feat: import existing CLI sessions from the home screen

Home screen now leads with action tiles (Add a project, Import session,
Setup providers, Pair device) instead of a single button, giving new
users a clear path in even before they've added a project.

Import session is the onboarding hook: the sheet now works without a
workspace context and lists recent sessions from every provider's native
history (Claude, Codex, OpenCode, Pi, ACP). Picking one imports the
agent and lands the user on its workspace.

To make that work end-to-end, the daemon upserts the imported agent's
cwd as a workspace so the sidebar surfaces it even when the user never
explicitly opened the folder.

Also adds a Home entry to cmd+K and a refresh button to the import
sheet header for explicit re-fetch.

packages/app/src/hooks/use-command-center.ts

@@ -10,7 +10,7 @@ import {
   clearCommandCenterFocusRestoreElement,
   takeCommandCenterFocusRestoreElement,
 } from "@/utils/command-center-focus-restore";
-import { buildSettingsRoute } from "@/utils/host-routes";
+import { buildHostOpenProjectRoute, buildSettingsRoute } from "@/utils/host-routes";
 import type { ShortcutKey } from "@/utils/format-shortcut";
 import { chordStringToShortcutKeys } from "@/keyboard/shortcut-string";
 import { getBindingIdForAction, getDefaultKeysForAction } from "@/keyboard/keyboard-shortcuts";
@@ -52,10 +52,10 @@ function sortAgents(left: AggregatedAgent, right: AggregatedAgent): number {
 interface CommandCenterActionDefinition {
   id: string;
   title: string;
-  icon?: "plus" | "settings";
+  icon?: "plus" | "settings" | "home";
   actionId?: string;
   keywords: string[];
-  routeKind: "settings" | "none";
+  routeKind: "settings" | "home" | "none";
 }
 
 const COMMAND_CENTER_ACTIONS: readonly CommandCenterActionDefinition[] = [
@@ -67,6 +67,13 @@ const COMMAND_CENTER_ACTIONS: readonly CommandCenterActionDefinition[] = [
     keywords: ["open", "project", "folder", "workspace", "repo"],
     routeKind: "none",
   },
+  {
+    id: "home",
+    title: "Home",
+    icon: "home",
+    keywords: ["home", "start", "import", "session", "pair", "device", "providers"],
+    routeKind: "home",
+  },
   {
     id: "settings",
     title: "Settings",
@@ -89,7 +96,7 @@ export interface CommandCenterActionItem {
   kind: "action";
   id: string;
   title: string;
-  icon?: "plus" | "settings";
+  icon?: "plus" | "settings" | "home";
   route?: Href;
   shortcutKeys?: ShortcutKey[][];
 }
@@ -155,21 +162,32 @@ export function useCommandCenter() {
     return buildSettingsRoute();
   }, []);
 
+  const homeRoute = useMemo<Href | undefined>(() => {
+    if (!routeActiveServerId) return undefined;
+    return buildHostOpenProjectRoute(routeActiveServerId) as Href;
+  }, [routeActiveServerId]);
+
   const actionItems = useMemo(() => {
     if (!open) {
       return EMPTY_ACTION_ITEMS;
     }
-    return COMMAND_CENTER_ACTIONS.filter((action) =>
-      matchesActionQuery(query, action),
-    ).map<CommandCenterActionItem>((action) => ({
-      kind: "action",
-      id: action.id,
-      title: action.title,
-      icon: action.icon,
-      route: action.routeKind === "settings" ? settingsRoute : undefined,
-      shortcutKeys: resolveActionShortcutKeys(action.actionId, overrides),
-    }));
-  }, [open, query, settingsRoute, overrides]);
+    return COMMAND_CENTER_ACTIONS.filter((action) => {
+      if (action.routeKind === "home" && !homeRoute) return false;
+      return matchesActionQuery(query, action);
+    }).map<CommandCenterActionItem>((action) => {
+      let route: Href | undefined;
+      if (action.routeKind === "settings") route = settingsRoute;
+      else if (action.routeKind === "home") route = homeRoute;
+      return {
+        kind: "action",
+        id: action.id,
+        title: action.title,
+        icon: action.icon,
+        route,
+        shortcutKeys: resolveActionShortcutKeys(action.actionId, overrides),
+      };
+    });
+  }, [open, query, settingsRoute, homeRoute, overrides]);
 
   const items = useMemo(() => {
     if (!open) {