Merge sidebar workspaces across all connected hosts (#1538)

* Merge workspaces across all hosts in the sidebar

Replace per-host sidebar sections with a single merged project list.
Projects that exist on multiple hosts (matched by projectKey) are
collapsed into one row. Host identity is surfaced via:

- A status-only footer pill showing online/offline host counts
- Hover cards with a mandatory host row on every workspace entry
- Subtitles showing the host name when a project spans >1 host
- A host filter in the grouping dropdown (not a sidebar switcher)

Order and group-mode stores migrated from per-server to global keys
with zustand persist migrations. New-workspace screen now shows a
merged project list with a host selector combobox.

Key files:
- workspace-structure.ts: merge algorithm by projectKey
- sidebar-view-store.ts / sidebar-order-store.ts: global state
- sidebar-workspace-list.tsx: context-based subtitle injection
- new-workspace-screen.tsx: host selector in footer row

* Add host filtering to the merged sidebar

The sidebar now merges workspaces from every connected host, so a single
global "active host" no longer fits. Host selection becomes explicit per
action via a host chooser, and agent history pages across all hosts at
once. Removes the active-host / active-server-id model and the
all-agents-list hook that fed it.

* Fix rebase fallout: translate archive host error, update stale workspace-key test

archiveWorkspacesOptimistically used a raw "Host is not connected" string
that the i18n completeness test forbids; route it through i18n.t with the
existing hostDisconnected key. The selectors memoization test asserted
un-prefixed workspace keys, but merged-sidebar keys are serverId-prefixed.

* Fix sidebar review fallout

* Address sidebar review followups

* Fix sidebar workspace identity migration

* Address sidebar review followups

* Handle partial host history failures

* Fix merged sidebar project removal and E2E drift

* Restore history routes and project removal shape

* Remove sidebar host context plumbing

* Tighten sidebar status and host filter state

* Keep new workspace project selection host-compatible

* Migrate sidebar view storage

* Streamline host selection flows

* Update all-host history on archive

* Fix empty project sidebar action

Code regression: the main merge dropped the empty-project New workspace child row while keeping the empty project persistence contract. Restore the row using the project host target so the sidebar stays aligned with the no-host-selection model.

* Fix Japanese shortcut translation key

Stale-base integration: main added the Japanese locale after this branch added cycleAgentMode to the English shortcut help map. Merging main exposed the missing ja key in CI typecheck and resources.test.

* Fix Playwright speech teardown race

packages/app/src/components/ui/combobox.tsx

@@ -230,6 +230,7 @@ export interface ComboboxItemProps {
   disabled?: boolean;
   /** When true, bumps hover/pressed colors up one surface level (for items on elevated backgrounds). */
   elevated?: boolean;
+  interactiveFeedback?: boolean;
   onPress: () => void;
   testID?: string;
 }
@@ -244,6 +245,7 @@ export function ComboboxItem({
   active,
   disabled,
   elevated,
+  interactiveFeedback = true,
   onPress,
   testID,
 }: ComboboxItemProps): ReactElement {
@@ -269,12 +271,16 @@ export function ComboboxItem({
   const itemPressableStyle = useCallback(
     ({ pressed, hovered = false }: PressableStateCallbackType & { hovered?: boolean }) => [
       styles.comboboxItem,
-      hovered && (elevated ? styles.comboboxItemHoveredElevated : styles.comboboxItemHovered),
-      pressed && (elevated ? styles.comboboxItemPressedElevated : styles.comboboxItemPressed),
-      active && styles.comboboxItemActive,
+      interactiveFeedback &&
+        hovered &&
+        (elevated ? styles.comboboxItemHoveredElevated : styles.comboboxItemHovered),
+      interactiveFeedback &&
+        pressed &&
+        (elevated ? styles.comboboxItemPressedElevated : styles.comboboxItemPressed),
+      interactiveFeedback && active && styles.comboboxItemActive,
       disabled && styles.comboboxItemDisabled,
     ],
-    [elevated, active, disabled],
+    [elevated, active, disabled, interactiveFeedback],
   );
 
   const itemContentStyle = useMemo(

packages/app/src/components/ui/dropdown-menu.tsx

@@ -992,5 +992,6 @@ const styles = StyleSheet.create((theme) => ({
   },
   itemContent: {
     flexShrink: 1,
+    minWidth: 0,
   },
 }));