Add pinnable new-tab targets to the tab row and sidebar

Any new-tab target (new agent, terminal, browser, or a terminal profile)
can be pinned as a quick-launch button. Pins are global client app state
(persisted), not daemon config, so the same set shows on every workspace;
profile pins resolve per host and are dropped where that profile is absent.

The sidebar mirror launches via a navigate-then-launch intent store rather
than calling the create handlers directly: terminal creation only works in
the mounted/focused workspace, so the sidebar requests the launch and the
workspace screen consumes it on focus.

packages/app/src/components/sidebar-workspace-list.tsx

@@ -70,6 +70,11 @@ import {
   type SidebarWorkspaceEntry,
 } from "@/hooks/use-sidebar-workspaces-list";
 import { useSidebarOrderStore } from "@/stores/sidebar-order-store";
+import { buildWorkspaceTabPersistenceKey } from "@/stores/workspace-tabs-store/state";
+import { usePinnedLaunchers } from "@/workspace-pins/launch";
+import { useLaunchIntentStore } from "@/workspace-pins/launch-intent-store";
+import { PinnedTargetsRow } from "@/workspace-pins/pinned-targets-row";
+import type { PinnedTabTarget } from "@/workspace-pins/target";
 import { useShowShortcutBadges } from "@/hooks/use-show-shortcut-badges";
 import { ContextMenuTrigger, useContextMenu } from "@/components/ui/context-menu";
 import {
@@ -662,15 +667,40 @@ function WorkspaceRowRightGroup({
   onRename?: () => void;
 }) {
   const { t } = useTranslation();
+  const isMobileBreakpoint = useIsCompactFormFactor();
   const showShortcut = showShortcutBadge && shortcutNumber !== null;
   const showKebab = Boolean(onArchive && (isHovered || isTouchPlatform));
   const showKebabInSlot = showKebab && !showShortcut;
   const shouldRenderActionSlot = Boolean(onArchive || workspace.diffStat);
+  const showPinnedTargets = (isHovered || platformIsNative || isMobileBreakpoint) && !showShortcut;
+
+  const onLaunch = useCallback(
+    (target: PinnedTabTarget) => {
+      const workspaceKey = buildWorkspaceTabPersistenceKey({
+        serverId: workspace.serverId,
+        workspaceId: workspace.workspaceId,
+      });
+      if (!workspaceKey) return;
+      navigateToWorkspace(workspace.serverId, workspace.workspaceId);
+      useLaunchIntentStore.getState().request({ workspaceKey, target });
+    },
+    [workspace.serverId, workspace.workspaceId],
+  );
+  const launchers = usePinnedLaunchers({ serverId: workspace.serverId, onLaunch });
+
   return (
     <>
       {isCreating ? (
         <Text style={styles.workspaceCreatingText}>{t("sidebar.workspace.status.creating")}</Text>
       ) : null}
+      {launchers.length > 0 ? (
+        <View
+          style={showPinnedTargets ? undefined : styles.pinnedTargetsHidden}
+          pointerEvents={showPinnedTargets ? "auto" : "none"}
+        >
+          <PinnedTargetsRow launchers={launchers} testIdPrefix="sidebar-pinned-target" />
+        </View>
+      ) : null}
       {shouldRenderActionSlot ? (
         <SidebarWorkspaceTrailingActionSlot>
           <SidebarWorkspaceTrailingActionBase
@@ -2689,6 +2719,9 @@ const styles = StyleSheet.create((theme) => ({
     fontSize: theme.fontSize.xs,
     flexShrink: 0,
   },
+  pinnedTargetsHidden: {
+    opacity: 0,
+  },
   kebabButton: {
     padding: 2,
     borderRadius: 4,