feat: workspaces own their sessions; desktop parity; sidebar and settings cleanup

Workspace sessions (docs/plans/desktop-parity, phases 1-5 and 7):
- sessions.lane_id: a workspace lists only the sessions its panes held,
  stamped by bindRunSession (first writer wins, nested `claude -p`
  excluded); GET /api/sessions?lane=&archived=
- session row state dot, double-click rename, archive (sessions.archived_at,
  hides only); the activity bar's duplicate Sessions tab removed
- Fork beside Resume (--fork-session, Claude only), Ctrl/Cmd+click a live
  session opens it in a second pane, a diff line's comment is pasted into
  the workspace's last-focused pane (lib/panePaste.ts)

dashboard_runs stability:
- a pane's previous run is archived as <pane>@<started_at> instead of being
  overwritten by INSERT OR REPLACE
- a run is flagged abandoned only once its tmux session is gone, at boot and
  on the run-heal beat (panes outlive a server restart)

UI:
- sidebar: no footer, language or theme block; small collapse button in the
  brand corner; version + update check in the connection details modal, a
  status-bar dot while a release is out; language in Settings -> General
- one Switch component for every switch, the themed Checkbox for every
  checkbox (no native checkboxes)

Also: AI Tools catalog trimmed to 10 built-ins (custom-file prompt modes
tested through fixtures), and the workspace plans under docs/plans/ (the
multi-user server plan lives in the AgentHub-Server repo).

client/src/components/run/LaneConsolePane.tsx

@@ -86,10 +86,6 @@ export interface LaneConsolePaneProps {
   hiddenRunIds?: string[];
   /** Reports the run this pane shows (null on the setup form). */
   onHandleChange?: (runId: string | null) => void;
-  /** A session to resume in this pane, from the Workspace's Sessions tab. A new
-   *  `nonce` is a new request; it goes through the same path as a resume from
-   *  the run history, live-run fallback included. */
-  resumeRequest?: { sessionId: string; model: string | null; nonce: number } | null;
   /** A live run to show in this pane (a session picked in the sidebar). It
    *  attaches to that tmux session only — nothing is started or resumed. */
   attachRequest?: { runId: string; nonce: string } | null;
@@ -116,7 +112,6 @@ export function LaneConsolePane({
   slot = 0,
   hiddenRunIds,
   onHandleChange,
-  resumeRequest,
   attachRequest,
 }: LaneConsolePaneProps) {
   const { t } = useTranslation("run");
@@ -492,23 +487,6 @@ export function LaneConsolePane({
     [busy, refreshList, t, lanes, slot, onLaneCreated, onLaneIdChange, attachToRun]
   );
 
-  const resumeRef = useRef(onResumeFromHistory);
-  resumeRef.current = onResumeFromHistory;
-  useEffect(() => {
-    const lane = latest.current.lanes.find((l) => l.id === laneId);
-    if (!resumeRequest || !lane) return;
-    void resumeRef.current({
-      session_id: resumeRequest.sessionId,
-      cwd: lane.cwd,
-      tool: lane.tool,
-      model: resumeRequest.model,
-      permission_mode: null,
-      effort: null,
-    } as DashboardRunHistoryItem);
-    // Only a new request (nonce) resumes; a lane switch never replays one.
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [resumeRequest?.nonce]);
-
   const onViewFromHistory = useCallback(
     (item: DashboardRunHistoryItem) => {
       if (item.session_id) void onResumeFromHistory(item);

client/src/components/run/RunSetup.tsx

@@ -26,6 +26,7 @@
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
+import { Checkbox } from "../Checkbox";
 import { useEffect, useMemo, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
 import {
@@ -577,15 +578,13 @@ export function RunSetup(props: RunSetupProps) {
 
       {canBypass && (
         <div className="px-4 pb-3">
-          <label className="inline-flex items-center gap-2 text-[11.5px] text-status-danger cursor-pointer">
-            <input
-              type="checkbox"
-              checked={bypass}
-              onChange={(e) => setBypass(e.target.checked)}
-              className="accent-[rgb(var(--status-danger))]"
-            />
-            {t("fields.bypass")}
-          </label>
+          <Checkbox
+            tone="danger"
+            checked={bypass}
+            onChange={setBypass}
+            label={t("fields.bypass")}
+            labelClassName="text-[11.5px] text-status-danger"
+          />
           {bypass && (
             <div className="mt-2 rounded-md border border-status-danger/40 bg-status-danger/10 px-3 py-2 text-[11px] text-status-danger flex items-start gap-2">
               <ShieldAlert className="w-3.5 h-3.5 flex-shrink-0 mt-0.5" />

client/src/components/run/TerminalView.tsx

@@ -13,7 +13,9 @@
  * (`lib/terminalTheme.ts`), recoloured live without re-attaching.
  * An image dropped on it is saved on the server (`POST /api/run/drop-image`)
  * and its PATH pasted into the pane — what a local terminal does on a drop,
- * and how `claude` attaches an image.
+ * and how `claude` attaches an image. The pane also registers with
+ * `lib/panePaste.ts`, so a diff-line comment from the Changes panel can be
+ * pasted into whichever of the workspace's panes was focused last.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 import { useEffect, useMemo, useRef, useState, type DragEvent } from "react";
@@ -25,6 +27,7 @@ import "@xterm/xterm/css/xterm.css";
 import { useTheme } from "../../hooks/useTheme";
 import { terminalThemeFor } from "../../lib/terminalTheme";
 import { api } from "../../lib/api";
+import { notePaneFocus, registerPane } from "../../lib/panePaste";
 
 type DropState = "hint" | "uploading" | "failed" | "imagesOnly";
 const hasFiles = (e: DragEvent) => Array.from(e.dataTransfer.types).includes("Files");
@@ -291,6 +294,16 @@ export function TerminalView({ runId, wsBaseUrl, onExit }: TerminalViewProps) {
     if (termRef.current) termRef.current.options.theme = palette;
   }, [palette]);
 
+  // Other parts of the page (a diff-line comment) paste into this pane.
+  useEffect(
+    () =>
+      registerPane(runId, (text) => {
+        termRef.current?.paste(text);
+        termRef.current?.focus();
+      }),
+    [runId]
+  );
+
   return (
     <div
       className="relative h-full w-full"
@@ -311,6 +324,7 @@ export function TerminalView({ runId, wsBaseUrl, onExit }: TerminalViewProps) {
         if (dragDepth.current === 0) setDrop((d) => (d === "hint" ? null : d));
       }}
       onDrop={(e) => void onDrop(e)}
+      onFocus={() => notePaneFocus(runId)}
     >
       <div
         ref={containerRef}

client/src/components/run/__tests__/LaneConsolePane.test.tsx

@@ -484,49 +484,6 @@ describe("LaneConsolePane", () => {
     });
   });
 
-  it("resumes a session handed over by the Sessions tab, once per request", async () => {
-    (api.lanes.action as ReturnType<typeof vi.fn>).mockResolvedValue({ run_id: "agenthub-lane-1" });
-    (api.run.get as ReturnType<typeof vi.fn>).mockResolvedValue({
-      id: "agenthub-lane-1",
-      laneId: 1,
-      status: "running",
-      cwd: "/workspace/a",
-      model: null,
-      permissionMode: null,
-      effort: null,
-      resumeSessionId: "s-1",
-      sessionId: null,
-      startedAt: null,
-      promptPreview: null,
-    });
-    const request = { sessionId: "s-1", model: "claude-opus-5-5", nonce: 1 };
-    const { rerender } = render(
-      <MemoryRouter>
-        <LaneConsolePane {...baseProps()} resumeRequest={request} />
-      </MemoryRouter>
-    );
-    await waitFor(() =>
-      expect(api.lanes.action).toHaveBeenCalledWith(
-        1,
-        "start",
-        expect.objectContaining({
-          slot: 0,
-          prompt: "",
-          resumeSessionId: "s-1",
-          model: "claude-opus-5-5",
-        })
-      )
-    );
-    // A re-render with the same request is not a second resume.
-    rerender(
-      <MemoryRouter>
-        <LaneConsolePane {...baseProps()} resumeRequest={{ ...request }} />
-      </MemoryRouter>
-    );
-    await screen.findByTestId("terminal-view");
-    expect(api.lanes.action).toHaveBeenCalledTimes(1);
-  });
-
   it("attaches to a run picked in the sidebar without starting or resuming anything", async () => {
     vi.mocked(api.run.get).mockResolvedValue({
       id: "agenthub-lane-1-2",