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/git/pr-hint.ts

@@ -0,0 +1,57 @@
+export interface PrHint {
+  url: string;
+  number: number;
+  state: "open" | "merged" | "closed";
+  checks?: Array<{ name: string; status: string; url: string | null }>;
+  checksStatus?: "none" | "pending" | "success" | "failure";
+  reviewDecision?: "approved" | "changes_requested" | "pending" | null;
+}
+
+interface PrStatusLike {
+  url: string;
+  state: string;
+  isMerged: boolean;
+  checks?: Array<{ name: string; status: string; url: string | null }>;
+  checksStatus?: string;
+  reviewDecision?: string | null;
+}
+
+function parsePullRequestNumber(url: string): number | null {
+  try {
+    const pathname = new URL(url).pathname;
+    const match = pathname.match(/\/pull\/(\d+)(?:\/|$)/);
+    if (!match) {
+      return null;
+    }
+
+    const number = Number.parseInt(match[1], 10);
+    return Number.isFinite(number) ? number : null;
+  } catch {
+    return null;
+  }
+}
+
+export function selectPrHintFromStatus(status: PrStatusLike | null | undefined): PrHint | null {
+  if (!status?.url) {
+    return null;
+  }
+
+  const number = parsePullRequestNumber(status.url);
+  if (number === null) {
+    return null;
+  }
+
+  let state: "merged" | "open" | "closed";
+  if (status.isMerged || status.state === "merged") state = "merged";
+  else if (status.state === "open") state = "open";
+  else state = "closed";
+
+  return {
+    url: status.url,
+    number,
+    state,
+    checks: status.checks,
+    checksStatus: status.checksStatus as PrHint["checksStatus"],
+    reviewDecision: status.reviewDecision as PrHint["reviewDecision"],
+  };
+}

packages/app/src/git/use-pr-status-query.ts

@@ -3,6 +3,7 @@ import { useTranslation } from "react-i18next";
 import { useHostRuntimeClient, useHostRuntimeIsConnected } from "@/runtime/host-runtime";
 import type { CheckoutPrStatusResponse } from "@getpaseo/protocol/messages";
 import { checkoutPrStatusQueryKey } from "@/git/query-keys";
+import { selectPrHintFromStatus, type PrHint } from "@/git/pr-hint";
 
 interface UseCheckoutPrStatusQueryOptions {
   serverId: string;
@@ -11,64 +12,7 @@ interface UseCheckoutPrStatusQueryOptions {
 }
 
 export type CheckoutPrStatusPayload = CheckoutPrStatusResponse["payload"];
-
-export interface PrHint {
-  url: string;
-  number: number;
-  state: "open" | "merged" | "closed";
-  checks?: Array<{ name: string; status: string; url: string | null }>;
-  checksStatus?: "none" | "pending" | "success" | "failure";
-  reviewDecision?: "approved" | "changes_requested" | "pending" | null;
-}
-
-interface PrStatusLike {
-  url: string;
-  state: string;
-  isMerged: boolean;
-  checks?: Array<{ name: string; status: string; url: string | null }>;
-  checksStatus?: string;
-  reviewDecision?: string | null;
-}
-
-function parsePullRequestNumber(url: string): number | null {
-  try {
-    const pathname = new URL(url).pathname;
-    const match = pathname.match(/\/pull\/(\d+)(?:\/|$)/);
-    if (!match) {
-      return null;
-    }
-
-    const number = Number.parseInt(match[1], 10);
-    return Number.isFinite(number) ? number : null;
-  } catch {
-    return null;
-  }
-}
-
-export function selectPrHintFromStatus(status: PrStatusLike | null | undefined): PrHint | null {
-  if (!status?.url) {
-    return null;
-  }
-
-  const number = parsePullRequestNumber(status.url);
-  if (number === null) {
-    return null;
-  }
-
-  let state: "merged" | "open" | "closed";
-  if (status.isMerged || status.state === "merged") state = "merged";
-  else if (status.state === "open") state = "open";
-  else state = "closed";
-
-  return {
-    url: status.url,
-    number,
-    state,
-    checks: status.checks,
-    checksStatus: status.checksStatus as PrHint["checksStatus"],
-    reviewDecision: status.reviewDecision as PrHint["reviewDecision"],
-  };
-}
+export { selectPrHintFromStatus, type PrHint } from "@/git/pr-hint";
 
 function selectWorkspacePrHint(payload: CheckoutPrStatusPayload): PrHint | null {
   return selectPrHintFromStatus(payload.status);