      </details>
     `;
   }
 
+  private groupedMessages(): Array<{ kind: "message"; message: ChatLine; index: number } | { kind: "group"; messages: ChatLine[]; startIndex: number }> {
+    const groups: Array<{ kind: "message"; message: ChatLine; index: number } | { kind: "group"; messages: ChatLine[]; startIndex: number }> = [];
+    let eventMessages: ChatLine[] = [];
+    let eventStartIndex = 0;
+
+    const pushEvent = (message: ChatLine, index: number) => {
+      if (!eventMessages.length) eventStartIndex = index;
+      eventMessages.push(message);
+    };
+    const flushEvents = () => {
+      if (!eventMessages.length) return;
+      groups.push({ kind: "group", messages: eventMessages, startIndex: eventStartIndex });
+      eventMessages = [];
+    };
+
+    this.messages.forEach((message, index) => {
+      const readableParts = message.parts.filter((part) => this.isReadablePart(message, part));
+      const technicalParts = message.parts.filter((part) => !this.isReadablePart(message, part));
+
+      if (technicalParts.length) pushEvent({ role: message.role, parts: technicalParts }, index);
+      if (readableParts.length) {
+        flushEvents();
+        groups.push({ kind: "message", message: { role: message.role, parts: readableParts }, index });
+      }
+    });
+    flushEvents();
+    return groups;
+  }
+
+  private isReadablePart(message: ChatLine, part: ChatPart): boolean {
+    return part.type === "text" && (message.role === "user" || message.role === "assistant" || message.role === "system");
+  }
+
+  private groupSummary(messages: ChatLine[]): string {
+    const counts = messages.reduce<Record<string, number>>((acc, message) => {
+      acc[message.role] = (acc[message.role] ?? 0) + 1;
+      return acc;
+    }, {});
+    const details = Object.entries(counts).map(([role, count]) => `${count} ${role}`).join(" · ");
+    return `${messages.length} ${messages.length === 1 ? "event" : "events"}${details ? ` · ${details}` : ""}`;
+  }
+
   private renderPart(part: ChatPart) {
     if (part.type === "text") return html`<formatted-text class="part" .text=${part.text}></formatted-text>`;
     if (part.type === "thinking") return html`<details class="part"><summary>thinking</summary><formatted-text .text=${part.text}></formatted-text></details>`;
@@ -157,7 +224,7 @@ export class ChatView extends LitElement {
   }
 
   private articles(): HTMLElement[] {
-    return Array.from(this.renderRoot.querySelectorAll<HTMLElement>("article.msg"));
+    return Array.from(this.renderRoot.querySelectorAll<HTMLElement>("article.msg, details.msg"));
   }
 
   private withSuppressedScrollSave(callback: () => void) {

src/client/src/components/PromptEditor.ts

@@ -1,4 +1,4 @@
-import { LitElement, html } from "lit";
+import { LitElement, html, type PropertyValues } from "lit";
 import { customElement, property, query, state } from "lit/decorators.js";
 import { api, type FileSuggestion, type SlashCommand } from "../api";
 import { promptEditorStyles, type CompletionItem } from "./shared";
@@ -17,6 +17,15 @@ export class PromptEditor extends LitElement {
   @state() private selectedIndex = 0;
   private requestVersion = 0;
 
+  protected willUpdate(changed: PropertyValues<this>) {
+    if (!changed.has("sessionId")) return;
+    const previousSessionId = changed.get("sessionId") as string | undefined;
+    if (previousSessionId) saveDraft(previousSessionId, this.draft);
+    this.draft = this.sessionId ? loadDraft(this.sessionId) : "";
+    this.completions = [];
+    this.selectedIndex = 0;
+  }
+
   render() {
     return html`
       <footer>
@@ -42,6 +51,7 @@ export class PromptEditor extends LitElement {
 
   private updateDraft(value: string) {
     this.draft = value;
+    if (this.sessionId) saveDraft(this.sessionId, this.draft);
     void this.refreshCompletions();
   }
 
@@ -111,6 +121,7 @@ export class PromptEditor extends LitElement {
 
   private pick(item: CompletionItem) {
     this.draft = `${this.draft.slice(0, item.replaceFrom)}${item.insertText} ${this.draft.slice(item.replaceTo)}`;
+    if (this.sessionId) saveDraft(this.sessionId, this.draft);
     this.completions = [];
   }
 
@@ -118,9 +129,41 @@ export class PromptEditor extends LitElement {
     const text = this.draft.trim();
     if (!text || this.disabled) return;
     this.draft = "";
+    if (this.sessionId) clearDraft(this.sessionId);
     this.completions = [];
     this.onSend?.(text);
   }
 
   static styles = promptEditorStyles;
 }
+
+const draftStoragePrefix = "pi-web:prompt-draft:";
+
+function draftStorageKey(sessionId: string): string {
+  return `${draftStoragePrefix}${sessionId}`;
+}
+
+function loadDraft(sessionId: string): string {
+  try {
+    return localStorage.getItem(draftStorageKey(sessionId)) ?? "";
+  } catch {
+    return "";
+  }
+}
+
+function saveDraft(sessionId: string, draft: string): void {
+  try {
+    if (draft) localStorage.setItem(draftStorageKey(sessionId), draft);
+    else localStorage.removeItem(draftStorageKey(sessionId));
+  } catch {
+    // Ignore localStorage quota/privacy errors.
+  }
+}
+
+function clearDraft(sessionId: string): void {
+  try {
+    localStorage.removeItem(draftStorageKey(sessionId));
+  } catch {
+    // Ignore localStorage quota/privacy errors.
+  }
+}

src/client/src/components/StatusBar.ts

@@ -19,8 +19,10 @@ export class StatusBar extends LitElement {
     const active = state !== "idle" || this.activity?.phase === "active";
     const context = status.contextUsage;
     const contextText = context
-      ? `${context.percent == null ? "?" : context.percent.toFixed(1)}%/${formatTokenCount(context.contextWindow)}`
-      : "context ?";
+      ? context.percent == null
+        ? `context ${formatTokenCount(context.contextWindow)}`
+        : `${context.percent.toFixed(1)}%/${formatTokenCount(context.contextWindow)}`
+      : "context unknown";
     const tokens = status.tokens;
     return html`
       <div class="bar">

src/client/src/components/shared.ts

@@ -55,12 +55,19 @@ export const chatStyles = css`
   .msg.user { border-color: #2f81f7; background: #0d2847; }
   .msg.tool { border-color: #6e5200; background: #1f1a10; color: #d29922; }
   .msg.system { color: #ff7b72; }
+  .msg.event-group { padding: 0; border-color: #30363d; background: #0d1117; color: #8b949e; }
+  .msg.event-group > summary { display: flex; align-items: center; gap: 8px; padding: 8px 12px; color: #8b949e; }
+  .msg.event-group > summary .label { margin: 0; }
+  .group-body { padding: 0 12px 12px; }
+  .group-msg { padding: 10px 0; border-top: 1px solid #21262d; color: #e6edf3; }
+  .group-msg.tool { color: #d29922; }
+  .group-msg.system { color: #ff7b72; }
   .label { display: block; margin-bottom: 8px; color: #8b949e; font-size: 12px; text-transform: uppercase; }
   formatted-text.part { display: block; }
   .part + .part { margin-top: 10px; }
   .tool-line { color: #d29922; }
   .summary { color: #8b949e; margin-left: 6px; }
-  details { border-top: 1px solid #30363d; padding-top: 8px; }
+  .part:is(details) { border-top: 1px solid #30363d; padding-top: 8px; }
   summary { cursor: pointer; color: #8b949e; }
   pre { margin: 6px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; }
 `;

src/client/src/controllers/sessionController.ts

@@ -69,10 +69,11 @@ export class SessionController {
   async runCommand(text: string) {
     const session = this.getState().selectedSession;
     if (!session) return;
+    this.setState({ messages: [...this.getState().messages, textMessage("user", text)] });
     try {
       this.applyCommandResult(await api.runCommand(session.id, text));
     } catch (error) {
-      this.setState({ error: String(error) });
+      this.setState({ messages: [...this.getState().messages, textMessage("system", String(error))], error: String(error) });
     }
   }
 
@@ -112,9 +113,10 @@ export class SessionController {
     const message = result.type === "unsupported" ? result.message : result.message;
     if (message) this.setState({ messages: [...this.getState().messages, textMessage(result.type === "unsupported" ? "system" : "tool", message)] });
     if (result.type === "done" && result.session) {
+      const current = this.getState().selectedSession;
       const sessions = [result.session, ...this.getState().sessions.filter((session) => session.id !== result.session?.id)];
-      this.setState({ sessions });
-      void this.selectSession(result.session);
+      this.setState({ sessions, selectedSession: current?.id === result.session.id ? result.session : current });
+      if (current?.id !== result.session.id) void this.selectSession(result.session);
     }
   }
 
@@ -144,6 +146,8 @@ export class SessionController {
       this.applyStatus(event.status);
     } else if (event.type === "activity.update") {
       this.applyActivity(event.activity);
+    } else if (event.type === "command.output") {
+      this.setState({ messages: [...messages, textMessage(event.level === "error" ? "system" : "tool", event.message)] });
     } else if (event.type === "session.error") {
       this.setState({ messages: [...messages, textMessage("system", event.message)] });
     }

src/client/src/sessionSocket.ts

@@ -6,6 +6,7 @@ export type SessionUiEvent =
   | { type: "tool.end"; toolName: string; isError: boolean }
   | { type: "status.update"; status: SessionStatus }
   | { type: "activity.update"; activity: SessionActivity }
+  | { type: "command.output"; level: "info" | "success" | "error"; message: string }
   | { type: "session.error"; message: string };
 
 export class SessionSocket {
@@ -118,7 +119,7 @@ export class GlobalSessionSocket {
 }
 
 function isSessionUiEvent(event: any): event is SessionUiEvent {
-  return ["assistant.delta", "tool.start", "tool.end", "status.update", "activity.update", "session.error"].includes(event?.type);
+  return ["assistant.delta", "tool.start", "tool.end", "status.update", "activity.update", "command.output", "session.error"].includes(event?.type);
 }
 
 function isGlobalSessionEvent(event: unknown): event is Extract<SessionUiEvent, { type: "status.update" | "activity.update" }> {

src/server/sessions/sessionCommandService.ts

@@ -34,7 +34,7 @@ export class SessionCommandService {
     }
 
     if (name === "session") return { type: "done", message: formatSessionStats(session) };
-    if (name === "name") return this.nameSession(session, rest);
+    if (name === "name") return this.nameSession(active, rest);
     if (name === "compact") return this.compact(session, rest);
     if (name === "clone") return this.clone(active);
     if (name === "fork") return this.fork(active);
@@ -56,17 +56,27 @@ export class SessionCommandService {
     return { type: "unsupported", message: "Unsupported command response" };
   }
 
-  private nameSession(session: AgentSession, name: string): ClientCommandResult {
+  private nameSession(active: ActiveSession, name: string): ClientCommandResult {
     if (!name) return { type: "unsupported", message: "Usage: /name <session name>" };
-    session.setSessionName(name);
-    return { type: "done", message: `Session named ${name}` };
+    active.runtime.session.setSessionName(name);
+    return { type: "done", message: `Session named: ${name}`, session: clientSessionFromRuntime(active.runtime) };
   }
 
   private compact(session: AgentSession, instructions: string): ClientCommandResult {
-    void session.compact(instructions || undefined).catch((error) => {
-      this.events.publish(session.sessionId, { type: "session.error", message: error instanceof Error ? error.message : String(error) });
+    void session.compact(instructions || undefined)
+      .then((result) => {
+        this.events.publish(session.sessionId, {
+          type: "command.output",
+          level: "success",
+          message: formatCompactionResult(result),
         });
-    return { type: "done", message: "Compaction started" };
+      })
+      .catch((error) => {
+        const message = error instanceof Error ? error.message : String(error);
+        this.events.publish(session.sessionId, { type: "command.output", level: "error", message: `Compaction failed: ${message}` });
+        this.events.publish(session.sessionId, { type: "session.error", message });
+      });
+    return { type: "done", message: "Compaction started…" };
   }
 
   private async clone(active: ActiveSession): Promise<ClientCommandResult> {
@@ -122,6 +132,15 @@ function formatSessionStats(session: AgentSession): string {
   ].join("\n");
 }
 
+function formatCompactionResult(result: { summary: string; tokensBefore: number }): string {
+  return [
+    "Compaction complete.",
+    `Tokens before: ${result.tokensBefore}`,
+    "",
+    result.summary,
+  ].join("\n");
+}
+
 function truncate(text: string, maxLength: number): string {
   const singleLine = text.replace(/\s+/g, " ").trim();
   return singleLine.length <= maxLength ? singleLine : `${singleLine.slice(0, maxLength - 1)}…`;