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/components/diff-stat.tsx

@@ -36,11 +36,11 @@ const styles = StyleSheet.create((theme) => ({
   additions: {
     fontSize: theme.fontSize.xs,
     fontWeight: theme.fontWeight.normal,
-    color: theme.colors.diffAddition,
+    color: theme.colors.diffStatAddition,
   },
   deletions: {
     fontSize: theme.fontSize.xs,
     fontWeight: theme.fontWeight.normal,
-    color: theme.colors.diffDeletion,
+    color: theme.colors.diffStatDeletion,
   },
 }));