chore: v2.8.58 — Preview tab in the session panel

The session panel's header becomes two tabs, Changes and Preview. Preview
shows a web page by address (Reload, Open in a browser tab, the workspace's
ports as chips, last address per workspace) in an iframe on the page's own
origin: http(s) only, no userinfo, never the dashboard's origin, no top
navigation. One rule for every link (lib/openInPreview.ts): a chat or
terminal link to localhost/127.0.0.1/0.0.0.0/[::1] opens in Preview while a
session panel answers and the dashboard is on loopback; anything else, or a
Ctrl/Cmd click, opens a browser tab as before.

CLAUDE.md

@@ -1,6 +1,6 @@
 # Claude Code Working Guide
 
-_Last synced: v2.8.53 (2026-11-02) — chat + menu opens downward when there is no room above._ A change that makes any statement in this file, `AGENTS.md`, or a README wrong — a moved path, a new or changed extension point, a retired rule — updates that file in the same change-set and bumps this marker. **Bump = replace the version/date and a ≤ 1-line summary; never append a changelog here** — details belong in the commit message and `docs/`, because this whole file is loaded into every session.
+_Last synced: v2.8.58 (2026-11-02) — the session panel gains a Preview tab; local links open there._ A change that makes any statement in this file, `AGENTS.md`, or a README wrong — a moved path, a new or changed extension point, a retired rule — updates that file in the same change-set and bumps this marker. **Bump = replace the version/date and a ≤ 1-line summary; never append a changelog here** — details belong in the commit message and `docs/`, because this whole file is loaded into every session.
 
 ## Project mission
 - Maintain a reliable local-first dashboard for Claude Code session monitoring.
@@ -65,6 +65,7 @@ A **workspace** — called a **lane** in the API, CLI, database and code, which
 - **A workspace's sessions are the ones it OWNS, never the ones that ran in its folder.** `sessions.lane_id` is stamped by `bindRunSession` (`server/routes/hooks.js`) for the session a dashboard pane holds — first writer wins, a nested `claude -p` excluded — and no route sets it. A Codex/Antigravity session (their hooks are opt-in, so a pane may never learn its session) is also stamped by `claimToolSessions` (`server/lib/dashboard-runs.js`, called by both pollers and once at start): the lane of the newest same-tool dashboard run in the session's folder that was live when the session started, never a Claude session. A new Claude pane is started with `--session-id <uuid>` (`spawnRun`), so its `dashboard_runs.session_id` is known before any hook and a hook that carries no `run_id` (a hook handler older than `AGENTHUB_RUN_ID` forwarding) is still stamped from that run (`laneForSession`). Every workspace session list reads `GET /api/sessions?lane=<id>` — which also counts a still-unstamped session one of the lane's `dashboard_runs` holds, because hooks reach only the lowest-port dashboard on a shared DB and that one may be an older build that never stamps — and shows nothing else (no "other sessions in this folder"). Do not go back to listing a workspace by `cwd`, and do not guess ownership for old history. Billing has one more owner: a session NO workspace owns belongs to the user of the Linux account it ran as (`sessions.account` — the hook's peer, else its folder; `server/lib/session-account.js`, the host's account → the admin marked `users.host_account`, else the only admin), so a script's `claude -p` counts in Today, the Users page and spend quotas — a workspace's ownership always wins over it.
 - **A session's worktree is `claude --worktree`'s, resolved from the session row — and removing it never forces.** A Worktree start passes `--worktree=<server-made name>` (the `=` form: `-w [name]` eats the prompt otherwise) and Claude Code makes, populates and cleans up `<repo>/.claude/worktrees/<name>`; AgentHub only excludes `/.claude/worktrees/` at the repo root. A git route, a resume or a removal may work in a session's worktree only through `sessionWorktree` (`server/lib/session-worktree.js`: the session owned by the lane, its cwd not the lane's folder, registered by `git worktree list`) — `?session=` on the git routes answers `ENOWORKTREE` rather than falling back to the main folder. `POST /api/lanes/:id/session-worktree/remove` (same-origin, `confirm: true`, refused while a live pane holds the session) is the ONE dashboard path that deletes a worktree: `git worktree remove` with no `--force`, `git branch -d` never `-D`, a live-pid lock refused. Do not add a force, and do not let it touch a lane's own folder.
 - **Opening a session never resumes it — only SENDING a message to it does.** The sidebar and a workspace home ATTACH pane 0 to a session's live tmux pane (`/workspace?lane=<id>&run=<runId>`, `attachRequest` on `LaneConsolePane`) or, for an ended one, open it in its workspace like Claude Desktop (`/workspace?lane=<id>&session=<id>`, `client/src/components/lanes/SessionReplay.tsx`: its conversation read-only plus a prompt box; the console is only hidden, CSS). A resume re-reads the whole transcript into context, so it happens only on an explicit action: a message SENT from that replay (`resumeSessionId` + `prompt`, first free slot), the transcript page's **Resume**/**Fork** (`SessionResumeButton.tsx`, behind a warning), or the ticked sessions of the **Resume interrupted sessions?** dialog (`InterruptedSessionsPrompt.tsx`, `GET /api/run/interrupted` — runs whose pane died under them; opening it resumes nothing). The analysis page `/sessions/<id>` is reached from the session view's **Analyst** button (beside Files/Changes in the right panel). Do not add a path that resumes on a click. A resume is refused while a live pane holds the session (`409 ESESSIONLIVE` with that pane's `run_id`) — open that pane instead; a fork makes a new session and is allowed.
+- **A web page is previewed by URL in the session panel's Preview tab, never on the dashboard's origin, and every link follows ONE rule.** `client/src/components/lanes/UrlPreview.tsx` shows an `<iframe src>` whose sandbox has no `allow-top-navigation*`; `normalizePreviewUrl` (`client/src/lib/openInPreview.ts`) takes http(s) only, no userinfo, and refuses the dashboard's own origin (with `allow-same-origin` that frame would BE the dashboard). A chat link, bare URL or terminal link to `localhost`/`127.0.0.1`/`0.0.0.0`/`[::1]` opens there only while a session panel answers the event and the dashboard itself is on loopback; anything else — and any Ctrl/Cmd click — opens a browser tab. Do not add a second preview surface or a per-place button, and do not proxy a page through the dashboard's origin.
 - **A chat artifact runs in its own sandbox, never on the dashboard's origin.** The artifact panel (`client/src/components/run/ChatFilePreview.tsx`, `client/src/lib/artifactView.ts`) runs model-written HTML/Mermaid/React in an `<iframe srcdoc sandbox="allow-scripts …">` and an SVG in `sandbox=""` — never add `allow-same-origin` (the script would read the dashboard's cookies and call its API as the user), never render one with `dangerouslySetInnerHTML`, and keep its CDN libraries pinned to exact versions. An HTML FILE opened from the Changes panel, a Chat file preview or the File Explorer runs in the same sandbox (`client/src/components/HtmlFrame.tsx`, shown in a modal — `HtmlViewerModal.tsx`, Chat's `FilePreview modal`); its relative CSS/scripts/images are fetched by the DASHBOARD through the existing download routes and inlined (`client/src/lib/htmlInline.ts`) — never add a route that serves a folder to the frame without the login cookie. Versions are rebuilt from Write/Edit inputs (kept up to 256 KB by `server/lib/transcript-message.js`); no copy is stored, and Save to Artifacts uses the Hub's own `pinFile`/upload routes.
 - **A `cwd` can back at most one lane per tool, not one lane overall.** Uniqueness is the composite `idx_lanes_cwd_tool` (`cwd`, `tool`), not `cwd` alone — Repo/Adopt mode (`POST /api/lanes/ensure`) lets the same directory carry a `claude` lane and a `codex` lane side by side, shown as two separate cards. `resolveLaneByCwd(cwd, tool)` takes an optional `tool` filter for exactly this; hook ingestion (`touchLaneFromHook`) pins it to the hook's own tool — `claude`, `codex` for a hook posted with `tool: "codex"`, or `antigravity` for one posted with `tool: "antigravity"` (the Codex and Antigravity hook rules above) — so a hook event never touches the other tool's lane sharing the path, and stage detection (`resolveLaneForWork` + `detect`) runs for `claude` only. Worktree mode is unaffected — it already allocates a unique directory per lane.
 

client/src/components/conversation/MarkdownContent.tsx

@@ -63,6 +63,7 @@
 
 import React from "react";
 import { CodeBlock } from "./CodeBlock";
+import { onLinkClick } from "../../lib/openInPreview";
 
 type Block =
   | { kind: "code"; lang: string; code: string }
@@ -305,7 +306,13 @@ const LABEL_CLASS = (word: string) =>
 
 function UrlLink({ url }: { url: string }) {
   return (
-    <a href={url} target="_blank" rel="noopener noreferrer" className={LINK_CLASS}>
+    <a
+      href={url}
+      target="_blank"
+      rel="noopener noreferrer"
+      onClick={(e) => onLinkClick(e, url)}
+      className={LINK_CLASS}
+    >
       {url}
     </a>
   );
@@ -466,6 +473,7 @@ function renderInline(text: string, baseKey = ""): React.ReactNode[] {
           href={href}
           target="_blank"
           rel="noopener noreferrer"
+          onClick={(e) => onLinkClick(e, href)}
           className="text-violet-700 dark:text-violet-300 hover:text-violet-800 dark:hover:text-violet-200 underline underline-offset-2 decoration-violet-400/40 hover:decoration-violet-300/70"
         >
           {renderInline(linkM[1]!, `${baseKey}-l${n}`)}

client/src/components/conversation/MessageList.tsx

@@ -865,7 +865,7 @@ function MessageListView({
           className={
             compact
               ? "space-y-3 py-1 pr-2"
-              : "mx-auto flex w-full max-w-3xl flex-col gap-3 px-4 py-6"
+              : "mx-auto flex w-full max-w-5xl flex-col gap-3 px-4 py-6"
           }
         >
           {items.map((item) => {

client/src/components/lanes/LaneChangesPanel.tsx

@@ -489,8 +489,9 @@ function FileActions({
           title={t("changes.discardConfirm")}
           disabled={busy}
           onClick={() => onAct("discard", f.path, true)}
-          className={`${HUNK_CHIP} border-status-danger bg-status-danger/20 text-status-danger`}
+          className="flex shrink-0 items-center gap-1 rounded bg-status-danger/10 px-1 py-0.5 text-[11px] leading-3 text-status-danger hover:bg-status-danger/20 disabled:opacity-40"
         >
+          <Trash2 className="h-3 w-3" />
           {t("changes.discardShortConfirm")}
         </button>
       ) : (

client/src/components/lanes/LaneGitHeader.tsx

@@ -373,12 +373,17 @@ export function LaneGitHeader({
         className="flex min-w-0 flex-1 items-baseline gap-1.5 font-mono text-[11px]"
         title={`${git.head} ${git.subject}`}
       >
-        <span className="flex shrink-0 items-center gap-1 self-center font-semibold text-fg-primary">
-          <GitBranch className="h-3 w-3 text-fg-muted" />
-          {git.branch}
+        {/* A long branch name truncates too (after the subject has gone),
+            or it overflowed onto the head and the action icons. */}
+        <span
+          className="flex min-w-[5rem] items-center gap-1 self-center font-semibold text-fg-primary"
+          title={git.branch}
+        >
+          <GitBranch className="h-3 w-3 shrink-0 text-fg-muted" />
+          <span className="truncate">{git.branch}</span>
         </span>
         <span className="shrink-0 text-fg-muted">{git.head}</span>
-        <span className="min-w-0 truncate text-fg-muted">{git.subject}</span>
+        <span className="min-w-0 shrink-[999] truncate text-fg-muted">{git.subject}</span>
       </div>
     </>
   );

client/src/components/lanes/SessionReplay.tsx

@@ -145,7 +145,7 @@ export function SessionReplay({
       {livePane ? (
         <div
           data-testid="session-replay-live"
-          className="mx-auto flex w-full max-w-3xl items-center gap-2 rounded-2xl border border-border p-3 text-xs text-fg-secondary"
+          className="mx-auto flex w-full max-w-5xl items-center gap-2 rounded-2xl border border-border p-3 text-xs text-fg-secondary"
         >
           <span className="min-w-0 flex-1">{t("replay.live")}</span>
           <button
@@ -160,7 +160,7 @@ export function SessionReplay({
       ) : session && !resumable ? (
         <div
           data-testid="session-replay-no-resume"
-          className="mx-auto flex w-full max-w-3xl items-center gap-2 rounded-2xl border border-border p-3 text-xs text-fg-secondary"
+          className="mx-auto flex w-full max-w-5xl items-center gap-2 rounded-2xl border border-border p-3 text-xs text-fg-secondary"
         >
           <span className="min-w-0 flex-1">{t("replay.noResume", { tool })}</span>
           <button
@@ -172,7 +172,7 @@ export function SessionReplay({
           </button>
         </div>
       ) : (
-        <div className="mx-auto w-full max-w-3xl rounded-2xl border border-border p-2 shadow-sm transition-colors focus-within:border-accent/50">
+        <div className="mx-auto w-full max-w-5xl rounded-2xl border border-border p-2 shadow-sm transition-colors focus-within:border-accent/50">
           <PromptEditor
             bare
             images={images}

client/src/components/lanes/UrlPreview.tsx

@@ -0,0 +1,159 @@
+/**
+ * @file UrlPreview.tsx
+ * @description The session panel's Preview tab: a web page (a lane's dev
+ * server, mostly) shown beside the console. One bar — address, Reload, Open
+ * in a browser tab — and, before anything is open, the workspace's own ports
+ * as one-click chips. The page runs in an `<iframe src>` on ITS OWN origin:
+ * `normalizePreviewUrl` refuses the dashboard's origin and anything but
+ * http(s), and the sandbox leaves out top navigation so a page cannot move
+ * the dashboard away. A site that forbids framing (most login pages) shows
+ * blank; that is the browser's rule, so the way out is the Open button. The
+ * last address is remembered per workspace in localStorage (a viewer
+ * convenience, never the server's).
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+import { useEffect, useState } from "react";
+import { useTranslation } from "react-i18next";
+import { ExternalLink, Globe, RotateCw } from "lucide-react";
+import { normalizePreviewUrl } from "../../lib/openInPreview";
+import { isSubmitEnter } from "../../lib/keys";
+import { toast } from "../../lib/toast";
+
+const KEY = (laneId: number) => `agenthub.preview.url.${laneId}`;
+
+function readSaved(laneId: number): string {
+  try {
+    return window.localStorage.getItem(KEY(laneId)) ?? "";
+  } catch {
+    return "";
+  }
+}
+
+/** The frame's sandbox: everything a web app needs, minus moving the
+ *  dashboard (`allow-top-navigation*`). `allow-same-origin` is the PAGE's
+ *  own origin — never the dashboard's, which `normalizePreviewUrl` refuses. */
+const FRAME_SANDBOX =
+  "allow-scripts allow-same-origin allow-forms allow-popups allow-popups-to-escape-sandbox allow-modals allow-downloads";
+
+export function UrlPreview({
+  laneId,
+  ports,
+  request,
+}: {
+  laneId: number;
+  /** The lane's bound ports, by name — the chips of the empty state. */
+  ports: Record<string, number>;
+  /** A link asked for this page (`openInPreview`); a new nonce re-opens it. */
+  request: { url: string; nonce: number } | null;
+}) {
+  const { t } = useTranslation("lanes");
+  const [url, setUrl] = useState(() => readSaved(laneId));
+  const [draft, setDraft] = useState(url);
+  const [reload, setReload] = useState(0);
+
+  // Another workspace: its own last page.
+  useEffect(() => {
+    const saved = readSaved(laneId);
+    setUrl(saved);
+    setDraft(saved);
+  }, [laneId]);
+
+  useEffect(() => {
+    if (request) go(request.url);
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- keyed on the nonce
+  }, [request?.nonce]);
+
+  function go(raw: string) {
+    const next = normalizePreviewUrl(raw);
+    if (!next) {
+      toast.error(t("preview.badUrl"));
+      return;
+    }
+    setUrl(next);
+    setDraft(next);
+    setReload((n) => n + 1);
+    try {
+      window.localStorage.setItem(KEY(laneId), next);
+    } catch {
+      /* disabled storage: the tab just forgets between visits */
+    }
+  }
+
+  const portList = Object.entries(ports ?? {}).filter(([, p]) => Number.isInteger(p) && p > 0);
+  const btn =
+    "flex h-7 w-7 shrink-0 items-center justify-center rounded-md text-fg-muted transition-colors hover:bg-surface-4 hover:text-fg-primary disabled:opacity-40 disabled:hover:bg-transparent";
+
+  return (
+    <div className="flex min-h-0 flex-1 flex-col" data-testid="url-preview">
+      <div className="flex shrink-0 items-center gap-1 border-b border-border px-2 py-1.5">
+        <input
+          value={draft}
+          onChange={(e) => setDraft(e.target.value)}
+          onKeyDown={(e) => {
+            if (isSubmitEnter(e)) {
+              e.preventDefault();
+              go(draft);
+            }
+          }}
+          placeholder="localhost:3000"
+          aria-label={t("preview.address")}
+          spellCheck={false}
+          className="min-w-0 flex-1 rounded border border-border bg-surface-1 px-2 py-1 font-mono text-[11px] text-fg-primary"
+        />
+        <button
+          type="button"
+          className={btn}
+          disabled={!url}
+          onClick={() => setReload((n) => n + 1)}
+          title={t("preview.reload")}
+          aria-label={t("preview.reload")}
+        >
+          <RotateCw className="h-3.5 w-3.5" />
+        </button>
+        <button
+          type="button"
+          className={btn}
+          disabled={!url}
+          onClick={() => url && window.open(url, "_blank", "noopener,noreferrer")}
+          title={t("preview.openTab")}
+          aria-label={t("preview.openTab")}
+        >
+          <ExternalLink className="h-3.5 w-3.5" />
+        </button>
+      </div>
+      {url ? (
+        <iframe
+          key={`${url}#${reload}`}
+          src={url}
+          title={t("preview.title")}
+          sandbox={FRAME_SANDBOX}
+          referrerPolicy="no-referrer"
+          className="min-h-0 w-full flex-1 border-0 bg-white"
+          data-testid="url-preview-frame"
+        />
+      ) : (
+        <div className="flex flex-1 flex-col items-center justify-center gap-3 px-6 text-center">
+          <Globe className="h-6 w-6 text-fg-muted" />
+          <p className="text-xs text-fg-secondary">{t("preview.empty")}</p>
+          {portList.length > 0 && (
+            <div className="flex flex-wrap justify-center gap-1.5">
+              {portList.map(([name, port]) => (
+                <button
+                  key={name}
+                  type="button"
+                  onClick={() => go(`localhost:${port}`)}
+                  title={name}
+                  className="rounded-full border border-border px-2.5 py-0.5 font-mono text-[11px] text-fg-secondary transition-colors hover:bg-surface-4 hover:text-fg-primary"
+                >
+                  localhost:{port}
+                </button>
+              ))}
+            </div>
+          )}
+          <p className="text-[11px] text-fg-muted">{t("preview.loginHint")}</p>
+        </div>
+      )}
+    </div>
+  );
+}

client/src/components/lanes/__tests__/UrlPreview.test.tsx

@@ -0,0 +1,47 @@
+/**
+ * @file UrlPreview.test.tsx
+ * @description The Preview tab: port chips before a page is open, the
+ * address bar opening a page in a sandboxed frame without top navigation,
+ * a link's request opening its page, and the dashboard's own origin refused.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+import { beforeEach, describe, expect, it } from "vitest";
+import { fireEvent, render, screen } from "@testing-library/react";
+import "../../../i18n";
+import { UrlPreview } from "../UrlPreview";
+
+beforeEach(() => window.localStorage.clear());
+
+describe("UrlPreview", () => {
+  it("offers the workspace's ports, and a chip opens that page", () => {
+    render(<UrlPreview laneId={1} ports={{ web: 3001 }} request={null} />);
+    fireEvent.click(screen.getByText("localhost:3001"));
+    const frame = screen.getByTestId("url-preview-frame");
+    expect(frame.getAttribute("src")).toBe("http://localhost:3001/");
+    expect(frame.getAttribute("sandbox")).not.toMatch(/top-navigation/);
+    expect(window.localStorage.getItem("agenthub.preview.url.1")).toBe("http://localhost:3001/");
+  });
+
+  it("opens what the address bar names, and refuses the dashboard itself", () => {
+    render(<UrlPreview laneId={2} ports={{}} request={null} />);
+    const input = screen.getByRole("textbox");
+    fireEvent.change(input, { target: { value: window.location.origin + "/settings" } });
+    fireEvent.keyDown(input, { key: "Enter" });
+    expect(screen.queryByTestId("url-preview-frame")).toBeNull();
+    fireEvent.change(input, { target: { value: "127.0.0.1:8080/app" } });
+    fireEvent.keyDown(input, { key: "Enter" });
+    expect(screen.getByTestId("url-preview-frame").getAttribute("src")).toBe(
+      "http://127.0.0.1:8080/app"
+    );
+  });
+
+  it("opens a link's request", () => {
+    render(
+      <UrlPreview laneId={3} ports={{}} request={{ url: "http://localhost:5173/", nonce: 1 }} />
+    );
+    expect(screen.getByTestId("url-preview-frame").getAttribute("src")).toBe(
+      "http://localhost:5173/"
+    );
+  });
+});

client/src/components/run/ChatAddMenu.tsx

@@ -78,7 +78,7 @@ function loadLists(cwd: string): Promise<Lists> {
 }
 
 const PANEL =
-  "absolute w-60 rounded-xl border border-border bg-surface-1 py-1 shadow-lg animate-fade-in";
+  "absolute z-40 w-60 rounded-xl border border-border bg-surface-1 py-1 shadow-lg animate-fade-in";
 /** Room the menu and its tallest submenu (Project files: search + list) need. */
 const MENU_ROOM = 380;
 

client/src/components/run/ConsoleTabs.tsx

@@ -16,8 +16,9 @@
  * keys, Home and End move between tabs (one tab stop, APG). Errors are
  * toasts. The `+` menu opens a new tab in the free slot the server picks
  * (`slot: "auto"`) — a plain shell (`POST /api/lanes/:id/start {shell: true}`)
- * or an installed, enabled AI tool started bare on its default model, no
- * prompt (a prompt, proxy or worktree is still the workspace home's prompt
+ * or an installed, enabled AI tool started bare on its default model and
+ * the account's Session defaults (permission mode, Codex sandbox/approval/
+ * bypass), no prompt (a prompt, proxy or worktree is still the workspace home's prompt
  * box) — plus a link to Settings → Agents. Ten sessions is the server's limit
  * (`MAX_PANE_SLOT`). The bar is the console's only header: Home (the
  * workspace's home) at its left end, `actions` (the single pane's split menus)
@@ -72,6 +73,7 @@ import {
   type GroupsUpdate,
 } from "./PaneGrid";
 import { insertionIndex } from "../../lib/laneOrderStorage";
+import { readCodexDefaults, readDefaultMode } from "../../lib/sessionDefaults";
 import {
   type PaneGroups,
   MAX_PANES,
@@ -140,15 +142,21 @@ export function newTabTools(lane: Lane, aiTools: AiToolsState): string[] {
   ];
 }
 
-/** The start body of a bare tool on its default model, no prompt. Only a
- *  different tool is named, as the home does: the workspace's own keeps
- *  starting even once disabled. */
+/** The start body of a bare tool on its default model, no prompt, in the
+ *  account's Session defaults (Claude's permission mode, Codex's sandbox,
+ *  approval and bypass) — the same ones the workspace home's prompt box starts
+ *  from. Only a different tool is named, as the home does: the workspace's own
+ *  keeps starting even once disabled. */
 export function newTabBody(id: string, lane: Lane, aiTools: AiToolsState) {
   const model = aiTools.byId(id)?.defaultModel;
+  const codex = id === "codex" ? readCodexDefaults() : null;
   return {
     prompt: "",
     ...(id !== lane.tool ? { tool: id } : {}),
     ...(model ? { model } : {}),
+    ...(id === "claude" ? { permissionMode: readDefaultMode() } : {}),
+    ...(codex ? { sandbox: codex.sandbox, approval: codex.approval } : {}),
+    ...(codex?.bypass && aiTools.byId(id)?.bypass ? { bypass: true } : {}),
   };
 }
 

client/src/components/run/PaneChat.tsx

@@ -689,8 +689,11 @@ export const PaneChat = memo(function PaneChat({
     // another dashboard on the same database, or the socket dropped) would
     // otherwise leave Stop up after the turn ended.
     intervalMs: working || waiting ? 5000 : undefined,
+    // The transcript growing re-reads it too: a hook that reached another
+    // dashboard on the same database sends this one no agent_updated, and
+    // without a poll Stop never showed for a turn the chat calls Thinking….
     match: (msg) =>
-      msg.type === "agent_updated" &&
+      (msg.type === "agent_updated" || msg.type === "transcript_changed") &&
       (msg.data as { session_id?: string } | undefined)?.session_id === sessionId,
   });
 
@@ -855,7 +858,7 @@ export const PaneChat = memo(function PaneChat({
           )}
         </div>
         <div className="mx-4">
-          <div className="mx-auto w-full max-w-3xl">
+          <div className="mx-auto w-full max-w-5xl">
             {menu && (
               <PaneMenuCard
                 // A new question starts with its field closed.

client/src/components/run/TerminalView.tsx

@@ -90,6 +90,7 @@ import { nativePasteKey, nativePasteWorks, readNativePaste } from "../../lib/nat
 import { usePermissions } from "../AuthGate";
 import { TERMINAL_FONTS, readTerminalFont } from "../../lib/terminalFont";
 import { FONT_SIZE_EVENT, readTerminalFontSize } from "../../lib/fontSize";
+import { openInPreview } from "../../lib/openInPreview";
 
 type DropState = "hint" | "paste" | "uploading" | "failed" | "tooBig" | "tooBigLocalPaste";
 
@@ -462,7 +463,10 @@ export const TerminalView = memo(function TerminalView({
       searchRef.current = search;
       term.loadAddon(new ClipboardWithProvider(undefined, clipboardProvider));
       term.loadAddon(
-        new WebLinksAddon((_e, uri) => {
+        new WebLinksAddon((e, uri) => {
+          // A local page opens in the session panel's Preview (one rule
+          // for every link, `lib/openInPreview.ts`); Ctrl/Cmd keeps a tab.
+          if (!e.ctrlKey && !e.metaKey && !e.shiftKey && openInPreview(uri)) return;
           window.open(uri, "_blank", "noopener,noreferrer");
         })
       );

client/src/i18n/locales/en/lanes.json

@@ -385,6 +385,14 @@
   "menu.remove": "Delete workspace…",
   "panel.changes": "Changes",
   "panel.analyst": "Analyst",
+  "panel.preview": "Preview",
+  "preview.title": "Page preview",
+  "preview.address": "Page address",
+  "preview.reload": "Reload",
+  "preview.openTab": "Open in a browser tab",
+  "preview.badUrl": "Only an http(s) page other than the dashboard can be previewed",
+  "preview.empty": "Type an address, or click a localhost link in the chat or terminal.",
+  "preview.loginHint": "A blank page? The site may forbid embedding or need a login — open it in a browser tab.",
   "replay.placeholder": "Message to continue this session…",
   "replay.hint": "Sending resumes the session in a free pane.",
   "replay.send": "Send",

client/src/i18n/locales/vi/lanes.json

@@ -385,6 +385,14 @@
   "menu.remove": "Xóa workspace…",
   "panel.changes": "Thay đổi",
   "panel.analyst": "Analyst",
+  "panel.preview": "Xem trang",
+  "preview.title": "Xem trước trang web",
+  "preview.address": "Địa chỉ trang",
+  "preview.reload": "Tải lại",
+  "preview.openTab": "Mở trong tab trình duyệt",
+  "preview.badUrl": "Chỉ xem được trang http(s) khác với dashboard",
+  "preview.empty": "Nhập địa chỉ, hoặc bấm một link localhost trong chat hay terminal.",
+  "preview.loginHint": "Trang trắng? Trang có thể chặn nhúng hoặc cần đăng nhập — hãy mở trong tab trình duyệt.",
   "replay.placeholder": "Nhắn để tiếp tục session này…",
   "replay.hint": "Gửi tin sẽ resume session trong một pane trống.",
   "replay.send": "Gửi",

client/src/lib/__tests__/openInPreview.test.ts

@@ -0,0 +1,84 @@
+/**
+ * @file openInPreview.test.ts
+ * @description The one link rule: which URLs the Preview takes (http(s),
+ * never the dashboard's origin, `0.0.0.0` read as `localhost`), that a local
+ * link goes to the session panel only when one answers, and that a
+ * Ctrl/Cmd click keeps the browser's own tab.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+import { afterEach, describe, expect, it, vi } from "vitest";
+import {
+  OPEN_IN_PREVIEW_EVENT,
+  isLoopbackUrl,
+  normalizePreviewUrl,
+  onLinkClick,
+  openInPreview,
+  type OpenInPreview,
+} from "../openInPreview";
+
+const SELF = "http://localhost:4820";
+
+describe("normalizePreviewUrl", () => {
+  it("adds http:// to a bare host:port and reads 0.0.0.0 as localhost", () => {
+    expect(normalizePreviewUrl("localhost:3000", SELF)).toBe("http://localhost:3000/");
+    expect(normalizePreviewUrl("http://0.0.0.0:5173/a", SELF)).toBe("http://localhost:5173/a");
+  });
+  it("refuses the dashboard's own origin, other schemes and credentials", () => {
+    expect(normalizePreviewUrl("http://localhost:4820/settings", SELF)).toBeNull();
+    expect(normalizePreviewUrl("javascript:alert(1)", SELF)).toBeNull();
+    expect(normalizePreviewUrl("file:///etc/passwd", SELF)).toBeNull();
+    expect(normalizePreviewUrl("http://u:p@localhost:3000", SELF)).toBeNull();
+    expect(normalizePreviewUrl("  ", SELF)).toBeNull();
+  });
+  it("accepts an external https page", () => {
+    expect(normalizePreviewUrl("https://example.com/x", SELF)).toBe("https://example.com/x");
+  });
+});
+
+describe("isLoopbackUrl", () => {
+  it("is true only for this machine's hosts", () => {
+    expect(isLoopbackUrl("http://localhost:3000")).toBe(true);
+    expect(isLoopbackUrl("http://127.0.0.1:8080/x")).toBe(true);
+    expect(isLoopbackUrl("http://[::1]:3000")).toBe(true);
+    expect(isLoopbackUrl("https://github.com")).toBe(false);
+    expect(isLoopbackUrl("not a url")).toBe(false);
+  });
+});
+
+describe("openInPreview", () => {
+  let off: (() => void) | null = null;
+  afterEach(() => off?.());
+  const listen = (take: boolean) => {
+    const seen: string[] = [];
+    const fn = (e: Event) => {
+      const d = (e as CustomEvent<OpenInPreview>).detail;
+      seen.push(d.url);
+      if (take) d.handled = true;
+    };
+    window.addEventListener(OPEN_IN_PREVIEW_EVENT, fn);
+    off = () => window.removeEventListener(OPEN_IN_PREVIEW_EVENT, fn);
+    return seen;
+  };
+
+  it("hands a local page to a listening panel", () => {
+    const seen = listen(true);
+    expect(openInPreview("http://localhost:3000/login")).toBe(true);
+    expect(seen).toEqual(["http://localhost:3000/login"]);
+  });
+  it("falls back when no panel takes it, and never sends an external page", () => {
+    const seen = listen(false);
+    expect(openInPreview("http://localhost:3000")).toBe(false);
+    expect(openInPreview("https://github.com/login")).toBe(false);
+    expect(seen).toEqual(["http://localhost:3000/"]);
+  });
+  it("leaves a Ctrl/Cmd click to the browser", () => {
+    listen(true);
+    const preventDefault = vi.fn();
+    const base = { ctrlKey: false, metaKey: false, shiftKey: false, button: 0, preventDefault };
+    onLinkClick({ ...base, ctrlKey: true }, "http://localhost:3000");
+    expect(preventDefault).not.toHaveBeenCalled();
+    onLinkClick(base, "http://localhost:3000");
+    expect(preventDefault).toHaveBeenCalledTimes(1);
+  });
+});

client/src/lib/__tests__/panePaste.test.ts

@@ -432,6 +432,14 @@ describe("readRunBusy", () => {
     let rows = ["✻ Thinking… (4s · ↓ 120 tokens · esc to interrupt)"];
     const off = registerPane("agenthub-lane-8", () => {}, () => true, undefined, undefined, () => rows);
     expect(readRunBusy("agenthub-lane-8", "claude")).toBe(true);
+    // Claude's spinner with the footer's hint gone (a narrow pane, a tip).
+    rows = ["✶ Skedaddling… (41s · ↓ 2.8k tokens · thought for 2s)", "  ⏵⏵ auto mode on"];
+    expect(readRunBusy("agenthub-lane-8", "claude")).toBe(true);
+    rows = ["✻ Thinking… (1m 3s)"];
+    expect(readRunBusy("agenthub-lane-8", "claude")).toBe(true);
+    // The line a finished turn leaves is not.
+    rows = ["✻ Cooked for 1m 2s", "❯ "];
+    expect(readRunBusy("agenthub-lane-8", "claude")).toBe(false);
     // Claude's permission footer is not a turn at work.
     rows = ["Esc to cancel · Tab to amend"];
     expect(readRunBusy("agenthub-lane-8", "claude")).toBe(false);

client/src/lib/openInPreview.ts

@@ -0,0 +1,83 @@
+/**
+ * @file openInPreview.ts — the ONE rule every link in the dashboard follows
+ * (a chat's markdown link or bare URL, a terminal's link): a page served by
+ * THIS machine (`localhost`, `127.0.0.1`, `0.0.0.0`, `[::1]`) opens in the
+ * session view's Preview tab, everything else in a browser tab as before.
+ * The request travels as a window event (like `openInChanges.ts`); the
+ * Workspace page answers it only while it shows a session panel, so with no
+ * listener — another page, or a remote dashboard where "localhost" is the
+ * viewer's own machine — the link falls back to a browser tab. Also holds the
+ * URL checks the Preview tab itself uses.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+export const OPEN_IN_PREVIEW_EVENT = "agenthub:open-in-preview";
+
+/** The event's detail. `handled` is set by the listener, read by the sender. */
+export type OpenInPreview = { url: string; handled: boolean };
+
+const LOOPBACK = new Set(["localhost", "127.0.0.1", "0.0.0.0", "[::1]", "::1"]);
+
+/** A URL the Preview may show: http(s) only, `0.0.0.0` read as `localhost`
+ *  (a dev server prints it, a browser cannot open it), never the dashboard's
+ *  own origin (the frame would then BE the dashboard, cookies and API
+ *  included). A bare `localhost:3000` gets `http://`. Null when refused. */
+export function normalizePreviewUrl(raw: string, self = window.location.origin): string | null {
+  let text = raw.trim();
+  if (!text) return null;
+  if (!/^[a-z][a-z0-9+.-]*:\/\//i.test(text)) text = `http://${text}`;
+  let u: URL;
+  try {
+    u = new URL(text);
+  } catch {
+    return null;
+  }
+  if (u.protocol !== "http:" && u.protocol !== "https:") return null;
+  if (u.username || u.password) return null;
+  if (u.hostname === "0.0.0.0") u.hostname = "localhost";
+  if (u.origin === self) return null;
+  return u.toString();
+}
+
+/** True for a page served by the machine the BROWSER runs on. */
+export function isLoopbackUrl(url: string): boolean {
+  try {
+    const u = new URL(url);
+    return (u.protocol === "http:" || u.protocol === "https:") && LOOPBACK.has(u.hostname);
+  } catch {
+    return false;
+  }
+}
+
+/** The dashboard itself is opened from this machine: only then does a
+ *  `localhost` link name the same machine the agents run on. */
+export function dashboardIsLocal(hostname = window.location.hostname): boolean {
+  return LOOPBACK.has(hostname);
+}
+
+/** Asks the open session panel to show `url`. False when nothing took it
+ *  (not a local page, a remote dashboard, no session panel). */
+export function openInPreview(url: string): boolean {
+  if (!isLoopbackUrl(url) || !dashboardIsLocal()) return false;
+  const target = normalizePreviewUrl(url);
+  if (!target) return false;
+  const detail: OpenInPreview = { url: target, handled: false };
+  window.dispatchEvent(new CustomEvent(OPEN_IN_PREVIEW_EVENT, { detail }));
+  return detail.handled;
+}
+
+/** A link click: Preview when the rule says so, else a browser tab. A
+ *  Ctrl/Cmd/Shift/middle click always keeps the browser's own behaviour. */
+export function onLinkClick(
+  e: {
+    ctrlKey: boolean;
+    metaKey: boolean;
+    shiftKey: boolean;
+    button: number;
+    preventDefault: () => void;
+  },
+  url: string
+): void {
+  if (e.ctrlKey || e.metaKey || e.shiftKey || e.button !== 0) return;
+  if (openInPreview(url)) e.preventDefault();
+}

client/src/lib/panePaste.ts

@@ -368,10 +368,15 @@ function typeRow(options: PaneMenuOption[]): number {
 /** The status line a tool's TUI shows only while a turn runs, read off its
  *  binary's own strings: Claude's and Codex's `esc to interrupt`, agy's
  *  `Thinking… (3s · esc to cancel)` — in parentheses after an ellipsis, so
- *  Claude's permission footer (`Esc to cancel · Tab to amend`) is not it. A
- *  tool missing here (omp, Cursor) has no line we know. */
+ *  Claude's permission footer (`Esc to cancel · Tab to amend`) is not it.
+ *  Claude ≥ 2.1.3xx keeps `esc to interrupt` only in its footer, which a
+ *  narrow pane, a tip or a notice replaces, so its spinner line counts too:
+ *  a verb, an ellipsis and the turn's time in parentheses
+ *  (`✶ Skedaddling… (41s · ↓ 2.8k tokens)`) — the line a finished turn leaves
+ *  (`✻ Cooked for 1m 2s`) has neither. A tool missing here (omp, Cursor) has
+ *  no line we know. */
 export const BUSY_LINE: Readonly<Record<string, RegExp>> = {
-  claude: /\besc to interrupt\b/i,
+  claude: /\besc to interrupt\b|…\s*\(\s*\d+[smh]\b/i,
   codex: /\besc to interrupt\b/i,
   antigravity: /…\s*\([^)]*\besc to cancel\)/i,
 };

client/src/pages/Workspace.tsx

@@ -141,6 +141,8 @@ import { LaneChangesPanel } from "../components/lanes/LaneChangesPanel";
 import { FileExplorer } from "../components/lanes/FileExplorer";
 import { WorkspaceContext } from "../components/lanes/WorkspaceContext";
 import { OPEN_IN_CHANGES_EVENT, type OpenInChanges } from "../lib/openInChanges";
+import { OPEN_IN_PREVIEW_EVENT, type OpenInPreview } from "../lib/openInPreview";
+import { UrlPreview } from "../components/lanes/UrlPreview";
 import { LaneGitRailCounts } from "../components/lanes/LaneGitHeader";
 import { WorkspaceHome } from "../components/lanes/WorkspaceHome";
 import { SessionReplay } from "../components/lanes/SessionReplay";
@@ -148,6 +150,8 @@ import { DestructiveLaneModal } from "../components/lanes/DestructiveLaneModal";
 
 /** localStorage key for the Changes panel's open/closed state. */
 const CHANGES_OPEN_KEY = "agenthub.workspace.changesOpen";
+/** The session panel's tab — Changes or Preview. A viewer preference. */
+const PANEL_TAB_KEY = "agenthub.workspace.panelTab";
 /** localStorage key for how wide the Changes panel is. */
 const CHANGES_SIZE_KEY = "agenthub.workspace.changesSize";
 /** localStorage key for the last width the user dragged the panel to — what
@@ -799,6 +803,25 @@ export function Workspace() {
       return false;
     }
   });
+  // The panel's two tabs: Changes (git + files) and Preview (a web page).
+  // Both stay mounted once shown (CSS), so an unsaved edit or a loaded page
+  // survives a switch.
+  const [panelTab, setPanelTab] = useState<"changes" | "preview">(() => {
+    try {
+      return window.localStorage.getItem(PANEL_TAB_KEY) === "preview" ? "preview" : "changes";
+    } catch {
+      return "changes";
+    }
+  });
+  const [previewShown, setPreviewShown] = useState(panelTab === "preview");
+  useEffect(() => {
+    if (panelTab === "preview") setPreviewShown(true);
+    try {
+      window.localStorage.setItem(PANEL_TAB_KEY, panelTab);
+    } catch {
+      /* disabled storage: the tab just forgets between visits */
+    }
+  }, [panelTab]);
   useEffect(() => {
     try {
       window.localStorage.setItem(CHANGES_OPEN_KEY, changesOpen ? "1" : "0");
@@ -1050,6 +1073,22 @@ export function Workspace() {
     window.addEventListener(OPEN_IN_CHANGES_EVENT, onOpen);
     return () => window.removeEventListener(OPEN_IN_CHANGES_EVENT, onOpen);
   }, []);
+  // A link to a local page asks for it (`openInPreview`): taken only while a
+  // session panel is on screen, so elsewhere the link opens a browser tab.
+  const [previewRequest, setPreviewRequest] = useState<{ url: string; nonce: number } | null>(null);
+  const previewHostRef = useRef(false);
+  useEffect(() => {
+    const onOpen = (e: Event) => {
+      const detail = (e as CustomEvent<OpenInPreview>).detail;
+      if (!previewHostRef.current) return;
+      detail.handled = true;
+      setChangesOpen(true);
+      setPanelTab("preview");
+      setPreviewRequest((r) => ({ url: detail.url, nonce: (r?.nonce ?? 0) + 1 }));
+    };
+    window.addEventListener(OPEN_IN_PREVIEW_EVENT, onOpen);
+    return () => window.removeEventListener(OPEN_IN_PREVIEW_EVENT, onOpen);
+  }, []);
   // Asked once: a panel reopened or moved to another tree must not replay it.
   useEffect(() => {
     if (!changesOpen) setChangesRequest(null);
@@ -1230,6 +1269,7 @@ export function Workspace() {
   // The session view (console or replay) fills the page edge to edge, like an
   // editor: no page padding, no cards, dividers between its regions.
   const sessionView = !!currentLane && !home;
+  previewHostRef.current = sessionView;
   const viewportLocked =
     sessionView || (!home && (paneHasActiveRun || (!!currentLane && changesOpen && changesFull)));
 
@@ -1567,9 +1607,25 @@ export function Workspace() {
                   className="flex h-10 shrink-0 items-center gap-1 border-b border-border px-2"
                   role="toolbar"
                 >
-                  <span className="px-1 text-xs font-medium text-fg-secondary">
-                    {tLanes("panel.changes")}
-                  </span>
+                  <div role="tablist" className="flex items-center gap-0.5">
+                    {(["changes", "preview"] as const).map((tab) => (
+                      <button
+                        key={tab}
+                        type="button"
+                        role="tab"
+                        data-testid={`panel-tab-${tab}`}
+                        aria-selected={panelTab === tab}
+                        onClick={() => setPanelTab(tab)}
+                        className={`rounded-md px-2 py-1 text-xs font-medium transition-colors ${
+                          panelTab === tab
+                            ? "bg-surface-4 text-fg-primary"
+                            : "text-fg-muted hover:text-fg-primary"
+                        }`}
+                      >
+                        {tLanes(tab === "changes" ? "panel.changes" : "panel.preview")}
+                      </button>
+                    ))}
+                  </div>
                   {/* The opened session's analysis page — a page of its own. */}
                   <button
                     type="button"
@@ -1652,7 +1708,22 @@ export function Workspace() {
                     <PanelRightClose className="h-4 w-4" />
                   </button>
                 </div>
-                <div className="flex min-h-0 flex-1 flex-col px-3 pt-2">
+                {previewShown && (
+                  <div
+                    className={panelTab === "preview" ? "flex min-h-0 flex-1 flex-col" : "hidden"}
+                  >
+                    <UrlPreview
+                      laneId={currentLane.id}
+                      ports={currentLane.ports ?? {}}
+                      request={previewRequest}
+                    />
+                  </div>
+                )}
+                <div
+                  className={
+                    panelTab === "changes" ? "flex min-h-0 flex-1 flex-col px-3 pt-2" : "hidden"
+                  }
+                >
                   {panelAt &&
                     [
                       ...(showRoot

client/src/pages/__tests__/Workspace.test.tsx

@@ -1053,7 +1053,28 @@ describe("split panes", () => {
     const user = userEvent.setup();
     await user.click(screen.getByTestId("pane-split-right-1"));
     await user.click(screen.getByTestId("pane-split-new-right-1-claude"));
-    expect(api.lanes.action).toHaveBeenCalledWith(1, "start", { slot: "auto", prompt: "" });
+    expect(api.lanes.action).toHaveBeenCalledWith(1, "start", {
+      slot: "auto",
+      prompt: "",
+      permissionMode: "auto",
+    });
+  });
+
+  it("a new AI pane starts in the account's Session defaults (bypass included)", async () => {
+    localStorage.setItem("agenthub.permissionMode", "bypassPermissions");
+    lanesToReturn = lanesToReturn.map((l) => ({ ...l, tool: "claude" }));
+    withRuns([live(0), live(1)]);
+    await open("/workspace?lane=1&run=agenthub-lane-1");
+    await ctrlClick(screen.getByTestId("console-tab-1"));
+    const user = userEvent.setup();
+    await user.click(screen.getByTestId("pane-split-right-1"));
+    await user.click(screen.getByTestId("pane-split-new-right-1-claude"));
+    expect(api.lanes.action).toHaveBeenCalledWith(1, "start", {
+      slot: "auto",
+      prompt: "",
+      permissionMode: "bypassPermissions",
+    });
+    localStorage.removeItem("agenthub.permissionMode");
   });
 
   it("with one pane, the split menus sit beside Tools and split it", async () => {

client/src/pages/__tests__/__snapshots__/screens.snapshot.test.tsx.snap

@@ -7316,7 +7316,7 @@ exports[`screen snapshots > Settings — about 1`] = `
                 <span
                   class="text-status-warning/90"
                 >
-                  UI build v2.8.53 (rebuild client to match)
+                  UI build v2.8.58 (rebuild client to match)
                 </span>
               </p>
             </div>

docs/LANES.md

@@ -416,6 +416,7 @@ The dashboard web UI merges workspaces and runs into a single **Workspace** page
 - **Tabs** — the session view's console is a tab bar (`client/src/components/run/ConsoleTabs.tsx`) over the workspace's live tmux sessions — at most ten, its slots 0–9: slot 0 is the workspace's `agenthub-lane-<id>` (its `run_id`), slots 1–9 are `agenthub-lane-<id>-<slot>`. Every tab is a **combo**: a group of one to four split panes, each session in exactly one tab (`PaneGroups` in `client/src/lib/paneLayout.ts`). A one-pane tab shows its AI tool's icon and name (or **Terminal**); a combo tab shows every pane's icon and name, and the most urgent state dot. The active tab is the one on screen and its focused pane is the URL's `?run=`, so the Changes panel and Analyst follow it. A click shows a tab; **Ctrl/Cmd+click** on a one-pane tab or a `+` item brings it into the tab on screen, in the same order as a join below (a full tab — four panes — opens it as a tab of its own instead), and a one-pane tab dragged onto a pane joins that tab there. Any tab drags along the bar to reorder it; a pane's header dragged onto the bar takes that pane out into a tab of its own at that place. Dropped on the MIDDLE of another tab (it highlights), a tab — or a pane's header — joins that tab instead, in a fixed order: the second pane goes to the right (left | right), the third under the right pane, the fourth under the left pane (2×2) — the new pane always splits the BIGGEST one by the tree's shape (dragged dividers ignored, a tie goes to the later pane), so a three-pane tab of any shape fills its one missing quarter; a drop that would pass four panes reorders instead (`joinGroup`). A pane drag (a pane's header, or a one-pane tab) held over another tab for 0.6 s opens that tab (`SPRING_MS`), so the pane can be dropped on any edge of that tab's panes instead of the fixed join order; on a bar wider than the screen, dragging near either end scrolls it. Every live session stays mounted and those of other tabs are hidden with CSS, so switching tabs never drops a terminal. A tab's **×** stops every session in it (`DELETE /api/run/<runId>`, after a confirm when one is an AI tool); with no tab left it moves to the home. The **+** menu opens a new tab in the first free slot, which the server picks (`slot: "auto"`, under the workspace lock): **New terminal** (your own default shell in the workspace folder — `POST /api/lanes/:id/start {slot, shell: true}`, recorded as tool `shell`; it is not an agent, so the workspace's `run_id`/`status` are left alone), each installed, enabled AI tool (started bare, on its default model, no prompt), and **Agent settings…** (Settings → Agents). With ten sessions open **+** is disabled. EVERY tab is bound to the sidebar's selection — unless Settings → Appearance → **Tabs from every workspace** is on (`agenthub.workspace.allTabs`, `client/src/lib/workspaceTabs.ts`, synced to the account): then the bar holds every workspace's live sessions, each tab named `<workspace> · <session>`, a combo may mix workspaces, and focusing a pane selects its workspace (`?lane=` follows `?run=`, so the Changes panel and the sidebar follow too). Those tabs are stored once, under `all` in `agenthub.workspace.paneLayout`, their leaves `paneKey`s (lane id × 10 + slot); a split's **New terminal** starts in the target pane's own workspace. A tab has no header of its own (no title, no **Active runs** list, no **New run**): other sessions are opened from the sidebar or the home's Recents. (The old fixed 1/2/4 split layout and its `agenthub.workspace.splitView` key are gone; **Split panes** replaces them.) **Settings** opened on a workspace — the sidebar's Settings, the `+` menu's Agent settings, any Settings link inside it — is one more tab at the bar's end (`?settings=<section>` beside `lane` and `run`, `client/src/lib/settingsLink.ts`): the Settings pages (`SettingsHub` with a `section`), shown instead of the panes, which stay mounted behind them, kept until the tab's X and reopened on the section it was on. Off a workspace a Settings link still opens the `/settings` page.
 
 - **Split panes** — the console splits like VS Code (`client/src/components/run/PaneGrid.tsx`, model in `client/src/lib/paneLayout.ts`): one binary tree of splits PER TAB, each side by side or stacked at a ratio, whose leaves are the workspace's slots — at most four panes in a tab, a session never shown twice. **Ctrl/Cmd+click** a one-pane tab, a `+` item or a sidebar session row brings it into the tab on screen at the 2×2 grid's next place — the same order as a tab join, whichever pane is focused (the intent rides on the navigation's state, never in the URL); with more than one pane each gets a slim header: **drag** it (or a tab) onto another pane — its edge splits there, its middle swaps the two (a session from another tab takes the pane's place and that one moves to a tab of its own) —; while the drag lasts the moved pane is dimmed, the drag shows a small chip with its name, and the drop preview says what will happen (*Place on the left*, *Swap places*…, `dropAction`), its **▾** shows another live session in it (swapping with the pane that showed it), **Split right / Split down** puts a not-shown session or a **New terminal** beside it, its **⤡** takes the pane out of this tab into a tab of its own (its session keeps running), and its **×** (also in the header's right-click menu) stops just that pane's session — the same `DELETE /api/run/<runId>` and AI-tool confirm as a tab's **×** — without taking it out first. A session dropped or swapped in from another tab leaves that tab. Dividers drag (or move by arrow keys) between 10% and 90%. Clicking in (or tabbing into) a pane focuses it, `?run=` follows — so the right panel, Analyst and the sidebar read the focused session — and the keyboard goes with it: only the focused pane's terminal takes it when it appears. A pane closes when its terminal reports that its session ended (exited, closed from another browser); the run list itself only prunes a remembered layout on a workspace's first read, and a pane opened here whose session never got listed — one empty read, which the server returns on any tmux error, never wipes a split. A session ending while the home or a replay is shown only closes its pane; the URL stays. The tabs and their layouts are a viewer preference kept per workspace in `localStorage` (`agenthub.workspace.paneLayout`, `{groups, active}`; a stored pre-tab single layout reads as one tab), never on the server. Every pane is an absolutely placed sibling keyed by its slot, so splitting, swapping or resizing never re-parents — and so never remounts — a live terminal; the session view itself fills the page edge to edge, its tab bar and the right panel's activity bar one header strip.
+- **Preview** — the session view's right panel has two tabs, **Changes** and **Preview** (`client/src/components/lanes/UrlPreview.tsx`). Preview shows a web page by address — before one is open, the workspace's bound ports are offered as `localhost:<port>` chips — with Reload and **Open in a browser tab**; the last address is remembered per workspace in this browser (`agenthub.preview.url.<id>`). Every link follows one rule (`client/src/lib/openInPreview.ts`): a chat link, bare URL or terminal link to `localhost`/`127.0.0.1`/`0.0.0.0`/`[::1]` opens in Preview while a session view is open and the dashboard itself is opened on this machine; any other link, and any Ctrl/Cmd click, opens a browser tab. The page runs on its own origin (the dashboard's own is refused) with no top navigation. A site that forbids embedding — most login pages — shows blank; open it in a browser tab.
 - **Workspace grid** — one card per workspace, 1 column, 2 at `md`, 3 at `xl`. Each card carries the workspace id, liveness dot and status, title, declared stage and time-on-stage, the `auto:` chip when detection leads, the kind and CI tags, the working-copy facts from `GET /api/lanes/:id/git`, and the action row. The needs-you message (`needs_action`) is on the workspace list tile only — the detail card no longer repeats it as a banner.
 
 Run history is per workspace, queryable via `GET /api/run/history?laneId=<n>`.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "agenthub",
-  "version": "2.8.53",
+  "version": "2.8.58",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "agenthub",
-      "version": "2.8.53",
+      "version": "2.8.58",
       "hasInstallScript": true,
       "license": "UNLICENSED",
       "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agenthub",
-  "version": "2.8.53",
+  "version": "2.8.58",
   "bin": {
     "agenthub": "bin/agenthub.js"
   },