v1.1: fix transfer freeze, session tabs, per-panel toolbars, status bar

Freeze root cause: TransfersService consumed transferUpdate through an effect
that both read and wrote the jobMap signal — the first progress message spun
the effect into an infinite re-run loop, pegging the webview thread while the
copy completed fine bun-side. Push messages now flow through plain callback
registries on RpcService (also stops signal coalescing from dropping progress
snapshots). Verified live: a 60MB boot-time self-test copy streamed progress
into the running UI and the post-completion panel refreshes arrived.

- Tabs: workspaces (left+right PanelState pair each) in PanelsService; tab bar
  replaces the header; sessions persist in background tabs; Cmd+T/Cmd+W/Ctrl+Tab;
  closing a tab disconnects its sessions; last tab can't close
- Per-panel toolbar (top, icon-only): direction-explicit copy (-> / <-),
  rename, new folder/file, chmod, delete; panel footers removed
- VSCode-style status bar: transfer summary (spinner/percent/queued/failures,
  click to expand the job list) + active panel info; function bar removed
- transfer details list is collapsible, auto-expands on failure

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

ui/src/app/app.html

@@ -1,19 +1,4 @@
 <div class="flex h-screen flex-col bg-background text-foreground">
-  <header class="flex items-center gap-2 border-b border-border px-3 py-1.5">
-    <ng-icon name="mynaArrowLeftRight" class="text-muted-foreground" size="0.9rem" />
-    <h1 class="text-[13px] font-semibold tracking-tight">{{ appName }}</h1>
-    <div class="flex-1"></div>
-    @if (rpc.available) {
-      <button
-        (click)="dialogs.manager.set(true)"
-        title="Manage connections"
-        class="grid size-6 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
-      >
-        <ng-icon name="mynaCog" size="0.95rem" />
-      </button>
-    }
-  </header>
-
   @if (!rpc.available) {
     <div class="flex flex-1 items-center justify-center">
       <div class="max-w-sm rounded-lg border border-border bg-card p-6 text-center shadow-sm">
@@ -25,58 +10,15 @@
       </div>
     </div>
   } @else {
+    <app-tab-bar />
+
     <main class="flex min-h-0 flex-1 divide-x divide-border">
       <app-file-panel side="left" />
       <app-file-panel side="right" />
     </main>
 
     <app-transfer-bar />
-
+    <app-status-bar />
-    <!-- function bar: acts on the active panel -->
-    <footer class="flex items-center gap-1 border-t border-border px-2 py-1">
-      <button
-        (click)="transfers.copyToOtherPanel()"
-        title="Copy to other panel (F5)"
-        class="flex items-center gap-1.5 rounded-md px-2 py-1 text-xs text-muted-foreground hover:bg-accent hover:text-foreground"
-      >
-        <ng-icon name="mynaArrowLeftRight" size="0.9rem" /> Copy
-      </button>
-      <button
-        (click)="actions.rename()"
-        title="Rename (F2)"
-        class="flex items-center gap-1.5 rounded-md px-2 py-1 text-xs text-muted-foreground hover:bg-accent hover:text-foreground"
-      >
-        <ng-icon name="mynaEdit" size="0.9rem" /> Rename
-      </button>
-      <button
-        (click)="actions.mkdir()"
-        title="New folder (F7)"
-        class="flex items-center gap-1.5 rounded-md px-2 py-1 text-xs text-muted-foreground hover:bg-accent hover:text-foreground"
-      >
-        <ng-icon name="mynaFolderPlus" size="0.9rem" /> Folder
-      </button>
-      <button
-        (click)="actions.createFile()"
-        title="New file"
-        class="flex items-center gap-1.5 rounded-md px-2 py-1 text-xs text-muted-foreground hover:bg-accent hover:text-foreground"
-      >
-        <ng-icon name="mynaFilePlus" size="0.9rem" /> File
-      </button>
-      <button
-        (click)="actions.chmod()"
-        title="Permissions"
-        class="flex items-center gap-1.5 rounded-md px-2 py-1 text-xs text-muted-foreground hover:bg-accent hover:text-foreground"
-      >
-        <ng-icon name="mynaLock" size="0.9rem" /> Permissions
-      </button>
-      <button
-        (click)="actions.delete()"
-        title="Delete (F8 / Del)"
-        class="flex items-center gap-1.5 rounded-md px-2 py-1 text-xs text-muted-foreground hover:bg-accent hover:text-destructive"
-      >
-        <ng-icon name="mynaTrash" size="0.9rem" /> Delete
-      </button>
-    </footer>
   }
 
   <!-- dialogs -->
@@ -94,7 +36,7 @@
   }
 
   <!-- toasts -->
-  <div class="pointer-events-none fixed right-3 bottom-3 z-50 flex w-80 flex-col gap-2">
+  <div class="pointer-events-none fixed right-3 bottom-8 z-50 flex w-80 flex-col gap-2">
     @for (t of toast.toasts(); track t.id) {
       <div
         class="pointer-events-auto flex items-start gap-2 rounded-lg border border-border bg-card p-3 text-xs text-card-foreground shadow-lg"

ui/src/app/app.ts

@@ -6,18 +6,21 @@ import { ChmodDialog } from './dialogs/chmod-dialog';
 import { ConfirmDialog } from './dialogs/confirm-dialog';
 import { PromptDialog } from './dialogs/prompt-dialog';
 import { DialogsService } from './dialogs.service';
-import { FileActionsService } from './file-actions.service';
 import { FilePanel } from './file-panel/file-panel';
+import { PanelsService } from './panels.service';
 import { RpcService } from './rpc.service';
+import { StatusBar } from './status-bar/status-bar';
+import { TabBar } from './tab-bar/tab-bar';
 import { ToastService } from './toast.service';
 import { TransferBar } from './transfer-bar/transfer-bar';
-import { TransfersService } from './transfers.service';
 
 @Component({
   selector: 'app-root',
   imports: [
     NgIcon,
     FilePanel,
+    TabBar,
+    StatusBar,
     PromptDialog,
     ConfirmDialog,
     ChmodDialog,
@@ -25,19 +28,33 @@ import { TransfersService } from './transfers.service';
     ConnectionManager,
   ],
   templateUrl: './app.html',
+  host: { '(window:keydown)': 'onWindowKeydown($event)' },
 })
 export class App {
-  readonly appName = BRANDING.appName;
   readonly rpc = inject(RpcService);
   readonly toast = inject(ToastService);
   readonly dialogs = inject(DialogsService);
-  readonly actions = inject(FileActionsService);
+  readonly panels = inject(PanelsService);
-  readonly transfers = inject(TransfersService);
 
   constructor() {
     document.title = BRANDING.appName;
   }
 
+  /** Tab (workspace) shortcuts — panel-level keys live on the panels themselves. */
+  onWindowKeydown(event: KeyboardEvent): void {
+    const mod = event.metaKey || event.ctrlKey;
+    if (mod && event.key.toLowerCase() === 't') {
+      event.preventDefault();
+      this.panels.newWorkspace();
+    } else if (mod && event.key.toLowerCase() === 'w') {
+      event.preventDefault();
+      this.panels.closeWorkspace(this.panels.activeWorkspaceId());
+    } else if (event.ctrlKey && event.key === 'Tab') {
+      event.preventDefault();
+      this.panels.cycleWorkspace(event.shiftKey ? -1 : 1);
+    }
+  }
+
   toastIcon(kind: 'error' | 'info' | 'success'): string {
     if (kind === 'error') return 'mynaXCircle';
     if (kind === 'success') return 'mynaCheckCircle';

ui/src/app/file-actions.service.ts

@@ -2,17 +2,16 @@ import { Injectable, inject } from '@angular/core';
 import type { FileEntry } from '@shared/types';
 import { DialogsService } from './dialogs.service';
 import { joinPath } from './format';
-import { PanelsService, type PanelState } from './panels.service';
+import { type PanelState } from './panels.service';
 import { RpcService } from './rpc.service';
 import { ToastService } from './toast.service';
 
 /**
- * File operations invoked from the function bar / keyboard. They always act on
+ * File operations invoked from a panel's toolbar / keyboard. They act on the
- * the ACTIVE panel: on the selection if there is one, else on the cursor row.
+ * GIVEN panel: on the selection if there is one, else on the cursor row.
  */
 @Injectable({ providedIn: 'root' })
 export class FileActionsService {
-  private readonly panels = inject(PanelsService);
   private readonly rpc = inject(RpcService);
   private readonly toast = inject(ToastService);
   private readonly dialogs = inject(DialogsService);
@@ -25,8 +24,7 @@ export class FileActionsService {
     return atCursor ? [atCursor] : [];
   }
 
-  mkdir(): void {
+  mkdir(panel: PanelState): void {
-    const panel = this.panels.active();
     this.dialogs.prompt.set({
       title: 'New folder',
       placeholder: 'folder name',
@@ -42,8 +40,7 @@ export class FileActionsService {
     });
   }
 
-  createFile(): void {
+  createFile(panel: PanelState): void {
-    const panel = this.panels.active();
     this.dialogs.prompt.set({
       title: 'New file',
       placeholder: 'file name',
@@ -59,8 +56,7 @@ export class FileActionsService {
     });
   }
 
-  rename(): void {
+  rename(panel: PanelState): void {
-    const panel = this.panels.active();
     const entry = panel.sorted()[panel.cursor()];
     if (!entry) return;
     this.dialogs.prompt.set({
@@ -80,8 +76,7 @@ export class FileActionsService {
     });
   }
 
-  delete(): void {
+  delete(panel: PanelState): void {
-    const panel = this.panels.active();
     const targets = this.targets(panel);
     if (!targets.length) return;
     const what =
@@ -102,8 +97,7 @@ export class FileActionsService {
     });
   }
 
-  chmod(): void {
+  chmod(panel: PanelState): void {
-    const panel = this.panels.active();
     const targets = this.targets(panel);
     if (!targets.length) return;
     this.dialogs.chmod.set({

ui/src/app/file-panel/file-panel.html

@@ -1,5 +1,5 @@
 <!-- session strip -->
-<div class="relative flex items-center gap-1.5 border-b border-border px-2 py-1.5">
+<div class="relative flex items-center gap-1.5 border-b border-border px-2 py-1">
   <button
     (click)="menuOpen.set(!menuOpen())"
     class="flex min-w-0 items-center gap-1.5 rounded-md px-2 py-1 text-xs font-medium hover:bg-accent"
@@ -27,6 +27,52 @@
     </button>
   }
 
+  <div class="flex-1"></div>
+
+  <!-- panel actions: act on THIS panel -->
+  <button
+    (click)="copyToOther()"
+    [title]="side() === 'left' ? 'Copy to right panel (F5)' : 'Copy to left panel (F5)'"
+    class="grid size-6 shrink-0 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-primary"
+  >
+    <ng-icon [name]="copyIcon()" size="0.95rem" />
+  </button>
+  <button
+    (click)="run('rename')"
+    title="Rename (F2)"
+    class="grid size-6 shrink-0 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
+  >
+    <ng-icon name="mynaEdit" size="0.9rem" />
+  </button>
+  <button
+    (click)="run('mkdir')"
+    title="New folder (F7)"
+    class="grid size-6 shrink-0 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
+  >
+    <ng-icon name="mynaFolderPlus" size="0.9rem" />
+  </button>
+  <button
+    (click)="run('createFile')"
+    title="New file"
+    class="grid size-6 shrink-0 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
+  >
+    <ng-icon name="mynaFilePlus" size="0.9rem" />
+  </button>
+  <button
+    (click)="run('chmod')"
+    title="Permissions"
+    class="grid size-6 shrink-0 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
+  >
+    <ng-icon name="mynaLock" size="0.9rem" />
+  </button>
+  <button
+    (click)="run('delete')"
+    title="Delete (F8 / Del)"
+    class="grid size-6 shrink-0 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-destructive"
+  >
+    <ng-icon name="mynaTrash" size="0.9rem" />
+  </button>
+
   @if (menuOpen()) {
     <div class="fixed inset-0 z-20" (click)="menuOpen.set(false)"></div>
     <div
@@ -135,7 +181,6 @@
   (keydown)="onKeydown($event)"
   (mousedown)="activate()"
   class="flex-1 overflow-y-auto outline-none"
-  [class.bg-accent]="false"
 >
   @for (entry of panel().sorted(); track entry.name; let i = $index) {
     <div
@@ -168,11 +213,3 @@
     <div class="p-6 text-center text-xs text-muted-foreground">Empty directory</div>
   }
 </div>
-
-<!-- footer -->
-<div class="flex items-center gap-2 border-t border-border px-2 py-1 text-[11px] text-muted-foreground">
-  <span>{{ panel().sorted().length }} items</span>
-  @if (panel().selected().size; as count) {
-    <span>· {{ count }} selected</span>
-  }
-</div>

ui/src/app/file-panel/file-panel.ts

@@ -34,6 +34,8 @@ export class FilePanel {
   readonly panel = computed(() => this.panels.get(this.side()));
   readonly isActive = computed(() => this.panels.activeSide() === this.side());
   readonly isRemote = computed(() => this.panel().sessionId() !== 'local');
+  /** The copy button points toward the other panel. */
+  readonly copyIcon = computed(() => (this.side() === 'left' ? 'mynaArrowRight' : 'mynaArrowLeft'));
 
   readonly pathDraft = signal('');
   readonly menuOpen = signal(false);
@@ -55,7 +57,17 @@ export class FilePanel {
   }
 
   activate(): void {
-    this.panels.activeSide.set(this.side());
+    this.panels.setActiveSide(this.side());
+  }
+
+  copyToOther(): void {
+    this.activate();
+    void this.transfers.copyToOtherPanel(this.side());
+  }
+
+  run(action: 'rename' | 'mkdir' | 'createFile' | 'chmod' | 'delete'): void {
+    this.activate();
+    this.actions[action](this.panel());
   }
 
   pickLocal(): void {
@@ -129,7 +141,7 @@ export class FilePanel {
 
     if (key === 'Tab') {
       event.preventDefault();
-      this.panels.activeSide.set(this.panels.otherSide(this.side()));
+      this.panels.setActiveSide(this.panels.otherSide(this.side()));
       return;
     }
     if ((event.metaKey || event.ctrlKey) && key.toLowerCase() === 'a') {
@@ -171,17 +183,17 @@ export class FilePanel {
         panel.up();
         break;
       case 'F2':
-        this.actions.rename();
+        this.actions.rename(panel);
         break;
       case 'F5':
-        void this.transfers.copyToOtherPanel();
+        void this.transfers.copyToOtherPanel(this.side());
         break;
       case 'F7':
-        this.actions.mkdir();
+        this.actions.mkdir(panel);
         break;
       case 'F8':
       case 'Delete':
-        this.actions.delete();
+        this.actions.delete(panel);
         break;
       default:
         return; // let unhandled keys through

ui/src/app/icons.ts

@@ -2,7 +2,9 @@
 // NOTE: @ng-icons/mynaui's package root is empty — always import from /outline
 // (or /solid, where names get a `Solid` suffix).
 import {
+  mynaArrowLeft,
   mynaArrowLeftRight,
+  mynaArrowRight,
   mynaArrowUp,
   mynaCheck,
   mynaCheckCircle,
@@ -27,7 +29,9 @@ import {
 } from "@ng-icons/mynaui/outline";
 
 export const APP_ICONS = {
+  mynaArrowLeft,
   mynaArrowLeftRight,
+  mynaArrowRight,
   mynaArrowUp,
   mynaCheck,
   mynaCheckCircle,

ui/src/app/panels.service.ts

@@ -1,4 +1,4 @@
-import { Injectable, computed, effect, signal } from '@angular/core';
+import { Injectable, computed, signal, type WritableSignal } from '@angular/core';
 import type { ConnectionConfig, FileEntry } from '@shared/types';
 import { RpcService } from './rpc.service';
 import { ToastService } from './toast.service';
@@ -145,43 +145,157 @@ export class PanelState {
   }
 }
 
+/** One tab: an independent left/right panel pair. */
+export interface Workspace {
+  id: number;
+  left: PanelState;
+  right: PanelState;
+  activeSide: WritableSignal<Side>;
+}
+
 @Injectable({ providedIn: 'root' })
 export class PanelsService {
-  readonly left: PanelState;
+  readonly workspaces = signal<Workspace[]>([]);
-  readonly right: PanelState;
+  readonly activeWorkspaceId = signal(0);
-  readonly activeSide = signal<Side>('left');
+  readonly activeWorkspace = computed(() => {
+    const list = this.workspaces();
+    return list.find((w) => w.id === this.activeWorkspaceId()) ?? list[0];
+  });
   /** Bumped to tell the active panel to grab keyboard focus again (e.g. after a dialog closes). */
   readonly focusTick = signal(0);
 
+  private nextWorkspaceId = 1;
+
   constructor(
     private rpc: RpcService,
     private toast: ToastService,
   ) {
-    const deps = { rpc, toast };
+    this.newWorkspace();
-    this.left = new PanelState(deps);
-    this.right = new PanelState(deps);
-    if (rpc.available) {
-      // this service is first injected during template rendering, where signal
-      // writes (load -> loading.set) are forbidden — defer past the render pass
-      queueMicrotask(() => {
-        void this.left.load(null);
-        void this.right.load(null);
-      });
-    }
 
-    // a session died on its own — fall the affected panel(s) back to local
+    // a session died on its own — reset every panel bound to it, in any tab
-    effect(() => {
+    this.rpc.onSessionClosed((event) => {
-      const event = this.rpc.sessionClosed();
+      for (const workspace of this.workspaces()) {
-      if (!event) return;
+        for (const panel of [workspace.left, workspace.right]) {
-      for (const panel of [this.left, this.right]) {
+          if (panel.sessionId() === event.sessionId) {
-        if (panel.sessionId() === event.sessionId) {
+            this.toast.error(`${panel.title()}: disconnected (${event.reason})`);
-          this.toast.error(`${panel.title()}: disconnected (${event.reason})`);
+            this.resetToLocal(panel);
-          this.resetToLocal(panel);
+          }
         }
       }
     });
   }
 
+  // ---- panels of the active workspace ----
+
+  get(side: Side): PanelState {
+    const workspace = this.activeWorkspace();
+    return side === 'left' ? workspace.left : workspace.right;
+  }
+
+  activeSide(): Side {
+    return this.activeWorkspace().activeSide();
+  }
+
+  setActiveSide(side: Side): void {
+    this.activeWorkspace().activeSide.set(side);
+  }
+
+  active(): PanelState {
+    return this.get(this.activeSide());
+  }
+
+  otherSide(side: Side): Side {
+    return side === 'left' ? 'right' : 'left';
+  }
+
+  other(side: Side): PanelState {
+    return this.get(this.otherSide(side));
+  }
+
+  /** Every panel across every workspace (for session-wide updates). */
+  allPanels(): PanelState[] {
+    return this.workspaces().flatMap((w) => [w.left, w.right]);
+  }
+
+  refocus(): void {
+    this.focusTick.update((n) => n + 1);
+  }
+
+  // ---- workspace (tab) management ----
+
+  newWorkspace(): void {
+    const deps = { rpc: this.rpc, toast: this.toast };
+    const workspace: Workspace = {
+      id: this.nextWorkspaceId++,
+      left: new PanelState(deps),
+      right: new PanelState(deps),
+      activeSide: signal<Side>('left'),
+    };
+    this.workspaces.update((list) => [...list, workspace]);
+    this.activeWorkspaceId.set(workspace.id);
+    if (this.rpc.available) {
+      // may be called during template rendering, where signal writes inside
+      // load() are forbidden — defer past the render pass
+      queueMicrotask(() => {
+        void workspace.left.load(null);
+        void workspace.right.load(null);
+      });
+    }
+    this.refocus();
+  }
+
+  /** Close a tab; its remote sessions are disconnected. The last tab stays. */
+  closeWorkspace(id: number): void {
+    const list = this.workspaces();
+    if (list.length <= 1) return;
+    const index = list.findIndex((w) => w.id === id);
+    if (index < 0) return;
+    const workspace = list[index];
+
+    for (const panel of [workspace.left, workspace.right]) {
+      const sessionId = panel.sessionId();
+      if (sessionId !== 'local') {
+        void this.rpc.request.disconnect({ sessionId });
+      }
+    }
+
+    this.workspaces.update((l) => l.filter((w) => w.id !== id));
+    if (this.activeWorkspaceId() === id) {
+      const neighbor = list[index + 1] ?? list[index - 1];
+      this.activeWorkspaceId.set(neighbor.id);
+    }
+    this.refocus();
+  }
+
+  setActiveWorkspace(id: number): void {
+    if (this.activeWorkspaceId() !== id) {
+      this.activeWorkspaceId.set(id);
+      this.refocus();
+    }
+  }
+
+  cycleWorkspace(delta: 1 | -1): void {
+    const list = this.workspaces();
+    if (list.length < 2) return;
+    const index = list.findIndex((w) => w.id === this.activeWorkspaceId());
+    const next = list[(index + delta + list.length) % list.length];
+    this.setActiveWorkspace(next.id);
+  }
+
+  /** Tab label: "Local" for a local/local pair, else the remote titles. */
+  workspaceName(workspace: Workspace): string {
+    const remoteTitles = [workspace.left, workspace.right]
+      .filter((p) => p.sessionId() !== 'local')
+      .map((p) => p.title());
+    return remoteTitles.length ? remoteTitles.join(' ⇄ ') : 'Local';
+  }
+
+  workspaceIsRemote(workspace: Workspace): boolean {
+    return workspace.left.sessionId() !== 'local' || workspace.right.sessionId() !== 'local';
+  }
+
+  // ---- session binding ----
+
   /** Connect a panel to a server; replaces (and disconnects) its previous remote session. */
   async connectPanel(side: Side, config: ConnectionConfig, title: string): Promise<boolean> {
     const panel = this.get(side);
@@ -218,24 +332,4 @@ export class PanelsService {
     panel.title.set('Local');
     void panel.load(null);
   }
-
-  get(side: Side): PanelState {
-    return side === 'left' ? this.left : this.right;
-  }
-
-  active(): PanelState {
-    return this.get(this.activeSide());
-  }
-
-  otherSide(side: Side): Side {
-    return side === 'left' ? 'right' : 'left';
-  }
-
-  other(side: Side): PanelState {
-    return this.get(this.otherSide(side));
-  }
-
-  refocus(): void {
-    this.focusTick.update((n) => n + 1);
-  }
 }

ui/src/app/rpc.service.ts

@@ -1,4 +1,4 @@
-import { Injectable, signal } from '@angular/core';
+import { Injectable } from '@angular/core';
 import { Electroview } from 'electrobun/view';
 import type { AppRPC } from '@shared/rpc';
 import type { TransferSnapshot } from '@shared/types';
@@ -13,8 +13,11 @@ export class RpcService {
   /** False when the page is opened in a plain browser instead of the app. */
   readonly available: boolean;
 
-  readonly transferUpdate = signal<TransferSnapshot | null>(null);
+  // Push messages are delivered through plain callbacks, NOT signals: a signal
-  readonly sessionClosed = signal<SessionClosedEvent | null>(null);
+  // consumed from an effect that also writes signals re-triggers itself
+  // (this froze the app), and signal coalescing would drop progress snapshots.
+  private transferListeners = new Set<(s: TransferSnapshot) => void>();
+  private closedListeners = new Set<(e: SessionClosedEvent) => void>();
 
   private rpc: ReturnType<typeof Electroview.defineRPC<AppRPC>> | undefined;
   private ready: Promise<void> = Promise.resolve();
@@ -27,8 +30,12 @@ export class RpcService {
       maxRequestTime: MAX_REQUEST_TIME_MS,
       handlers: {
         messages: {
-          transferUpdate: (snapshot) => this.transferUpdate.set(snapshot),
+          transferUpdate: (snapshot) => {
-          sessionClosed: (event) => this.sessionClosed.set(event),
+            for (const listener of this.transferListeners) listener(snapshot);
+          },
+          sessionClosed: (event) => {
+            for (const listener of this.closedListeners) listener(event);
+          },
         },
       },
     });
@@ -43,7 +50,14 @@ export class RpcService {
         socket.addEventListener('error', () => resolve(), { once: true });
       });
     }
+  }
 
+  onTransferUpdate(listener: (snapshot: TransferSnapshot) => void): void {
+    this.transferListeners.add(listener);
+  }
+
+  onSessionClosed(listener: (event: SessionClosedEvent) => void): void {
+    this.closedListeners.add(listener);
   }
 
   /** Typed request proxy: `await rpc.request.listDir({...})`. Waits for the bridge. */

ui/src/app/status-bar/status-bar.ts

@@ -0,0 +1,66 @@
+import { Component, computed, inject } from '@angular/core';
+import { NgIcon } from '@ng-icons/core';
+import type { TransferSnapshot } from '@shared/types';
+import { PanelsService } from '../panels.service';
+import { TransfersService } from '../transfers.service';
+
+@Component({
+  selector: 'app-status-bar',
+  imports: [NgIcon],
+  template: `
+    <div
+      class="flex h-6 items-center justify-between gap-4 border-t border-border px-3 text-[11px] text-muted-foreground select-none"
+    >
+      <!-- transfers summary; click toggles the detailed list -->
+      <button
+        (click)="transfers.expanded.set(!transfers.expanded())"
+        class="flex min-w-0 items-center gap-1.5 hover:text-foreground"
+        title="Show transfer details"
+      >
+        @if (transfers.currentJob(); as job) {
+          <ng-icon name="mynaSpinner" size="0.8rem" class="shrink-0 animate-spin text-primary" />
+          <span class="truncate">
+            Copying {{ job.name }} · {{ percent(job) }}%
+            @if (transfers.queuedCount(); as queued) {
+              · {{ queued }} queued
+            }
+          </span>
+        } @else if (transfers.failedJobs().length; as failed) {
+          <ng-icon name="mynaXCircle" size="0.8rem" class="shrink-0 text-destructive" />
+          <span class="text-destructive">
+            {{ failed }} transfer{{ failed === 1 ? '' : 's' }} failed
+          </span>
+        } @else if (transfers.hasJobs()) {
+          <ng-icon name="mynaCheckCircle" size="0.8rem" class="shrink-0 text-success" />
+          <span>Transfers finished</span>
+        } @else {
+          <span>Ready</span>
+        }
+      </button>
+
+      <!-- active panel info -->
+      <div class="flex shrink-0 items-center gap-1.5">
+        <ng-icon
+          [name]="activePanel().sessionId() === 'local' ? 'mynaHardDrive' : 'mynaServers'"
+          size="0.8rem"
+          [class.text-primary]="activePanel().sessionId() !== 'local'"
+        />
+        <span class="max-w-56 truncate">{{ activePanel().title() }}</span>
+        <span>· {{ activePanel().sorted().length }} items</span>
+        @if (activePanel().selected().size; as count) {
+          <span>· {{ count }} selected</span>
+        }
+      </div>
+    </div>
+  `,
+})
+export class StatusBar {
+  readonly transfers = inject(TransfersService);
+  readonly panels = inject(PanelsService);
+  readonly activePanel = computed(() => this.panels.get(this.panels.activeSide()));
+
+  percent(job: TransferSnapshot): number {
+    if (!job.totalBytes) return 0;
+    return Math.min(100, Math.round((job.doneBytes / job.totalBytes) * 100));
+  }
+}

ui/src/app/tab-bar/tab-bar.ts

@@ -0,0 +1,63 @@
+import { Component, inject } from '@angular/core';
+import { NgIcon } from '@ng-icons/core';
+import { PanelsService } from '../panels.service';
+
+@Component({
+  selector: 'app-tab-bar',
+  imports: [NgIcon],
+  template: `
+    <div class="flex items-center gap-0.5 border-b border-border px-1.5 pt-1">
+      @for (ws of panels.workspaces(); track ws.id) {
+        <div
+          class="group relative flex max-w-52 items-center rounded-t-md"
+          [class.bg-accent]="ws.id === panels.activeWorkspaceId()"
+        >
+          <button
+            (click)="panels.setActiveWorkspace(ws.id)"
+            class="flex min-w-0 items-center gap-1.5 py-1.5 pr-1 pl-2.5 text-xs"
+            [class.text-foreground]="ws.id === panels.activeWorkspaceId()"
+            [class.text-muted-foreground]="ws.id !== panels.activeWorkspaceId()"
+            [title]="panels.workspaceName(ws)"
+          >
+            <ng-icon
+              [name]="panels.workspaceIsRemote(ws) ? 'mynaServers' : 'mynaHardDrive'"
+              size="0.85rem"
+              class="shrink-0"
+              [class.text-primary]="panels.workspaceIsRemote(ws)"
+            />
+            <span class="truncate">{{ panels.workspaceName(ws) }}</span>
+          </button>
+          @if (panels.workspaces().length > 1) {
+            <button
+              (click)="close($event, ws.id)"
+              title="Close tab (⌘W)"
+              class="mr-1 grid size-4 shrink-0 place-items-center rounded text-muted-foreground opacity-0 group-hover:opacity-100 hover:bg-border hover:text-foreground"
+            >
+              <ng-icon name="mynaX" size="0.7rem" />
+            </button>
+          } @else {
+            <span class="mr-1 size-4 shrink-0"></span>
+          }
+          @if (ws.id === panels.activeWorkspaceId()) {
+            <div class="absolute inset-x-0 -bottom-px h-0.5 rounded-full bg-primary"></div>
+          }
+        </div>
+      }
+      <button
+        (click)="panels.newWorkspace()"
+        title="New tab (⌘T)"
+        class="ml-0.5 grid size-6 place-items-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground"
+      >
+        <ng-icon name="mynaPlus" size="0.9rem" />
+      </button>
+    </div>
+  `,
+})
+export class TabBar {
+  readonly panels = inject(PanelsService);
+
+  close(event: MouseEvent, id: number): void {
+    event.stopPropagation();
+    this.panels.closeWorkspace(id);
+  }
+}

ui/src/app/transfer-bar/transfer-bar.html

@@ -1,4 +1,4 @@
-@if (transfers.hasJobs()) {
+@if (transfers.expanded() && transfers.hasJobs()) {
   <div class="max-h-40 overflow-y-auto border-t border-border">
     @for (job of transfers.jobs(); track job.id) {
       <div class="flex items-center gap-2 px-3 py-1.5 text-xs">

ui/src/app/transfers.service.ts

@@ -1,10 +1,11 @@
-import { Injectable, computed, effect, inject, signal } from '@angular/core';
+import { Injectable, computed, inject, signal } from '@angular/core';
 import type { TransferSnapshot } from '@shared/types';
-import { PanelsService } from './panels.service';
+import { PanelsService, type Side } from './panels.service';
 import { RpcService } from './rpc.service';
 import { ToastService } from './toast.service';
 
 const AUTO_DISMISS_COMPLETED_MS = 5000;
+const ACTIVE_STATES = ['queued', 'scanning', 'running'];
 
 @Injectable({ providedIn: 'root' })
 export class TransfersService {
@@ -15,19 +16,26 @@ export class TransfersService {
   private readonly jobMap = signal<ReadonlyMap<string, TransferSnapshot>>(new Map());
   readonly jobs = computed(() => [...this.jobMap().values()]);
   readonly hasJobs = computed(() => this.jobMap().size > 0);
+  readonly activeJobs = computed(() => this.jobs().filter((j) => ACTIVE_STATES.includes(j.state)));
+  readonly currentJob = computed(
+    () => this.jobs().find((j) => j.state === 'running' || j.state === 'scanning') ?? null,
+  );
+  readonly queuedCount = computed(() => this.jobs().filter((j) => j.state === 'queued').length);
+  readonly failedJobs = computed(() => this.jobs().filter((j) => j.state === 'failed'));
+
+  /** Whether the detailed per-job list is shown (toggled from the status bar). */
+  readonly expanded = signal(false);
 
   constructor() {
-    effect(() => {
+    if (this.rpc.available) {
-      const snapshot = this.rpc.transferUpdate();
+      this.rpc.onTransferUpdate((snapshot) => this.apply(snapshot));
-      if (snapshot) this.apply(snapshot);
+    }
-    });
   }
 
-  /** Copy the active panel's targets into the other panel's cwd (the F5 action). */
+  /** Copy the given panel's targets into the other panel's cwd (F5 / toolbar). */
-  async copyToOtherPanel(): Promise<void> {
+  async copyToOtherPanel(fromSide: Side): Promise<void> {
-    const side = this.panels.activeSide();
+    const src = this.panels.get(fromSide);
-    const src = this.panels.get(side);
+    const dst = this.panels.other(fromSide);
-    const dst = this.panels.other(side);
 
     const selected = src.selectedEntries();
     const atCursor = src.sorted()[src.cursor()];
@@ -76,6 +84,7 @@ export class TransfersService {
       this.refreshPanelsOn(snapshot.dstSessionId);
       setTimeout(() => void this.dismiss(snapshot.id), AUTO_DISMISS_COMPLETED_MS);
     } else if (snapshot.state === 'failed') {
+      this.expanded.set(true);
       this.toast.error(`Transfer "${snapshot.name}" failed: ${snapshot.error ?? 'unknown error'}`);
       this.refreshPanelsOn(snapshot.dstSessionId);
     } else if (snapshot.state === 'cancelled') {
@@ -84,7 +93,7 @@ export class TransfersService {
   }
 
   private refreshPanelsOn(sessionId: string): void {
-    for (const panel of [this.panels.left, this.panels.right]) {
+    for (const panel of this.panels.allPanels()) {
       if (panel.sessionId() === sessionId) void panel.refresh();
     }
   }