Improve sidebar workspace readability and host identity (#2790)

* fix(app): align turn footer actions

Keep running-turn actions in the same position as completed-turn actions and use the shared small icon size for both copy and fork controls.

* feat(app): improve sidebar workspace identity

Make dense sidebar workspace rows easier to scan and let each device control how connected hosts are identified.

* fix(app): keep host badges readable

Use a compact display menu and keep identity color on the host icon so translated controls fit and badge text retains standard contrast.

* fix(app): announce selected sidebar badge mode

* fix(app): retain icon-only host names for screen readers

* fix(app): name hoisted workspace rows

* fix(app): retain host identity in workspace labels

* fix(app): retain workspace status in row labels

* fix(app): defer host appearance until identity resolves

* fix(app): serialize host appearance writes

* fix(app): serialize host registry writes

* fix(app): bound sidebar host badge labels

* test(app): match workspace status labels

* fix(app): consolidate sidebar identity behavior

* test(app): assert status grouping behavior

* fix(app): keep sidebar row actions accessible

* fix(app): stabilize optimistic message layout

packages/app/src/diagnostics/app-diagnostic-report.test.ts

@@ -6,11 +6,13 @@ import {
 } from "./app-diagnostic-report";
 import type { HostRuntimeSnapshot } from "@/runtime/host-runtime";
 import type { HostProfile } from "@/types/host-connection";
+import { defaultHostAppearance } from "@/hosts/appearance";
 
 function makeHost(): HostProfile {
   return {
     serverId: "srv-secret",
     label: "Secret host",
+    appearance: defaultHostAppearance(),
     lifecycle: {},
     preferredConnectionId: "direct:secret.example.test:6767",
     createdAt: "2026-06-25T00:00:00.000Z",